Thursday, January 23, 2020

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1481

2010 Cadillac Truck SRX AWD V6-2.8L Turbo Page 1481



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



Circuit/System Verification



Engine running, observe the scan tool GEN-F Terminal Signal Circuit parameter. The GEN-F Terminal Signal Circuit parameter should display



between 5-99 percent.



Circuit/System Testing



1. Verify that a test lamp illuminates between the G13 generator B+ terminal A X2 and ground.



瀚慖f the test lamp does not illuminate, test the B+ circuit for a short to ground or an open/high resistance.



2. Ignition OFF, disconnect the X1 harness connector at the G13 generator.



3. Ignition ON, verify the scan tool ECM GEN-F Terminal Signal parameter displays less than 5 percent.



瀚慖f greater than the specified range, test the signal circuit terminal 2 for a short to voltage. If the circuit tests normal, replace the K20 ECM.



4. Install a 3 A fused jumper wire between B+ and the signal circuit terminal 2.



5. Verify the scan tool ECM GEN-F Terminal Signal parameter displays greater than 95 percent.



瀚慖f less than the specified range, test the signal circuit terminal 2 for a short to ground or an open/high resistance. If the circuit tests



normal, replace the K20 ECM.



6. If the circuit tests normal replace the G13 generator.



Repair Instructions



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



* Generator Replacement (LF1) (See: Starting and Charging/Charging System/Alternator/Service and Repair)Generator Replacement (LAU)



(See: Starting and Charging/Charging System/Alternator/Service and Repair)



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



P0625



DTC P0625 or P0626



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 P0625



- Generator F-Terminal Circuit Low Voltage



DTC P0626



- Generator F-Terminal Circuit High Voltage



Diagnostic Fault Information

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