U1412

U1412-IMPLAUSIBLE VEHICLE SPEED SIGNAL RECEIVED





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

Theory of Operation

The ABS Module sends vehicle speed information over the CAN C Bus circuit to the PCM.

- When Monitored:
Ignition on.

- Set Condition:
The PCM gets an implausible signal over the CAN C circuit from the ABS Module. The circuit is continuously monitored. One Trip fault.





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

1. ACTIVE DTC
1. Ignition on, engine not running.
2. With the scan tool, View DTCs.

Is the U1412-IMPLAUSIBLE VEHICLE SPEED SIGNAL RECEIVED Active at this time?

Yes

- Go To 2

No

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

2. U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT IS ACTIVE
1. Continue reading DTCs.

Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE at this time?

Yes

- Perform the U0001-No Communication on the Can C Bus Circuit diagnostic procedure. U0001

No

- Go To 3

3. ABS MODULE IS ACTIVE ON THE CAN C BUS
1. With the scan tool, select ECU View.
2. Verify that the ABS Module active on the bus.

Is the ABS Module active on the bus?

Yes

- Go To 4

No

- Perform the No response from ABS diagnostic procedure. Communications - Verbose Codes.

4. ACTIVE DTCS IN THE FCM
1. With the scan tool, select ECU View and select FCM.
2. With the scan tool, read active DTCs.

Is the U0001-NO COMMUNICATION ON THE CAN C BUS CIRCUIT ACTIVE in the FCM at this time?

Yes

- Replace the ABS Module.
- Perform the POWERTRAIN VERIFICATION TEST. Powertrain Verification Test.

No

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