U1110
U1110-LOST VEHICLE SPEED MESSAGEU1110-Lost Vehicle Speed Message:
WHEN MONITORED
Ignition on.
SET CONDITION
The PCM doesn't receive a vehicle speed signal from the Anti-lock brake Module over the CAN C bus.
POSSIBLE CAUSES
- CAN C BUS Circuit open or shorted
- Anti-lock brake module
- PCM
Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding.
Theory of Operation
The PCM receives the vehicle speed signal over the CAN C bus from the Anti-lock Brake Module.
DIAGNOSTIC TEST
1. ACTIVE DTC
Ignition on, engine not running.
With the scan tool read Powertrain DTCs.
Q: Is the DTC active at this time?
YES: Go To 2
NO: Refer to the INTERMITTENT CONDITION Diagnostic Procedure. Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test
2. U0121-LOST COMMUNICATION WITH ABS MODULE ALSO SET
With the scan tool continue reading DTCs.
Q: Is the U0121-LOST COMMUNICATION WITH ABS MODULE also set?
YES: Follow the diagnostics for U0121-LOST COMMUNICATION WITH ABS MODULE Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test
NO: Replace and program the Powertrain Control Module per Service Information. Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test