2010 Cadillac CTS Sedan AWD V6-3.6L Page 1167

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1167

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1092

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1092

* DTC P0201, P0202, P0203, P0204, P0205, P0206 P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276,

P0277, P2146, P2149, P2152, P2155, P216A, or P216D is not set.

* The ignition voltage is greater than 10 volts.

* The engine speed is greater than 240 RPM.

* The air flow into the engine is greater than 220 grams.

* The HO2S 1 heater duty cycle is greater than 90 percent for greater than 5 seconds.

* The evaporative emissions system (EVAP) is not performing an intrusive test.

* The ECM is not commanding the air/fuel mixture lean.

* DTC P0131 and P0151 run continuously once the conditions above exist for greater than 5 seconds.

Condition 2

* DTC P0116, P0117, P0118, P0119, P0201, P0202, P0203, P0204, P0205, P0206 P0261, P0262, P0264, P0265, P0267, P0268, P0270,

P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D is not set.

* The ignition voltage is greater than 10 volts.

* The engine speed is greater than 240 RPM.

* The conditions for a cold start are present.

* The HO2S 1 heater duty cycle is greater than 90 percent.

* DTC P0131 and P0151 run continuously once the conditions above exist for greater than 5 seconds.

Conditions for Setting the DTC

Condition 1

The ECM detects that an HO2S 1 signal voltage is less than 60 mV while the corresponding HO2S 2 voltage is greater than 500 mV.

Condition 2

The ECM detects that an HO2S 1 signal voltage is less than 60 mV after a cold start.

Action Taken when the DTC Sets

DTCs P0131 and P0151 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P0131 and P0151 are Type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Engine idling, observe the appropriate scan tool HO2S 1 voltage parameter. The voltage should fluctuate above and below the range of

350-550 mV.

2. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1162

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1162

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1157

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1157

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1152

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1152

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1885

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1885

P0261, P0264, P0267, P0270, P0273, or P0276

The ECM detects the injector high voltage control circuit is shorted to ground for greater than 4 seconds or for a cumulative of 30 seconds.

P0262, P0265, P0268, P0271, P0274, or P0277

The ECM detects the injector high voltage control circuit is shorted to voltage for greater than 4 seconds or for a cumulative of 30 seconds.

P2146, P2149, P2152, P2155, P216A, or P216D

The ECM detects the injector high voltage supply circuit is shorted to ground or shorted to a voltage for greater than 4 seconds or for a cumulative

of 30 seconds.

Action Taken When the DTC Sets

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1172

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1172

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1278

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1278

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1258

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1258

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1149

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1149

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277

are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277

are Type B DTCs.

Diagnostic Aids

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (LAU) (See:

Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection/Fuel Injector Solenoid Coil Test)Fuel Injector

Solenoid Coil Test (LF1, LFW) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection/Fuel

Injector Solenoid Coil Test).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the circuit status for

the component with a scan tool. The circuit status parameter changes from OK or Not Ran to Fault if there is a condition with the circuit or a

connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)Fuel System

Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the scan tool Cylinder 1-6 Current Misfire Counter. The Cylinder 1-6 Current Misfire Counters should not increment.

2. Engine operating, observe the scan tool DTC information. DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265,

P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277 should not set.

3. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that are captured in the Freeze Frame/Failure Records Data List.

Circuit/System Testing

1. Ignition OFF, disconnect the fuel injector multi-way harness connector X145.

Note: Testing for steps 2 through 4 is performed on the ECM side of the multi-way harness connector.

2. Ignition ON, connect a test lamp between each ignition circuit terminal 1/2 and ground. The test lamp should illuminate at each ignition

circuit.

瀚慖f the test lamp does not illuminate, test the ignition circuits for a short to ground, or an open/high resistance. If the circuits test normal

and the ignition circuit fuse is open, test or replace the appropriate Q17 fuel injector.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1927

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1927

P0204, P0205, P0206, P0221, P0222, P0223, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0300, P0301, P0302,

P0303, P0304, P0305, P0306, P0335, P0336, P0338, P0443, P0458, P0459, P0461, P0462, P0463, P2068 P2088, P2089, P2090, P2091,

P2092, P2093, P2094, P2095 P2146, P2149, P2152, P2155, P216A, and P216D must run and pass.

* The engine speed is between 519-1,001 RPM.

* The engine load is between 0-24 %.

* The throttle angle is less than 100 %.

* The cold start fuel control is not active.

* The Closed Loop fuel control is enabled.

* The engine is not in decel fuel cut-off.

* The engine coolant temperature (ECT) is warmer than 60掳C (140掳F).

