DTC C0000
Diagnostic Instructions
DTC Descriptor
| DTC C0000 71: Vehicle Speed Information
Circuit Invalid Data |
Circuit/System Description
The wheel speeds are detected by active wheel speed sensors.
Each wheel speed sensor receives a 12 V reference voltage from the
electronic brake control module (EBCM) and provides an alternating
current square wave signal to the EBCM. As the wheel spins, the
EBCM uses the frequency of the square wave signal to calculate the
wheel speed. The EBCM sends the wheel speed information as a serial
data message. Modules connected to the high speed CAN circuit
monitor for the vehicle speed information.
Conditions for Running the DTC
System voltage is 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
The electronic suspension control is disabled for the duration
of the ignition cycle.
Conditions for Clearing the DTC
A current DTC clears when the diagnostic runs and passes.
Reference Information
Schematic Reference
Antilock Brake System Schematics
Connector End View Reference
Component Connector End Views
Description and Operation
ABS Description and Operation
Electrical Information Reference
Scan Tool Reference
Control Module References for scan tool information
Circuit/System Verification
| 1. |
Drive the vehicle in a
straight line at a speed greater than 40 km/h
(25 mph). |
| 2. |
Verify all scan tool Wheel
Speed Sensor parameters are within 1.6 km/h (1 mph) of
each other. |
⇒ If any parameter
is not within 1.6 km/h (1 mph) of each
other
Refer to Circuit/System Testing.
⇓ If each parameter
is within 1.6 km/h (1 mph) of each other
Circuit/System Testing
| 2. |
Verify that DTC C0035, C0040,
C0045, or C0050 is not set. |
⇒ If any of the DTCs
are set
Refer to
Diagnostic Trouble Code (DTC) List - Vehicle .
⇓ If none of the
listed DTCs are set
| 3. |
Replace the K19 suspension
control module. |
| 4. |
Verify the DTC does not set
while operating the vehicle. |
⇒ If the DTC
sets
Replace the K17 electronic brake
control module. ⇓
If the DTC does not set
Repair Instructions
Perform the
Diagnostic Repair Verification after completing the repair.
Control Module References for electronic brake control module
or suspension control module replacement, programming and setup
|
