2010 Cadillac CTS Sedan AWD V6-3.6L Page 900

2010 Cadillac CTS Sedan AWD V6-3.6L Page 900

* 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)

* Camshaft Position Actuator Replacement - Bank 1 (Right Side) Intake (See: Engine, Cooling and Exhaust/Engine/Camshaft, Lifters and

Push Rods/Camshaft/Service and Repair/Camshaft Position Actuator Replacement - Bank 1 (Right Side) Intake)

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

Push Rods/Camshaft/Service and Repair/Camshaft Position Actuator Replacement - Bank 1 (Right Side) Exhaust)

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

Rods/Camshaft/Service and Repair/Camshaft Position Actuator Replacement - Bank 2 (Left Side) Intake)

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

Push Rods/Camshaft/Service and Repair/Camshaft Position Actuator Replacement - Bank 2 (Left Side) Exhaust)

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

P0023

DTC P0010, P0013, P0020, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 (Without 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 P0010

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Bank 1

DTC P0013

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Bank 1

DTC P0020

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Bank 2

DTC P0023

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Bank 2

DTC P2088

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

DTC P2089

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 1

DTC P2090

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 1

DTC P2091

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 1

DTC P2092

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 2

DTC P2093

- Intake Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage Bank 2

DTC P2094

- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit Low Voltage Bank 2

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1929

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1929

瀚慖f the cooling fan does not respond to the commanded states, refer to Cooling Fan Inoperative (LAU) (See: Engine, Cooling and

Exhaust/Cooling System/Testing and Inspection/Symptom Related Diagnostic Procedures/Cooling Fan Inoperative)Cooling Fan

Inoperative (LF1) (See: Engine, Cooling and Exhaust/Cooling System/Testing and Inspection/Symptom Related Diagnostic

Procedures/Cooling Fan Inoperative) for further diagnosis.

3. Ignition ON, command the KR31 auxiliary coolant pump relay ON and OFF with the scan tool. An audible click should be heard when

changing between the commanded states.

4. Start the engine, observe the DTC information with a scan tool. DTCs P2600, P2602, or P2603 should not set.

5. Ignition ON, engine off observe the DTC information with a scan tool. DTC P2601 should not set.

瀚慖f DTC P2601 is set, refer to the following procedures for further diagnosis:

* After Boil Coolant Pump Always On (See: Engine, Cooling and Exhaust/Cooling System/Testing and Inspection/Symptom Related

Diagnostic Procedures/After Boil Coolant Pump Always On)

* After Boil Coolant Pump Inoperative (See: Engine, Cooling and Exhaust/Cooling System/Testing and Inspection/Symptom Related

Diagnostic Procedures/After Boil Coolant Pump Inoperative)

* After Boil Coolant Pump Malfunction (See: Engine, Cooling and Exhaust/Cooling System/Testing and Inspection/Symptom Related

Diagnostic Procedures/After Boil Coolant Pump Malfunction)

6. 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

Caution: Use the connector test adapter kit J 35616-A for any test that requires probing the following items:

* The control module harness connectors

* The electrical center fuse/relay cavities

* The component terminals

* The component harness connector

Using this kit will prevent damage caused by the improper probing of connector terminals.

Note: Refer to Diagnostic Aids before performing the Circuit/System Testing.

1. Ignition OFF, disconnect harness connector X2 at the K20 ECM.

2. Connect a test lamp between terminal X2-45 and ground.

Note:

* A DMM connected between the test lamp probe and ground will measure 5-6 V if the test lamp illuminates with low intensity. The

voltage will measure near B+ if the test lamp illuminates with bright intensity.

* The values listed above are based on the use of the J-35616-210 test lamp, or a comparable test lamp that has approximately 30 ohm of

internal resistance.

3. Ignition ON, connect a fused jumper wire between the powertrain relay control circuit terminal X2-58 and ground. The test lamp should

illuminate with low intensity.

瀚慖f the test lamp does not illuminate, test the auxiliary coolant pump relay control circuit for a short to ground or an open/high resistance.

If the circuit tests normal, test or replace the X50A underhood fuse block (UBEC).

瀚慖f the test lamp illuminates with bright intensity, test the auxiliary coolant pump relay control circuit for a short to voltage. If the circuit

tests normal, test or replace the X50A UBEC.

4. If all circuits/connections test normal, replace the K20 ECM.

Component Testing

1. Ignition OFF, disconnect and remove the X50A UBEC.

2. Remove the KR75 powertrain relay.

3. Test for 170-210 ohm between the powertrain relay switched output circuit terminal 87 and the auxiliary coolant pump relay control circuit at

UBEC terminal X2-21.

瀚慖f not within the specified range, replace the X50A UBEC.

4. Test for greater than 2 ohm between UBEC B+ supply cable and the Afterboil PUMP Fuse 4.

瀚慖f less than the specified range, replace the X50A UBEC.

5. Connect a 10 A fused jumper wire from the positive terminal of the battery to the powertrain relay switched output circuit terminal 87.

Connect a jumper wire from the negative terminal of the battery to the auxiliary coolant pump relay control circuit at UBEC terminal X2-21.

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1024

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1024

* 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

P054B

DTC P052B, P052D, P054B, or P054D

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 P052B

- Cold Start Intake Camshaft Position System Performance Bank 1 - Retarded

DTC P052D

- Cold Start Intake Camshaft Position System Performance Bank 2 - Retarded

DTC P054B

- Cold Start Exhaust Camshaft Position System Performance Bank 1 - Retarded

DTC P054D

- Cold Start Exhaust Camshaft Position System Performance Bank 2 - Retarded

Circuit/System Description

The camshaft position actuator system enables the Engine Control Module (ECM) to change the timing of the camshafts while the engine is

operating. The camshaft position actuator solenoid signal from the ECM is pulse width modulated (PWM). The ECM controls the camshaft position

actuator solenoid duty cycle by controlling the amount of solenoid ON time. The camshaft position actuator solenoid controls the advance or the

retard of each camshaft. The camshaft position actuator solenoid controls the oil flow that applies the pressure to advance or retard the camshafts.

Conditions for Running the DTC

* Before the ECM can report DTC P052B, P052D, P054B, or P054D failed, DTCs P0010, P0013, P0020, P0023, P0341, P0342, P0343,

P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089, P2090, P2091, P2092, P2093, P2094, and P2095 must

run and pass.

* DTC P0010, P0013, P0016, P0017, P0018, P0019, P0020, P0023, P0335, P0336, P0338, P2088, P2089, P2090, P2091, P2092, P2093,

P2094, and P2095 is not set.

* The engine speed is greater than 560 RPM.

* The engine is operating for greater than 1 s.

* The engine coolant temperature is between -48 to +143掳C (-54 to +289掳F).

* The engine oil temperature is between -48 to +180掳C (-54 to +356掳F).

* The engine must accelerate such that the camshaft position actuator system is commanded from the park position to the phased position. This

is considered a cam control cycle. There must be a minimum of 2 cam control cycles for at least 2.5 s each in the phased position.

* DTCs P052B, P052D, P054B, and P054D run continuously once the above conditions are met for greater than 20 s.

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 6 degrees.

* The condition exists for greater than 1 s or for a cumulative of 4 s.

Action Taken When the DTC Sets