2007 Compass Patriot MK Factory Service Manual 9 - ENGINE

U1417-IMPLAUSIBLE LEFT WHEEL DISTANCE SIGNAL RECEIVED





For a complete wiring diagram Refer to Section 8W.



Possible Causes
 
VEHICLE SPEED SENSOR DTC ACTIVE IN ANTI-LOCK BRAKE MODULE
 
CAN C BUS CIRCUIT SHORTED
 
CAN C BUS CIRCUIT OPEN
 
ANTI-LOCK BRAKE (ABS) MODULE
 
POWERTRAIN CONTROL MODULE (PCM)
 


Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - STANDARD PROCEDURE).

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

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


No

2. ABS MODULE IS ACTIVE ON THE CAN C BUS

Using the Network Review Screen on the scan tool, verify that the ABS Module is active on the bus.

Is the ABS Module active on the bus?

Yes


No

3. DTCS STORED OR ACTIVE IN THE ABS MODULE

With the scan tool, select View DTCs in the ABS Module.

Are any DTCs active or stored in the ABS Module?

Yes


No

4. ACTIVE DTCS IN THE TIPM

With the scan tool, select ECU View and select the TIPM.
With the scan tool, select View DTCs in the TIPM.

Are any ABS related DTCs active or stored in the TIPM?

Yes


No