2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2804

2010 Cadillac Truck Escalade RWD V8-6.0L Hybrid Page 2804

The history DTC will clear after 40 consecutive warm-up cycles have occurred without a malfunction.

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)

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)

Circuit/System Testing

1. Ignition OFF, disconnect the harness connector at the generator.

2. Ignition ON, test for less than 1 volt between the generator turn on signal circuit terminal 1 and ground.

瀚慖f greater than the specified range, test the generator turn on signal circuit for a short to voltage. If the circuit tests normal, replace the

ECM.

3. Engine running, test for greater than 3.5 volts between the generator turn on signal circuit and ground.

瀚慖f less than the specified range, test the generator turn on signal circuit for a short to ground, an open or a high resistance. If the circuit

tests normal, replace the ECM.

4. If the circuit tests normal, replace the generator.

Repair Instructions

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

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

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

P1682

DTC P1682

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 Descriptor

DTC P1682

- Ignition 1 Switch Circuit 2

Diagnostic Fault Information