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:
If any other DTCs are present, repair them first before continuing with this diagnostic procedure.

Ignition on, engine not running.
1. With the scan tool, record and erase DTCs.
2. Cycle the ignition switch from off to on.
3. With the scan tool, read DTCs.
  Is the DTC active at this time?
  
  Yes
  - Go To 2
  No
  - The conditions that caused this code to set are not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring harness and electrical connectors.
  - Perform the EPB VERIFICATION TEST. Refer to STANDARD PROCEDURE .
CHECK FOR RADIO FREQUENCY (RF) HUB DTCS
1. With the scan tool, read RF HUB DTCs.
  Are there any RF HUB DTCs present?
  
  Yes
  - Perform the appropriate diagnostic procedure. Refer to DIAGNOSTIC CODE INDEX, RFH .
  No
  - Go To 3
CHECK THE (F941) FUSED RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT CIRCUIT
1. Turn the ignition on.
2. Using a 12-volt test light connected to ground, check the (F941) Fused Run/Start Control Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4
  No
  - Repair the (F941) Fused Run/Start Control Output circuit for an open or short.
  - Perform the EPB VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(D61) CAN C BUS (+) CIRCUIT OPEN OR HIGH RESISTANCE
1. Turn the ignition off.
2. Disconnect the CAN C Body C13 Star harness connector.
3. Measure the resistance of the (D61) CAN C Bus (+) circuit between the CAN C Body C13 Star harness connector and the ABS Module harness connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Go To 5
  No
  - Repair the (D61) CAN C Bus (+) circuit for an open or high resistance.
  - Perform the EPB VERIFICATION TEST. Refer to STANDARD PROCEDURE .
(D60) CAN C BUS (-) CIRCUIT OPEN OR HIGH RESISTANCE
1. Measure the resistance of the (D60) CAN C Bus (-) circuit between the CAN C Body C13 Star harness connector and the ABS Module harness connector.
  Is resistance below 5.0 Ohms?
  
  Yes
  - Replace the Electric Parking Brake (EPB) Module in accordance with service information. Refer to MODULE, ELECTRIC PARK BRAKE (EPBM), REMOVAL .
  - Perform the EPB VERIFICATION TEST. Refer to STANDARD PROCEDURE .
  No
  - Repair the (D60) CAN C Bus (-) circuit for an open or high resistance.
  - Perform the EPB VERIFICATION TEST. Refer to STANDARD PROCEDURE .