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DTC P052B, P052D, P054B, or P054D

DTC P052B, P052D, P054B, or P054D

Diagnostic Instructions


• Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• 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°C (-54 to +289°F).

• The engine oil temperature is between -48 to +180°C (-54 to +356°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

DTCs P052B, P052D, P054B, and P054D are type B DTCs.

Conditions for Clearing the DTC

DTCs P052B, P052D, P054B, and P054D are type B DTCs.

Reference Information

Schematic Reference

Engine Controls Schematics (3.0L (LF1)) Engine Controls Schematics (2.8L (LAU))

Connector End View Reference

Component Connector End Views

Description and Operation

Camshaft Actuator System Description

Electrical Information Reference


• Circuit Testing

• Connector Repairs

• Testing for Intermittent Conditions and Poor Connections

• Wiring Repairs


DTC Type Reference

Powertrain Diagnostic Trouble Code (DTC) Type Definitions

Scan Tool Reference

Control Module References for scan tool information

Special Tools

J 35616-200 Test Lamp Kit

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 need 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


1.
Note

The engine oil level and the oil pressure are critical to the correct operation of the camshaft position actuator system. Verify that the engine has the correct oil level and the correct oil pressure before continuing with this diagnostic.


Ignition ON, observe the scan tool DTC information. Verify that none of the following DTCs are set. 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, P2102, P2103, or P2119.

2. If any of the DTCs are set, refer to Diagnostic Trouble Code (DTC) List - Vehicle for further diagnosis.

3. Engine idling, command the appropriate Camshaft Position Actuator from 0 degrees to 40 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states.

4. 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 appropriate Q6 Camshaft Position Actuator Solenoid Valve .

2. Ignition ON, load test for B+ between the ignition circuit terminal 1 and ground.

3. If less than the specified range, test the ignition voltage circuit for a short to ground or an open/high resistance. If the circuit tests normal and the ignition circuit fuse is open, test all the components connected to the ignition circuit and replace as necessary.

4.
Note

Use the j 35616-200 Test Lamp Kit for this test. If the j 35616-200 Test Lamp Kit is not available, use a test lamp that measures greater than 20 Ω.


Connect a test lamp between the control circuit terminal 2 and B+.

5.
Note

The voltage must be measured at the control side of the circuit.


Command the appropriate Camshaft Position Actuator Solenoid Valve ON with a scan tool. Load test for less than 1 V between the control circuit terminal 2 and ground.

6. If greater than the specified range, test the control circuit for an open/high resistance. If the circuit/connections test normal, replace the K20 Engine Control Module.

7. Remove the Camshaft Position Actuator Solenoid Valve . Inspect the Camshaft Position Actuator Solenoid Valve and mounting area for the following conditions:

• For a torn, restricted, mis-positioned, or missing screens at the Camshaft Position Actuator Solenoid Valve

• For engine oil leaks between the oil sealing lands of the Camshaft Position Actuator Solenoid Valve. Inspect the lands of the Camshaft Position Actuator Solenoid Valve for nicks

• For oil seepage at the Camshaft Position Actuator Solenoid Valve connector

8. If a condition is found, replace Q6 Camshaft Position Actuator Solenoid Valve.

9. Ignition OFF, swap the appropriate Camshaft Position Actuator Solenoid Valve with a Camshaft Position Actuator Solenoid Valve that is operating correctly.

10. Engine idling. Command the appropriate Camshaft Position Actuator from 0 degrees to 40 degrees and back to zero while observing the appropriate scan tool Camshaft Position Variance parameters. The Camshaft Position Variance should be less than 2 degrees in each of the commanded states.

11. If greater than the specified value, replace the mechanical camshaft position actuator.

12. If all circuits/connections test normal, test or replace the Q6 Camshaft Position Actuator Solenoid Valve .


Component Testing


1. Ignition OFF, disconnect the harness connector at the appropriate Q6 Camshaft Position Actuator Solenoid Valve .

2. Test for 7-12 Ω between the control terminal 2 and the ignition terminal 1 of the Q6 Camshaft Position Actuator Solenoid Valve .

3. If not within the specified range, replace the Q6 Camshaft Position Actuator Solenoid Valve .

4. Test for infinite resistance between each terminal and the Q6 Camshaft Position Actuator Solenoid Valve housing.

5. If not the specified value, replace the Q6 Camshaft Position Actuator Solenoid Valve.


Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.


• Camshaft Position Actuator Replacement - Bank 1 (LF1 or LFW)

• Camshaft Position Actuator Replacement - Bank 2 (LF1 or LFW)

• Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Intake

• Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 1 (Right Side) Exhaust

• Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Intake

• Camshaft Position Actuator Solenoid Valve Solenoid Replacement - Bank 2 (Left Side) Exhaust

• Control Module References for ECM replacement, programming, and setup