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.

VERIFY THE DTC IS ACTIVE
NOTE:
This DTC must be active for the results of this test to be valid.
1. Perform any Technical Service Bulletins (TSBs) that may apply.
2. Turn the ignition on.
3. With the scan tool, record and erase the DTCs.
4. Cycle the ignition switch from off to on.
5. With the scan tool, read the DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - Perform the ABS-INTERMITTENT CONDITION TEST. Refer to ABS INTERMITTENT CONDITION .
CHECK FOR POWERTRAIN CONTROL MODULE (PCM) DTCS ARE PRESENT
1. With the scan tool, read the PCM DTCs.
  Are there any PCM DTCs present?
  
  Yes
  - Perform the appropriate diagnostic procedures. For 2.4L, refer to 2.4L - DIAGNOSTIC CODE INDEX . For 3.2L, refer to 3.2L - DIAGNOSTIC CODE INDEX .
  No
  - Go To 3
CHECK FOR RADIO FREQUENCY (RF) HUB DTCS ARE PRESENT
1. With the scan tool, read the RF Hub DTCs.
  Are there any RF Hub DTCs present?
  
  Yes
  - Perform the appropriate diagnostic procedures. Refer to DIAGNOSTIC CODE INDEX, RFH .
  No
  - Go To 4
CHECK THE REVERSE GEAR SWITCH
1. With the scan tool, in the PCM under "Data Display" check the Reverse Gear Switch functionality.
  NOTE:
  If equipped.
  
  With the scan tool, in the PCM under "Data Display" check the Clutch Switch functionality.
  
  Are the switches operating correctly?
  
  Yes
  - Using the schematics as a guide, check the Anti-Lock Brake System (ABS) Module pins, terminals, and connectors for corrosion, damage, or terminal push out. Pay particular attention to all power and ground circuits. If no problems are found, replace the Anti-lock Brake System (ABS) Module in accordance with the Service Information. Refer to MODULE, ANTI-LOCK BRAKE SYSTEM (ABS), REMOVAL .
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .
  No
  - Repair as necessary.
  - Perform the ABS VERIFICATION TEST. Refer to ABS VERIFICATION TEST .