Saturday, July 10, 2021

2010 Cadillac Truck SRX AWD V6-3.0L Page 1619

2010 Cadillac Truck SRX AWD V6-3.0L Page 1619



P0625



The ECM detects a pulse width modulated (PWM) signal less than 5% for 15 s.



P0626



The ECM detects a pulse width modulated (PWM) signal greater than 65% for 15 s.



Action Taken When the DTC Sets



DTC P0625 and P0626 are C type DTCs.



Conditions for Clearing the DTC



DTC P0625 and P0626 are C type DTCs.



Reference Information



Schematic Reference



Starting and Charging Schematics (See: Starting and Charging/Diagrams/Electrical Diagrams)



Connector End View Reference



Component Connector End Views (See: Diagrams/Connector Views/Connector End Views By Name)



Description and Operation



Charging System Description and Operation (See: Starting and Charging/Charging System/Description and Operation)



Electrical Information Reference



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



Testing/Circuit Testing)



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



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



Circuit/System Verification



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



display between 5-99%.



Circuit/System Testing



1. Verify that a test lamp illuminates between the G13 Generator B+ terminal A X1 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 X2 harness connector at the G13 Generator.



3. Ignition ON, verify the scan tool Generator F-Terminal Signal parameter displays less than 5%.



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



Engine Control Module.



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



5. Verify the scan tool Generator F-Terminal Signal parameter displays greater than 95%.



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 Engine Control Module.



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

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