Possible Causes
| Possible Causes |
|---|
| CAN C BUS CIRCUIT OPEN OR SHORTED |
| ANTI-LOCK BRAKE MODULE |
| POWERTRAIN CONTROL MODULE (PCM) |
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Refer to PRE-DIAGNOSTIC TROUBLESHOOTING PROCEDURE .
The PCM receives the vehicle speed signal over the CAN C bus from the Anti-lock Brake Module.