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.
- CHECK FOR AN ACTIVE DTC NOTE:
Diagnose and repair any Lost Communication or CAN C BUS DTCs before continuing with this diagnostic procedure.
- Turn the ignition on.
- With a scan tool, read DTCs.
Does the scan tool display this DTC as active?
Yes
- Go To 2
No
- Test complete. The condition or conditions that originally set this DTC are not present at this time. Using the wiring diagrams as a guide, check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals and correct pin tension.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
- CHECK OTHER MODULES FOR LOST VEHICLE SPEED MESSAGE DTCS
- With the scan tool, check if any other modules have a Lost Vehicle Speed Message DTC present.
Were any Lost Vehicle Speed Message DTCs present in any other modules?
Yes
- Replace and program the Anti-Lock Brake Module (ABS) in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM (ABS), REMOVAL .
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
No
- Replace and program the Body Control Module (BCM) in accordance with the Service Information.
- Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
- With the scan tool, check if any other modules have a Lost Vehicle Speed Message DTC present.