Antilock Brake System
DTC B0000
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.
DTC Descriptor
DTC B0000 71
- Vehicle Speed Information Circuit Invalid Data
Diagnostic Fault Information
Circuit/System Description
The wheel speeds are detected by active wheel speed sensors. Each wheel speed sensor receives a ignition voltage from the electronic brake control module and provides an alternating current square wave signal to the electronic brake control module. As the wheel spins, the electronic brake control module uses the frequency of the square wave signal to calculate the wheel speed. The electronic brake control module sends the wheel speed information as a high speed controller area network (CAN) serial data message.
Some modules connected to the high speed CAN bus monitor for the wheel speed information. This DTC is set when the wheel speed information has not been validated. The radio receives the vehicle speed signal from the electronic brake control module in order to correlate actual vehicle speed to the movement of the vehicle calculated by the navigation system.
Conditions for Running the DTC
* Radio ON.
* Battery voltage must be between 9-16 V.
Conditions for Setting the DTC
A supervised periodic message that includes the wheel speed serial data has not been received.
Action Taken When the DTC Sets
* Vehicle indicated location may be inaccurate.
* Turn by turn route navigation may be inoperative.
Conditions for Clearing the DTC
* The current DTC clears when the diagnostic runs and passes.
* The history DTC will clear after 40 consecutive fault-free ignition cycles have occurred.
Reference Information
Schematic Reference
* Antilock Brake System Schematics [1][2]Antilock Brakes / Traction Control Systems
* Radio/Navigation System Schematics Radio/Navigation System Schematics
Connector End View Reference
Component Connector End Views Sunshade - Left (DH6)
Description and Operation
ABS Description and Operation Description and Operation
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 Control Module References for scan tool information
Circuit/System Testing
1. Ignition ON.
2. Verify that DTC C0035, C0040, C0045, or C0050 is not set.
• If any of the DTCs are Set
Refer to DTC C0035, C0040, C0045, or C0050 C0035.
• If none of the DTCs are Set
3. Ignition OFF, disconnect the harness connector at the K17 electronic brake control module and the X3 harness connector at the A11 radio, ignition ON.
4. Test for less than 1 V between the K17 electronic brake control module signal circuit terminal 7 and ground.
• If 1 V or greater
Repair the short to voltage on the circuit.
• If less than 1 V
5. Test for infinite resistance between the signal circuit and ground.
• If less than infinite resistance
Repair the short to ground on the circuit.
• If infinite resistance
6. Test for less than 2 ohms in the signal circuit end to end.
• If 2 ohms or greater
Repair the open/high resistance in the circuit.
• If less than 2 ohms
7. Replace the K17 electronic brake control module.
8. Verify the DTC does not set while operating the vehicle within the Conditions for Running the DTC.
• If the DTC sets
Replace the A11 radio.
• If the DTC does not set
9. All OK.
Repair Instructions
Perform the Diagnostic Repair Verification Verification Tests after completing the repair.
Control Module References Control Module References for electronic brake control module or radio replacement, programming and setup