2010 Cadillac CTS Sedan AWD V6-3.6L Page 798

2010 Cadillac CTS Sedan AWD V6-3.6L Page 798

* DTCs P000A, P000B, P000C, P000D, P0011, P0014, P0021, and P0024 run continuously once the above conditions are met for greater than

600 seconds.

Conditions for Setting the DTC

* The ECM detects the difference between the desired camshaft position angle and the actual camshaft position angle is greater than 7-8

degrees.

OR

* The ECM detects a slow response, a deviation greater than 1.5 degrees in time greater than 2 seconds, for the actual camshaft position angle

to match the desired position angle during the test.

* Either condition exists for greater than 1 second or a cumulative of 10 seconds.

Action Taken When the DTC Sets

DTCs P000A, P000B, P000C, P000D, P0011, P0014, P0021, and P0024 are type B DTCs.

Conditions for Clearing the DTC

DTCs P000A, P000B, P000C, P000D, P0011, P0014, P0021, and P0024 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)

Description and Operation

Camshaft Actuator System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Camshaft

Actuator 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

Special Tools

* J 35616-200 - Test Lamp Kit

* For equivalent regional tools, refer to Special Tools (See: Powertrain Management/Computers and Control Systems/Tools and Equipment).

Diagnostic Aids

* The engine oil condition has a major impact on the camshaft actuator system.

* A low oil level condition may set this DTC. The engine may require an oil change. Inquire with the customer when the last oil change was

performed. You may also monitor the scan tool Engine Oil Life parameter. Advise the customer an oil change may be required.

* Inspect the engine for any recent engine mechanical repairs. An incorrectly installed camshaft, camshaft actuator, or timing chain can cause

this DTC to set.

Circuit/System Verification

Note: The engine oil level and the oil pressure are critical to the correct operation of the camshaft position (CMP) actuator system. Verify

that the engine has the correct oil level and the correct oil pressure before continuing with this diagnostic.

1. Ignition ON, observe the scan tool DTC information. Verify that DTC P0016, P0017, P0018, P0019, P0335, P0336, P0338, P0341, P0342,

P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P0521, P0522, P0523, P0638, P2100, P2101, or P2119 is 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) for further diagnosis.

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1901

2010 Cadillac CTS Sedan AWD V6-3.0L Page 1901

* Before the ECM can report DTC P2178 or P2180, failed, DTCs P000A, P000B, P000C, P000D, P0008, P0009, P0010, P0011, P0013,

P0014, P0016, P0017, P0018, P0019, P0020, P0021, P0023, P0024, P0101, P0121, P0122, P0123, P0133, P0153, P0201, P0202, P0203,

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 1,200-3,400 RPM.

* The engine load is between 13-40 %.

* 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 intake air temperature (IAT) is colder than 60掳C (140掳F).

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

* DTCs P2178 and P2180 run continuously when the above conditions are met for approximately 300 s, after Closed Loop fuel control is

enabled.

P2188 or P2190

* Before the ECM can report DTC P2188 or P2190, failed, DTCs P000A, P000B, P000C, P000D, P0008, P0009, P0010, P0011, P0013,

P0014, P0016, P0017, P0018, P0019, P0020, P0021, P0023, P0024, P0101, P0121, P0122, P0123, P0133, P0153, P0201, P0202, P0203,

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)