U1417

SYMPTOM
U1417 - IMPLAUSIBLE LEFT WHEEL DISTANCE SIGNAL RECEIVED

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.

POSSIBLE CAUSES
- VEHICLE SPEED SENSOR FAULT ACTIVE IN ANTI-LOCK BRAKE MODULE
- CAN C BUS CIRCUIT SHORTED
- CAN C BUS CIRCUIT OPEN
- ABS MODULE
- PCM

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. Scan Tool Testing and Procedures

THEORY OF OPERATION
The ABS Module sends an implausible distance signal over the CAN C Bus circuit to the PCM.

DIAGNOSTIC TEST
1. ACTIVE DTC





Ignition on, engine not running.
With a scan tool, read DTCs.
Is the U1417-IMPLAUSIBLE LEFT WHEEL DISTANCE SIGNAL RECEIVED active at this time?
Yes>> Go To 2
No>> Perform (NGC) POWERTRAIN VERIFICATION TEST VER-5. Powertrain Verification Test - Ver 5

2. ABS MODULE IS ACTIVE ON THE CAN C BUS





With the scan tool, select ECU View.
Verify that the ABS Module active on the bus.
Is the ABS Module active on the bus?
Yes>> Go To 3
No>>Perform BODY VERIFICATION TEST VER-1.

3. DTCS STORED OR ACTIVE IN THE ABS MODULE





Check for DTCs in the ABS Module.
Are any DTCs active or stored in the ABS Module?
Yes>> Perform ABS VERIFICATION TEST VER-1
No>> Go to 4

4. ACTIVE DTCS IN THE FCM





With the scan tool, select ECU View and select FCM.
With the scan tool, read active DTCs.
Are any Communication DTCs active in the FCM relating to the ABS System?
Yes>> Replace the ABS Module per Service Information. Perform POWERTRAIN VERIFICATION TEST VER-5.
No>> Replace and program the Powertrain Control Module per Service Information. Perform POWERTRAIN VERIFICATION TEST VER-5.