For 1990-2009 cars

### Diagnostic Instructions

• | Perform the Diagnostic System Check - Vehicle prior to using the 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 B0000: Vehicle Speed Information Circuit Plausibility Failure

### Circuit/System Description

The radio receives a vehicle speed signal from the electronic brake control module (EBCM) in order to correlate actual vehicle speed to the movement of the vehicle calculated by the navigation system and reported serial data.

### Conditions for Running the DTC

The radio is in ACCESSORY, RUN, or RAP power mode.

### Conditions for Setting the DTC

The DTC will set for one or more of the following conditions.

• | Vehicle speed from serial data is more than 5 km/h (3 mph) and vehicle speed pulse from the EBCM is 0 km/h (0 mph).

• | Vehicle speed calculated from the navigation processing software is more than 36 km/h (22 mph) and vehicle speed pulse from the EBCM is 0 km/h (0 mph) for 10 seconds continuously.

### Action Taken When the DTC Sets

No action taken.

### Conditions for Clearing the DTC

• | The condition must be corrected.

• | A history DTC clears after 100 malfunction free ignition cycles.

• | The radio receives the clear code command from the scan tool.

### Reference Information

#### Schematic Reference

Radio/Navigation System Schematics

#### Connector End View Reference

Entertainment/Communication Connector End Views

#### Electrical Information Reference

• | Circuit Testing

• | Connector Repairs

• | Testing for Intermittent Conditions and Poor Connections

• | Wiring Repairs

### Circuit/System Testing

Test or repair open, short to ground or short to voltage on the vehicle speed sensor circuit.

⇒ | If all circuits test normal, replace the EBCM.

### Repair Instructions

Perform the Diagnostic Repair Verification after completing the diagnostic procedure.

for EBCM replacement, setup, and programming

Control Module References for EBCM replacement, setup, and programming