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Monday, February 1, 2021

2010 Cadillac CTS Sedan AWD V6-3.6L Page 51

P2149 - P2187

2010 Cadillac Truck SRX AWD V6-3.0L Page 854

瀚慖f less than the specified range, test the 5 V reference circuit for a short to ground or an open/high resistance. If the circuit tests normal,

replace the K19 suspension control module.

瀚慖f greater than the specified range, test the 5 V reference circuit for a short to voltage. If the circuit tests normal, replace the K19

suspension control module.

5. Verify the scan tool Vertical Body Acceleration parameter is less than -3 m/s(2).

瀚慖f greater than the specified value, test the signal circuit for a short to ground. If the circuit tests normal, replace the K19 suspension

control module.

6. Install a fused jumper wire between the signal circuit terminal 2 and the low reference circuit terminal 3.

7. Verify the scan tool Vertical Body Acceleration parameter is greater than 3 m/s(2).

瀚慖f less than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit tests normal, replace

the K19 suspension control module.

8. If all circuits test normal, replace the B162 vertical body acceleration sensor.

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Electronic Suspension Front Vertical Accelerometer Replacement - Upper (See: Sensors and Switches/Sensors and Switches - Steering and

Suspension/Sensors and Switches - Suspension/Acceleration Sensor/Service and Repair/Electronic Suspension Front Vertical Accelerometer

Replacement - Upper)

* Electronic Suspension Rear Position Sensor Replacement (See: Sensors and Switches/Sensors and Switches - Steering and

Suspension/Sensors and Switches - Suspension/Ride Height Sensor/Service and Repair)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for suspension control module replacement, setup

and programming

C0670

DTC C0670 or C0675

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC C0670 02

- Left Front Acceleration or Position Sensor Circuit Short to Ground

DTC C0670 05

- Left Front Acceleration or Position Sensor Circuit High Voltage/Open

DTC C0670 0A

- Left Front Acceleration or Position Sensor Circuit Too Slow Transitions

DTC C0675 02

- Right Front Acceleration or Position Sensor Circuit Short to Ground

DTC C0675 05

- Right Front Acceleration or Position Sensor Circuit High Voltage/Open

DTC C0675 0A

- Right Front Acceleration or Position Sensor Circuit Too Slow Transitions

Diagnostic Fault Information

2021 Cadillac Escalade Review, Pricing, and Specs - Car and Driver more ...

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1052

(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. Observe the DTC information with a scan tool. DTC P0685 or P1682 should not set.

瀚慖f a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble

Code (DTC) List - Vehicle).

2. Engine operating, observe the DTC information with a scan tool. DTC P1248, P1249, P124A, P124B, P124C, or P124D should not set.

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

4. Ignition ON, observe the scan tool Cylinder 1-6 Injector Control Circuit Status parameters. Verify the Injector Control Circuit Status

parameters display OK.

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 OFF, disconnect the appropriate multi-way harness connector X109 or X110, at the rear of the intake manifold.

2. Ignition ON, observe the appropriate scan tool Cylinder 1-6 Injector Control Circuit Status. The parameter should display Open.

瀚慖f not the specified value, test the appropriate high voltage supply circuit, ECM side, for a short to ground or the appropriate high voltage

control circuit, ECM side, for a short to voltage. If the circuits test normal, replace the K20 ECM.

3. Ignition ON, connect a test lamp between the appropriate high voltage supply circuit and the high voltage control circuit. The Injector

Control Circuit Status should transition from Open to OK.

瀚慖f not the specified value, test for the following conditions in the ECM side of the harness:

* An open/high resistance in the high voltage supply circuit

* An open/high resistance in the high voltage control circuit

* A short to ground in the high voltage control circuit

* A short to voltage in the high voltage supply circuit

瀚慖f the circuits test normal, replace the K20 ECM.

Note: Testing for the following steps is performed on the fuel injector side of the multi-way harness connector. It may be necessary to

remove the intake manifold to isolate the condition.

4. Ignition OFF, measure the resistance between the appropriate high voltage supply circuit and ground. The DMM should display OL ohm.

瀚慖f less than the specified range, test the high voltage supply circuit and the high voltage control circuit for a short to ground. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).

5. Test for 2-3 ohm between the appropriate high voltage supply circuit and high voltage control circuit.

瀚慖f less than the specified range, test for a short between the high voltage supply circuit and high voltage control circuit. If the

circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).

瀚慖f greater than the specified range, test the high voltage supply circuit and high voltage control circuit for an open/high resistance. If the

2010 Cadillac Truck SRX AWD V6-3.0L Page 1074

Repair Instructions

Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.

* Camshaft Position Actuator Replacement - Bank 1 (LF1) (See: Engine, Cooling and Exhaust/Engine/Camshaft, Lifters and Push

Rods/Camshaft/Service and Repair/Camshaft Position Actuator Replacement - Bank 1)

* Camshaft Position Actuator Replacement - Bank 2 (LF1) (See: Engine, Cooling and Exhaust/Engine/Camshaft, Lifters and Push

Rods/Camshaft/Service and Repair/Camshaft Position Actuator Replacement - Bank 2)

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 1 (Right Side) Intake)

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust)

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 2 (Left Side) Intake)

* Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust (See: Engine, Cooling and

Exhaust/Engine/Actuators and Solenoids - Engine/Variable Valve Timing Solenoid/Service and Repair/Camshaft Position Actuator Solenoid

Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust)

* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, programming, and setup

P0056

DTC P0030, P0036, P0050, P0053, P0054, P0056, P0059, P0060, P0135, P0141, P0155, or P0161 (LF1)

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic System

Check - Vehicle) prior to using this diagnostic procedure.

