2010 Cadillac CTS Sedan AWD V6-3.6L Page 800

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2010 Cadillac CTS Sedan AWD V6-3.6L Page 800



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



P02AD



DTC P029D, P02A1, P02A5, P02A9, P02AD, or P02B1 (w/LLT)



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 P029D



- Cylinder 1 Injector Leak Detected



DTC P02A1



- Cylinder 2 Injector Leak Detected



DTC P02A5



- Cylinder 3 Injector Leak Detected



DTC P02A9



- Cylinder 4 Injector Leak Detected



DTC P02AD



- Cylinder 5 Injector Leak Detected



DTC P02B1



- Cylinder 6 Injector Leak Detected



Circuit/System Description



The fuel injectors are mounted in the cylinder head beneath the intake ports and spray fuel directly into the combustion chamber. Direct injection



requires high fuel pressure due to the fuel injector's location in the combustion chamber. High pressure fuel is regulated by the high pressure fuel



pump actuator, which is a part of the high pressure fuel pump. The engine control module (ECM) monitors the actual fuel rail fuel pressure via the



fuel rail pressure sensor and commands the high pressure fuel pump actuator duty cycle in order to maintain the desired fuel rail pressure. If a fuel



injector delivers more fuel than is needed misfire counts will accumulate on that cylinder, and the ECM will not be able to maintain the desired fuel



rail pressure, indicating a stuck open or leaking fuel injector.



Conditions for Running the DTC



* The engine speed is between 1,520-6,000 RPM



* The engine load is less than 190 percent.



* The misfire monitor is enabled.



* DTCs P029D, P02A1, P02A5, P02A9, P02AD, and P02B1 run continuously once the conditions above have been met for approximately 20



seconds.



Conditions for Setting the DTC



The ECM detects a specific cylinder misfire rate of greater than 30 counts in less than 17 engine revolutions, and P0087 is set. The condition exists

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