Diagnostic Test
WARNING: This page is about a different car, the 2017 Jeep Cherokee. However, it is still accessible from the selected car via links, so may be relevant.
- ACTIVE DTC NOTE:
Diagnose all CAN communication DTCs before continuing.
- Ignition on, engine not running.
- With a scan tool, view DTCs.
Is the status Active for this DTC?
Yes
- Go To 2
No
- Refer to STORED LOST COMMUNICATION DTCS and perform the Stored Lost Communication DTCs diagnostic procedure.
- COMMUNICATION DTCS PRESENT IN THE TRANSFER CASE CONTROL MODULE
- With a scan tool check for DTCs in the Transfer Case Control Module / AWD.
Are there any CAN bus DTCs active in the Transfer Case Control Module at this time?
Yes
- Refer to U0102-87-LOST COMMUNICATION WITH TRANSFER CASE CONTROL MODULE / AWD - MISSING MESSAGE and perform the U0102-Lost Communication with Transfer Case Control Module / AWD diagnostic procedure.
No
- Replace and program the Powertrain Control Module (PCM) in accordance with the Service Information. Refer to MODULE, POWERTRAIN CONTROL (PCM), REMOVAL, 2.4L/3.2L .
- Perform the POWERTRAIN VERIFICATION TEST. Refer to POWERTRAIN VERIFICATION TEST, 2.4L .
- With a scan tool check for DTCs in the Transfer Case Control Module / AWD.