2010 Cadillac Truck SRX AWD V6-3.0L Page 1166

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2010 Cadillac Truck SRX AWD V6-3.0L Page 1166



瀚慖f less than the specified range, test for a short between the high voltage supply circuit and high voltage control circuit. If the



circuits/connections test normal, test or replace the appropriate Q17 fuel injector(s).



瀚慖f greater than the specified range, test the high voltage supply circuit and high voltage control circuit for an open/high resistance. If the



circuits/connections test normal, test or replace the appropriate Q17 fuel injector.



Component Testing



* Fuel Injector Solenoid Coil Test (LAU) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and Inspection



)Fuel Injector Solenoid Coil Test (LF1, LFW) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Injector/Testing and



Inspection)



* Fuel Injector Balance Test (LAU) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests



and General Diagnostics/Fuel Injector Balance Test)Fuel Injector Balance Test (LF1, LFW) (See: Powertrain Management/Computers and



Control Systems/Testing and Inspection/Component Tests and General Diagnostics/Fuel Injector Balance Test)



Repair Instructions



Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.



* Fuel Injection Fuel Rail Assembly Replacement - Bank 1 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel



Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 1)



* Fuel Injection Fuel Rail Assembly Replacement - Bank 2 (LF1) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel



Rail/Service and Repair/Fuel Injection Fuel Rail Assembly Replacement - Bank 2)



* Control Module References (See: Testing and Inspection/Programming and Relearning) for ECM replacement, setup, and programming



P0131



DTC P0131, P0132, P0137, P0138, P0151, P0152, P0157, P0158, P2A00, P2A01, P2A03, or P2A04 (LF1)



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 P0131



- HO2S Circuit Low Voltage Bank 1 Sensor 1



DTC P0132



- HO2S Circuit High Voltage Bank 1 Sensor 1



DTC P0137



- HO2S Circuit Low Voltage Bank 1 Sensor 2



DTC P0138



- HO2S Circuit High Voltage Bank 1 Sensor 2



DTC P0151



- HO2S Circuit Low Voltage Bank 2 Sensor 1



DTC P0152



- HO2S Circuit High Voltage Bank 2 Sensor 1



DTC P0157



- HO2S Circuit Low Voltage Bank 2 Sensor 2



DTC P0158



- HO2S Circuit High Voltage Bank 2 Sensor 2



DTC P2A00



- HO2S Circuit Closed Loop Performance Bank 1 Sensor 1



DTC P2A03



- HO2S Circuit Closed Loop Performance Bank 2 Sensor 1

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