* The intake air temperature (IAT) is colder than 61掳C (142掳F).

* The calculated amount of fuel metered into the engine is greater than 700 g.

* DTCs P2188 and P2190 run continuously when the above conditions are met for approximately 300 s, after Closed Loop fuel control is

enabled.

Conditions for Setting the DTC

P2178 or P2180

The Long Term Fuel Trim Cruise/Accel is less than -22 % for 4 s or for a cumulative of 30 s.

P2188 or P2190

The Long Term Fuel Trim Idle/Decel is less than -6 % for 4 s or for a cumulative of 30 s.

Action Taken When the DTC Sets

DTCs P2178, P2180, P2188, and P2190 are Type B DTCs.

Conditions for Clearing the MIL/DTC

DTCs P2178, P2180, P2188, and P2190 are Type B DTCs.

Diagnostic Aids

* An HO2S will not cause this DTC to set without the occurrence of circuit related HO2S DTCs. Do not replace an HO2S to address this DTC.

* Observing the LT FT Bn 1 and Bn 2 parameters, while driving the vehicle can determine whether the rich condition is effecting only one

bank , or is common to both banks of the engine.

* A fuel system delivery condition causes this DTC to set. Thoroughly inspect all items that cause a rich condition. Refer to Fuel System

Diagnosis (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General

Diagnostics/Fuel System Diagnosis).

* Review the Freeze Frame/Failure Records with a scan tool.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the DTC information with a scan tool. DTC P2178, P2180, P2188, or P2190 should not be set.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1213

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1213

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277

are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277

are Type B DTCs.

Diagnostic Aids

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (LAU) (See:

Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection/Fuel Injector Solenoid Coil Test)Fuel Injector

Solenoid Coil Test (LF1, LFW) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection/Fuel

Injector Solenoid Coil Test).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the circuit status for

the component with a scan tool. The circuit status parameter changes from OK or Not Ran to Fault if there is a condition with the circuit or a

connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Description and Operation

Fuel System Description (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)Fuel System

Description (LAU or LY7) (See: Powertrain Management/Fuel Delivery and Air Induction/Description and Operation)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Observe the scan tool Cylinder 1-6 Current Misfire Counter. The Cylinder 1-6 Current Misfire Counters should not increment.

2. Engine operating, observe the scan tool DTC information. DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265,

P0267, P0268, P0270, P0271, P0273, P0274, P0276, and P0277 should not set.

3. Operate the vehicle within the conditions for running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that are captured in the Freeze Frame/Failure Records Data List.

Circuit/System Testing

1. Ignition OFF, disconnect the fuel injector multi-way harness connector X145.

Note: Testing for steps 2 through 4 is performed on the ECM side of the multi-way harness connector.

2. Ignition ON, connect a test lamp between each ignition circuit terminal 1/2 and ground. The test lamp should illuminate at each ignition

circuit.

瀚慖f the test lamp does not illuminate, test the ignition circuits for a short to ground, or an open/high resistance. If the circuits test normal

and the ignition circuit fuse is open, test or replace the appropriate Q17 fuel injector.

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1273

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1273

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1243

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1243

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1263

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1263

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1101

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1101

* DTC P0201, P0202, P0203, P0204, P0205, P0206 P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, or

P0277 is not set.

* The ignition voltage is greater than 10 volts.

* The engine is operating.

* The HO2S 1 heater duty cycle is greater than 70 percent for greater than 8 seconds.

* DTC P0132 runs continuously once the conditions above exist for greater than 5 seconds.

DTC P0134

* DTC P0131, P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274,

P0276, or P0277 is not set.

* The ignition voltage is greater than 10 volts.

* The engine is operating.

* The HO2S 2 is at operating temperature.

* The HO2S 1 heater duty cycle is greater than 70 percent for greater than 8 seconds.

OR

* The HO2S 1 heater duty cycle is greater than 68 percent and the calculated exhaust temperature is greater than 600掳C (1112掳F) for more than

30 seconds.

* The air flow into the engine has exceeded 10 grams.

* DTCs P0134 runs continuously once the conditions above exist for greater than 5 seconds.

Conditions for Setting the DTC

DTC P0131 - Condition 1

The ECM detects that the HO2S 1 signal voltage is less than 60 mV while the corresponding HO2S 2 voltage is greater than 500 mV.

DTC P0131 - Condition 2

The ECM detects that the HO2S 1 signal voltage is less than 60 mV after a cold start with the engine coolant temperature (ECT) less than 40掳C

(104掳F).

DTC P0132

The ECM detects that the HO2S 1 signal voltage is greater than 1,150 mV.

