2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2043

2010 Cadillac Truck Escalade/ESV RWD V8-6.2L Page 2043

* Ignition voltage

* Ground

* Ignition control (IC)

* Low reference

If the ECM detects that the IC circuit has an incorrect voltage level, DTC P0351-P0358 will set.

Conditions for Running the DTC

* The ignition is ON.

* DTC P0351-P0358 runs continuously when the above condition is met.

Conditions for Setting the DTC

The ECM detects one of the following failures on the IC circuit:

* An open

* A short to ground

* A short to voltage

Action Taken When the DTC Sets

DTCs P0351-P0358 are Type B DTCs.

Conditions for Clearing the DTC

DTCs P0351-P0358 are Type B DTCs.

Diagnostic Aids

* This test procedure requires that the vehicle battery has passed a load test and is completely charged. Refer to Battery Inspection/Test (See:

Starting and Charging/Testing and Inspection/Component Tests and General Diagnostics/Battery Inspection/Test).

* A high resistance condition on any IC circuit can cause an engine misfire without setting DTC P0351-P0358.

Reference Information

Schematic Reference

Engine Controls Schematics (See: Diagrams/Electrical Diagrams/Powertrain Management/System Diagram)

Connector End View Reference

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

Description and Operation

Electronic Ignition System Description (See: Powertrain Management/Computers and Control Systems/Description and Operation/Electronic

Ignition System Description)

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)

Scan Tool Reference

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

Circuit/System Verification

1. With the engine running, monitor the following ignition control (IC) circuit status parameters with a scan tool:

* Cylinder 1-8 IC Ckt. Short Gnd Test Status

* Cylinder 1-8 IC Ckt. Open Test Status

* Cylinder 1-8 IC Ckt. Short to Volts Test Status

瀚慐ach parameter should display OK.