For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure.

• | Review Strategy Based Diagnosis for an overview of the diagnostic approach.

• | Diagnostic Procedure Instructions provides an overview of each diagnostic category

### DTC Descriptor

DTC B1011 54: System Disabled Information Stored DVD Drive Over Temperature

### Circuit/System Description

The internal diagnostics of the navigation module periodically test the DVD drive temperature.

### Conditions for Running the DTC

The radio must detect one of the following:

• | Radio ON.

• | The system voltage is at least 9 volts and no more than 16 volts.

### Conditions for Setting the DTC

The navigation module detects an over-heat condition.

### Action Taken When the DTC Sets

The navigation system will display either of the following messages: "Temperature High" and/or "DVD drive over temperature".

### Conditions for Clearing the DTC

• | The condition for setting the DTC is no longer present.

• | A history DTC clears after 50 fault-free ignition cycles.

### Reference Information

#### Schematic Reference

Radio/Navigation System Schematics

#### Connector End View Reference

Component Connector End Views

#### Description and Operation

Navigation System Description and Operation

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

#### Scan Tool Reference

Control Module References for scan tool information

### Circuit/System Verification

Note: Allow the entertainment system to cool if the ambient temperature inside the vehicle is in excess before proceeding with this diagnostic procedure.

1. Allow the navigation module to cool down for 15 minutes.
2. Verify DTC B1011 54 is not set.

⇒ | If DTC is set, replace the navigation module.

### Repair Instructions

Perform the Diagnostic Repair Verification.

Control Module References for navigation module replacement, setup, and programming..