Friday, June 17, 2022

2010 Cadillac Truck SRX FWD V6-3.0L Page 958

2010 Cadillac Truck SRX FWD V6-3.0L Page 958



2. Allow the engine to reach the normal operating temperature.



3. Idle the engine for 10 minutes or until a DTC sets. Observe the DTC information with a scan tool, DTCs P0008 and P0009 should not set.



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. Inspect the timing chains and tensioners for excessive wear or misalignment.



瀚慖f you find a condition with the timing chains or tensioners, repair as necessary.



2. Inspect the crankshaft reluctor wheel for being mis-positioned on the crankshaft.



瀚慖f you find a condition with the crankshaft, repair as necessary.



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)



P0010



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



ground to the low reference circuit.



Conditions for Running the DTC



* The ignition voltage is greater than 11 V.



* The ignition switch is in the Crank or Run position.



* The ECM commanded the Camshaft Position Actuator Solenoid Valve ON.

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