DTC P0134

DTC P0134 sets if any of the following conditions exist:

* An HO2S 1 signal voltage is between 400-600 mV, or 400-550 mV when the calculated exhaust temperature is greater than 800掳C (1,472掳F)

* The calculated internal resistance of a HO2S 1 is greater than 20,000 ohm when the calculated exhaust temperature is greater than 600掳C

(1112掳F).

* A corresponding HO2S 1 and HO2S 2 are greater than 200 mV during a decel fuel cut-off greater than 3 seconds.

Action Taken when the DTC Sets

DTC P0131, P0132, and P0134 are Type B DTCs

Conditions for Clearing the MIL/DTC

DTC P0131, P0132, and P0134 are Type B DTCs

Reference Information

Schematic Reference

Engine Controls Schematics (LAU) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit

Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic

Procedures/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General

Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring

Repairs/Wiring Repairs)

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1238

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1238

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1268

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1268

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1908

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1908

P0261, P0264, P0267, P0270, P0273, or P0276

The ECM detects the injector high voltage control circuit is shorted to ground for greater than 4 seconds or for a cumulative of 30 seconds.

P0262, P0265, P0268, P0271, P0274, or P0277

The ECM detects the injector high voltage control circuit is shorted to voltage for greater than 4 seconds or for a cumulative of 30 seconds.

P2146, P2149, P2152, P2155, P216A, or P216D

The ECM detects the injector high voltage supply circuit is shorted to ground or shorted to a voltage for greater than 4 seconds or for a cumulative

of 30 seconds.

Action Taken When the DTC Sets

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1875

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1875

DTCs P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264, P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277,

P2146, P2149, P2152, P2155, P216A, and P216D are Type B DTCs.

Diagnostic Aids

* The high voltage supply circuits of injectors 2 and 5, and injectors 3 and 6, are paired together with a dual high side driver in the controller.

A short to ground, or a short to voltage, on one of the paired circuits will set a DTC for the companion injector. The ECM will also disable

the high side driver for the affected injectors.

* The high voltage supply circuits of injectors 1 and 4 are not paired together in the controller.

* Performing the fuel injector coil test may help isolate an intermittent condition. Refer to Fuel Injector Solenoid Coil Test (w/LLT) (See:

Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector

Solenoid Coil Test)Fuel Injector Solenoid Coil Test (w/LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel

Injector/Testing and Inspection).

* If the condition is intermittent, move the related harnesses and connectors, with the engine operating, while monitoring the scan tool Injector

Control Circuit Test Status parameters. An Injector Control Circuit Test Status parameter will change from OK or Not Run to Fault if there is

a condition with the circuit or a connection.

Reference Information

Schematic Reference

Engine Controls Schematics (LLT) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)Engine Controls Schematics

(LF1) (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

Component Connector End Views (See: Diagrams/Connector Views)

Description and Operation

Fuel System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Fuel System Description)

Electrical Information Reference

* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit Testing/Circuit Testing)

* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Connector Repairs/Connector Repairs)

* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/Circuit

Testing/Testing for Intermittent Conditions and Poor Connections)

* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/Wiring Repairs/Wiring Repairs)

DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code

(DTC) Type Definitions)

Scan Tool Reference

Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information

Circuit/System Verification

1. Ignition ON, observe the DTC information. DTC P062B should not set.

瀚慖f DTC P062B failed this ignition, refer to DTC P062B (w/LLT) (See: P Code Charts/P062B).

2. Observe the scan tool Current Misfire Counter parameters. The Current Misfire Counters should not increment.

3. Engine operating, observe the appropriate scan tool Injector Control Circuit Test Status parameters. Verify the Injector Control Circuit Test

Status parameters display OK or Not Run.

4. Engine operating, observe the DTC information with a scan tool. DTC P0201, P0202, P0203, P0204, P0205, P0206, P0261, P0262, P0264,

P0265, P0267, P0268, P0270, P0271, P0273, P0274, P0276, P0277, P2146, P2149, P2152, P2155, P216A, or P216D should not set.

5. Operate the vehicle within the Conditions for Running the DTC to verify the DTC does not reset. You may also operate the vehicle within the

conditions that you observed from the Freeze Frame/Failure Records data.

Circuit/System Testing

1. Ignition ON, clear the scan tool DTC information.

2. Ignition OFF, disconnect the appropriate multi-way harness connector X116 or X117, at the rear of the intake manifold.

Note: Testing for steps 3 through 12 is performed on the ECM side of the multi-way harness connector.

3. Connect a test lamp between ground and the high voltage supply circuit terminal of the appropriate injector listed below.

* Fuel Injector 1 terminal 8 X117

* Fuel Injector 2 terminal 2 X116