DTC B0000
Diagnostic Instructions
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
Component Connector End Views
Electrical Information Reference
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.
Control Module References
| © Copyright Chevrolet. All rights reserved |
