Diagnostic Test

WARNING: This page is about a different car, the 2005 Jeep Grand Cherokee. However, it is still accessible from the selected car via links, so may be relevant.

1) ACTIVE DTC
Ignition on, engine not running.

With a scan tool, read DTCs.

Is the U1418-IMPLAUSIBLE RIGHT WHEEL DISTANCE SIGNAL RECEIVED active at this time?

Yes
1. Go To step 2).
No
1. Refer to INTERMITTENT CONDITION .
2. Perform POWERTRAIN VERIFICATION TEST .
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
1. Go To step 3).
No
1. (Refer to ELECTRONIC CONTROL MODULES - ELECTRICAL DIAGNOSTICS ) for No Response diagnostic procedures.
2. 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
1. Refer to BRAKE CONTROLLER ELECTRICAL DIAGNOSTICS and perform the diagnostics for the DTCs in the ABS Module.
2. Perform ABS VERIFICATION TEST - VER 1 .
No
1. Go to step 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
1. Replace the ABS Module per Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .
No
1. Replace and program the Powertrain Control Module per Service Information.
2. Perform POWERTRAIN VERIFICATION TEST .