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.

TEST FOR INTERMITTENT CONDITION
NOTE:
Check for any TSB(s) related to the condition. If a TSB applies, perform the procedure outlined in the TSB before continuing.
1. Turn the ignition on.
  NOTE:
  Make sure the battery voltage is between 10.0 and 16.0 volts.
2. With the scan tool, read the module status.
  NOTE:
  Check the BCM for any active CAN hardware DTCs, perform DTC before proceeding.
  
  Does the scan tool indicate that the module is active on the bus?
  
  Yes
  - The no response condition is not present at this time. Using the wiring diagram/schematic as a guide, inspect the wiring for chafed, pierced, pinched, and partially broken wires and the wiring harness connectors for broken, bent, pushed out, and corroded terminals.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 2
CHECK THE (F1) IGNITION OFF/RUN/START CONTROL OUTPUT CIRCUIT FOR AN OPEN OR SHORT
1. Turn the ignition off.
2. Disconnect the Shift Lever Assembly C1 harness connectors.
3. Turn the ignition on.
4. Using a 12-volt test light connected to ground, check the (F1) Ignition Off/Run/Start Control Output circuit.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 3
  No
  - Repair the open or short in the (F1) Ignition Off/Run/Start Control Output circuit.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (Z919) GROUND CIRCUITS FOR AN OPEN
1. Using a 12-volt test light connected to 12-volts, check the (Z919) Ground circuits at the Shift Lever Assembly harness connector.
  Does the test light illuminate brightly?
  
  Yes
  - Go To 4
  No
  - Repair the open in the (Z919) Ground circuit(s).
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (D429) AND (D430) CAN C BUS CIRCUITS FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the CAN C Body C7 Star Connector.
3. Measure the resistance of the (D430) CAN C Bus (-) circuit between the CAN C Body C10 Star Connector and the Shift Lever Assembly harness connector.
4. Measure the resistance of the (D429) CAN C Bus (+) circuit between the CAN C Body C10 Star Connector and the Shift Lever Assembly harness connector.
  Are the resistances below 5.0 Ohms?
  
  Yes
  - Replace the Shift Lever Assembly in accordance with the Service Information.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Repair the open in the (D429) or (D430) CAN C Bus circuit. Inspect the connector for damage.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .