2010 Cadillac Truck SRX AWD V6-3.0L Page 1021
1. Ignition ON, observe the DTC information with a scan tool. Verify that none of the following DTCs are set. DTC P0010, P0013, P0020,
P0023, P0335, P0336, P0338, P0341, P0342, P0343, P0346, P0347, P0348, P0366, P0367, P0368, P0391, P0392, P0393, P2088, P2089,
P2090, P2091, P2092, P2093, P2094, or P2095.
瀚慖f any of the DTCs listed are set refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code
Descriptions/Diagnostic Trouble Code (DTC) List - Vehicle) for further diagnosis.
2. Idle the engine at normal operating temperature for 10 min. DTCs P0016, P0017, P0018, or P0019 should not set.
瀚慖f a DTC sets, inspect for the following and repair as necessary:
* The correct installation of the camshaft sensors
* The correct installation of the crankshaft sensor
* A timing chain tensioner condition
* An incorrectly installed timing chain
* Excessive play in the timing chain
* A timing chain that jumped teeth
* A crankshaft reluctor wheel that has moved in relationship to top dead center (TDC) on the crankshaft
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 you observed from the Freeze Frame/Failure Records data.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
* Timing Chain Alignment Diagram (See: Engine, Cooling and Exhaust/Engine/Timing Components/Timing Component Alignment
Marks/Locations)
* Camshaft Timing Drive Components Cleaning and Inspection (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/81.
Camshaft Timing Drive Components Cleaning and Inspection)
* Crankshaft and Bearing Cleaning and Inspection (See: Engine, Cooling and Exhaust/Engine/Service and Repair/Overhaul/66. Crankshaft
and Bearing Cleaning and Inspection)
P0020
DTC P0010, P0013, P0020, or P0023 (LF1, LFW)
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
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 Valve signal from the ECM is pulse width modulated (PWM). The ECM controls the
Camshaft Position Actuator Solenoid Valve duty cycle by controlling the amount of solenoid valve ON time. The Camshaft Position Actuator
Solenoid Valve controls the advance or the retard of each camshaft. The Camshaft Position Actuator Solenoid Valve controls the oil flow that
applies the pressure to advance or retard the camshafts.
The ECM controls the Camshaft Position Actuator Solenoid Valve by suppling a 12 V pulse width modulated (PWM) signal. The ECM supplies a
