2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 627

2010 Cadillac Truck Escalade EXT AWD V8-6.2L Page 627

The internal backlighting of the navigation display screen located in the navigation radio.

Conditions for Running the DTC

* Radio ON.

* Battery voltage must be between 9-16 volts.

Conditions for Setting the DTC

* The navigation radio tests the navigation display backlighting every 1 second.

* The radio determines there is a malfunction or overheat condition in the navigation display backlighting.

Action Taken When the DTC Sets

Navigation backlighting may be too bright, dim or blank.

Conditions for Clearing the DTC

* The condition responsible for setting the DTC no longer exists.

* A history DTC will clear once 50 consecutive malfunction-free ignition cycles have occurred.

Diagnostic Aids

Occasionally it is possible to overheat the navigation display backlighting due to excessive ambient heat inside the vehicle. In this instance it may

be necessary to allow time for the display to cool.

Reference Information

Schematic Reference

Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System

Schematics)

Connector End View Reference

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

Description and Operation

Navigation System Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Navigation 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)

Scan Tool Reference

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

Circuit/System Verification

1. Ignition OFF, allow the navigation display to cool if the ambient temperature inside the vehicle is excessive and the radio is hot to the touch.

Verify the navigation display is cool and the DTC has cleared and gone to history.

2. Ignition ON, with a scan tool, clear all DTCs and operate the audio/navigation system within the Conditions for Running the DTC. Verify the

DTC does not reset.

瀚慖f the DTC resets, replace the radio.

Repair Instructions

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

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