2010 Cadillac Truck SRX FWD V6-3.0L Page 1619

2010 Cadillac Truck SRX FWD 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.