Tuesday, October 20, 2020

2010 Cadillac Truck SRX AWD V6-3.0L Page 1396

2010 Cadillac Truck SRX AWD V6-3.0L Page 1396



Procedures/Connector Repairs/Connector Repairs)



* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General



Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)



* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring



Repairs/Wiring Repairs)



DTC Type Reference



Powertrain Diagnostic Trouble Code (DTC) Type Definitions (See: Diagnostic Trouble Code Descriptions/Powertrain Diagnostic Trouble Code



(DTC) Type Definitions)



Scan Tool Reference



Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information



Special Tools



* J 26792 - Spark Tester



* For equivalent regional tools, refer to Special Tools (See: Powertrain Management/Computers and Control Systems/Tools and Equipment).



Circuit/System Verification



1. Engine idling at the normal operating temperature, there should be no abnormal engine noise.



瀚慖f there is an abnormal engine noise, refer to Symptoms - Engine Mechanical (See: Engine, Cooling and Exhaust/Engine/Testing and



Inspection/Symptom Related Diagnostic Procedures/Symptoms - Engine Mechanical).



2. Verify that no other DTCs are set.



瀚慖f a DTC is set, refer to Diagnostic Trouble Code (DTC) List - Vehicle (See: Diagnostic Trouble Code Descriptions/Diagnostic Trouble



Code (DTC) List - Vehicle).



3. Observe the scan tool Misfire Current Cyl. 1-6 parameters. The Misfire Current Counters should not be incriminating.



4. Engine idling, perform the cylinder power balance test with a scan tool to isolate the misfiring cylinder. The engine speed should change



when each injector is disabled.



5. 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. Verify that the following conditions do not exist:



* Vacuum hose splits, kinks, and incorrect connections



* Engine vacuum leaks



* Crankcase ventilation system for vacuum leaks



* Fuel pressure that is too low or too high-Refer to Fuel System Diagnosis (LF1 China) (See: Powertrain Management/Fuel Delivery and



Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (China))Fuel System Diagnosis (LF1 Except China) (See:



Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China))Fuel



System Diagnosis (LAU China) (See: Powertrain Management/Fuel Delivery and Air Induction/Fuel Pump/Testing and Inspection/Fuel



System Diagnosis (China))Fuel System Diagnosis (LAU Except China) (See: Powertrain Management/Fuel Delivery and Air



Induction/Fuel Pump/Testing and Inspection/Fuel System Diagnosis (Except China)).



* Contaminated Fuel-Refer to Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool) (See: Powertrain Management/Fuel Delivery and



Air Induction/Fuel/Testing and Inspection/Alcohol/Contaminants-in-Fuel Diagnosis (Special Tool))Alcohol/Contaminants-in-Fuel



Diagnosis (Without Special Tool) (See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component



Tests and General Diagnostics/Alcohol/Contaminants-in-Fuel Diagnosis (Without Special Tool)).



* Exhaust system restrictions



瀚慖f you find any of the above conditions, repair as necessary.



2. Ignition OFF, remove the T8 ignition coil of the misfiring cylinder, but leave the electrical connector connected.



3. Inspect the ignition coil boot for the following conditions:



* Holes



* Tears



* Carbon tracking



* Oil contamination



* water intrusion



瀚慖f you find any of the above conditions, repair as necessary.



4. Install the J 26792 - Spark Tester to the boot of the appropriate T8 ignition coil and ground.

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