* Review Strategy Based Diagnosis (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Strategy Based Diagnosis) for an

overview of the diagnostic approach.

* Diagnostic Procedure Instructions (See: Testing and Inspection/Initial Inspection and Diagnostic Overview/Diagnostic Procedure

Instructions) provides an overview of each diagnostic category.

DTC Descriptors

DTC P0030

- HO2S Heater Control Circuit Bank 1 Sensor 1

DTC P0036

- HO2S Heater Control Circuit Bank 1 Sensor 2

DTC P0050

- HO2S Heater Control Circuit Bank 2 Sensor 1

DTC P0053

- HO2S Heater Resistance Bank 1 Sensor 1

DTC P0054

- HO2S Heater Resistance Bank 1 Sensor 2

DTC P0056

- HO2S Heater Control Circuit Bank 2 Sensor 2

DTC P0059

- HO2S Heater Resistance Bank 2 Sensor 1

DTC P0060

- HO2S Heater Resistance Bank 2 Sensor 2

DTC P0135

- HO2S Heater Performance Bank 1 Sensor 1

DTC P0141

- HO2S Heater Performance Bank 1 Sensor 2

DTC P0155

- HO2S Heater Performance Bank 2 Sensor 1

2010 Cadillac CTS Sedan AWD V6-3.6L Page 1018

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

Special Tools

J 35616 Connector Test Adapter Kit

Circuit/System Verification

1. Engine idling, DTC P0111, P0112, or P0113 should not set.

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

1. Ignition OFF, disconnect the harness connector at the B75B MAF/IAT sensor.

2. Remove the fuse that supplies B+ to circuit terminal 56-X2 of the ECM.

Caution: Do NOT use a test lamp to test the continuity of the circuit. Damage to the control module may occur due to excessive current

draw.

3. Test for less than 5 ohm between the low reference circuit terminal E and ground.

瀚慖f greater than the specified range, test the low reference circuit for an open/high resistance, or for a short to voltage. If the

circuit/connections test normal, replace the K20 ECM.

4. Install the fuse that supplies B+ to circuit terminal 56-X2 of the K20 ECM.

5. Ignition ON, verify that the scan tool IAT sensor parameter is at -40掳C (-40掳F).

瀚慖f warmer than the specified value, test the signal circuit terminal D for a short to ground. If the circuit/connections test normal, replace

the K20 ECM.

Note: If the fuse in the jumper wire opens, the signal circuit is shorted to a voltage and the sensor may be damaged.

6. Ignition ON, install a 3 A fused jumper wire between the signal circuit terminal D and ground circuit terminal C. Verify the IAT sensor

parameter is warmer than 134掳C (274掳F).

瀚慖f colder than the specified value, test the signal circuit for a short to voltage or an open/high resistance. If the circuit/connections test

normal, replace the K20 ECM.

7. If all circuits/connections test normal, test or replace the B75B MAF/IAT sensor.

Component Testing

1. Ignition OFF, disconnect the harness connector at the B75B MAF/IAT sensor.

Note: A thermometer can be used to test the sensor off the vehicle.

2. Test the B66 IAT sensor by varying the sensor temperature while monitoring the sensor resistance. Compare the readings with the

2010 Cadillac Truck SRX AWD V6-3.0L Page 803

DTC Descriptor

DTC C0280 54

- Stability System Active Too Long High Temperature

Circuit/System Description

The solenoid valves are integral parts of the brake pressure modulator valve assembly. The brake pressure modulator valve assembly contains an

isolation solenoid valve and a dump solenoid valve for each wheel and a traction control/stability control supply solenoid valve and isolation

solenoid valve for each brake circuit. The solenoid valves are not engaged during normal system operation. When the ABS, traction control or

stability control operation is required the electronic brake control module (EBCM) turns the required solenoid valves ON.

Conditions for Running the DTC

Ignition ON

Conditions for Setting the DTC

Stability control is active for more than 15 s.

Action Taken When the DTC Sets

* The EBCM disables the stability control for the duration of the ignition cycle.

* The traction control/stability control-active indicator turns ON.

Conditions for Clearing the DTC

The condition for setting the DTC is no longer present.

Diagnostic Aids

DTC can set because of extended operation of ABS, traction control or stability control.

Reference Information

Schematic Reference

Antilock Brake System Schematics (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/Diagrams/Electrical Diagrams)

Connector End View Reference

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

Description and Operation

ABS Description and Operation (See: Brakes and Traction Control/Antilock Brakes / Traction Control Systems/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)

Scan Tool Reference

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

Circuit/System Testing

1. Ignition ON, verify that DTC C0186, C0196, C019B, or C0710 is not set as a present DTC.

瀚慖f any listed DTC is present, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code

Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) to diagnose that DTC prior to this diagnostic.

2. Ignition OFF, inspect the B99 Steering Wheel Angle Sensor and B119 Multi-axis Acceleration Sensor for correct installation.

瀚慖f loose or incorrect installation is diagnosed, correct the installation of the component.