GPEC

U1110-LOST VEHICLE SPEED MESSAGE





For a complete wiring diagram Consult Diagrams/Electrical.

- 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.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Initial Inspection and Diagnostic Overview.

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
NOTE: For vehicle communication problems, use the scan tool to refer to the Network Review Screen. The screen depicts a high level view of the vehicle network. Fault and problem areas appear in red. Selecting any of the network components allows access to the source of the problem.

Ignition on, engine not running.
With a scan tool, select View DTCs.
Is the status Active for this DTC?

Yes

- Go to 2

No

- Refer to the *CHECKING FOR AN INTERMITTENT DTC Diagnostic Procedure.Checking For An Intermittent DTC
- Perform the PCM Verification Test Ver. 1Powertrain Verification Test

2. U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE ALSO SET
With a scan tool, select View DTCs.
Is the DTC U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE also set?

Yes

- Perform the diagnostic procedure for U0121-LOST COMMUNICATION WITH ANTI-LOCK BRAKE MODULE. U0121
- Perform the PCM Verification Test Ver. 1Powertrain Verification Test

No

- Replace and program the Powertrain Control Module (PCM).
- Perform the PCM Verification Test Ver. 1Powertrain Verification Test