U1110

U1110-LOST VEHICLE SPEED MESSAGE

For a complete wiring diagram, refer to the Wiring Information.

Theory of Operation

The vehicle speed sensor signal is a direct input to the Anti-Lock Brake (ABS) module. The ABS module busses the wheel speed signal over the CAN C bus.

- 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. One Trip fault.





Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Pre-Diagnostic Troubleshooting Procedure.

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.

1. Ignition on, engine not running.
2. With the scan tool, select View PCM DTCs.

Is the DTC Active at this time?

Yes

- Go To 2

No

- Perform the INTERMITTENT CONDITION diagnostic procedure. . Intermittent Condition Test

2. U0121-LOST COMMUNICATION WITH ABS MODULE ALSO SET
1. With the scan tool continue reading DTCs.

Is the U0121-LOST COMMUNICATION WITH ABS MODULE also set?

Yes

- Follow the diagnostics for U0121-LOST COMMUNICATION WITH ABS MODULE. U0121.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

- Replace and program the Powertrain Control Module. . Powertrain Control Module - Removal
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.