Navigation Display Malfunction

Navigation Display Malfunction

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions) provides an overview of each diagnostic category.

Circuit/System Description

When the navigation radio is on, a discrete 12 V signal is supplied on the Entertainment Remote Enable Signal circuit to the Display Module and Display Actuator. This signal is used to control the power state of the modules.

Reference Information
Schematic Reference

Radio/Navigation System Schematics (Radio/Navigation System Schematics)
Connector End View Reference

Component Connector End Views (Connector End Views By Name)
Description and Operation

Navigation System Description and Operation (Navigation System)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Programming and Relearning) for scan tool information

Circuit/System Testing

Note: The ignition circuit supplied by the radio controls the Display Module and Display Module Actuator. Each of the modules/components will need to be disconnected if the ignition circuit test fails for a short to voltage or short to ground. Disconnect one module/component at a time while testing the ignition circuit for a short to voltage or short to ground. If the fault is no longer present when disconnecting a module/component replace that module/component. If the fault is still present with all the modules/components disconnected, repair the circuit.

Display Power/Display Actuator Malfunction
1. Ignition OFF, disconnect one of the connectors listed below at an inoperative module/component:

* Radio/HVAC Display X1
* Radio/HVAC Display X2

2. Ignition ON, verify that a test lamp illuminates between the ignition circuit terminal listed below and ground.

* Radio/HVAC Display X1 - terminal 4
* Radio/HVAC Display X2 - terminal 3

• If the test lamp does not illuminate, test the ignition circuit for a short to ground or an open/high resistance. If the circuit tests normal replace the radio.

3. If all circuits test normal, replace the module/component that was disconnected in step 1.

Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the repair.

* Radio Antenna Module Replacement (Sedan) (Radio Antenna Module Replacement)Radio Antenna Module Replacement (Wagon) (Radio Antenna Module Replacement)Radio Antenna Module Replacement (Coupe) (Radio Antenna Module Replacement)
* Radio, Video, Audio Disc Player, and Navigation Information Display Replacement (Radio, Video, Audio Disc Player, and Navigation Information Display Replacement)
* Control Module References (Programming and Relearning) for radio and amplifier replacement, programming, and setup