Navigation System - Voice Guidance Malfunction

Navigation System - Voice Guidance Malfunction

Reference Information
Schematic Reference

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

Component Connector End Views (Connector Views)
Description and Operation

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

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)

Scan Tool Reference

Control Module References (Programming and Relearning)

Circuit/System Testing

1. Ignition OFF, disconnect the radio harness connector X2 and VCIM harness connector X3.
2. Test for less than 1 volt on the mono out circuit radio harness connector terminal 7and ground.

• If greater than specified value, repair short to voltage.

3. Test for greater than 1 ohm between the mono out circuit radio harness connector terminal 7 and ground.

• If less than specified value, repair short to ground.

4. Test for less than 1 ohm between the mono out circuit radio harness connector terminal 7 and the microphone out signal circuit VCIM harness connector terminal 1.
5. If greater than specified value, repair open circuit.
6. Test for less than 1 volt on the low reference circuit radio harness connector terminal 15 and ground.

• If greater than specified value, repair short to voltage.

7. Test for greater than 1 ohm between the low reference circuit radio harness connector terminal 15 and ground.

• If less than specified value, repair short to ground.

8. Test for less than 1 ohm between the low reference circuit radio harness connector terminal 15 and the low reference signal circuit VCIM harness connector terminal 2.

• If greater than specified value, repair open circuit.

9. If all circuits test normal, replace the radio.

Repair Instructions

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

Control Module References (Programming and Relearning)for radio replacement, setup, and programming