2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 973
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, P0023, P2088, P2089, P2090, P2091, P2092, P2093, P2094, or P2095 (Without 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
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
DTC P2095
- Exhaust Camshaft Position Actuator Solenoid Valve Control Circuit High Voltage 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.
Ignition voltage is supplied directly to the Camshaft Position Actuator Solenoid Valve. The ECM controls the solenoid valve by grounding the
control circuit with a solid state device called a driver. The driver is equipped with a feedback circuit that is pulled-up to a voltage. The ECM can
determine if the control circuit is open, shorted to ground, or shorted to a voltage by monitoring the feedback voltage.
Conditions for Running the DTC
* The engine speed is greater than 80 RPM.
