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
1. Turn the ignition on.
2. With the scan tool, read Instrument Cluster (IPC) DTCs.
3. With the scan tool, erase IPC DTCs.
4. Turn the ignition off.
5. Turn the ignition on.
6. With the scan tool, read IPC DTCs.
  Did the DTC return?
  
  Yes
  - Go To 2
  No
  - Go To 5
CHECK THE (D506) LIN BUS FOR AN OPEN
1. Turn the ignition off.
2. Disconnect the Instrument Cluster harness connector.
3. Disconnect the Seat Belt Reminder Indicator harness connector.
4. Measure the resistance of the (D506) LIN Bus circuit between the Instrument Cluster harness connector and the Seat Belt Reminder Indicator harness connector.
  Is the resistance below 3.0 Ohms?
  
  Yes
  - Go To 3
  No
  - Repair the (D506) LIN Bus circuit for an open or high resistance.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (D506) LIN BUS FOR A SHORT TO GROUND
1. Check for continuity between ground and the (D506) LIN Bus circuit at the Seat Belt Reminder Indicator harness connector.
  Is there continuity between ground and the (D506) LIN Bus circuit?
  
  Yes
  - Repair the (D506) LIN Bus circuit for a short to ground.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 4
CHECK THE SEAT BELT REMINDER INDICATOR MODULE
1. Replace the Seat Belt Reminder Indicator Module in accordance with the Service Information.
2. Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  Did the DTC return?
  
  Yes
  - Using the schematics as a guide, check the IPC 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 Instrument Cluster in accordance with the Service Information. Refer to REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test Complete.
CHECK THE WIRING AND CONNECTORS
1. The conditions necessary to set the DTC are not present at this time.
2. Using the schematics as a guide, inspect the wiring and connectors specific to this Module. Wiggle the wiring and connectors while checking for shorted and open circuits.
3. Check all related splices and connectors for signs of water intrusion, corrosion, pushed out or bent terminals, and correct pin tension.
4. Check Service Bulletins for any possible causes that may apply.
  Were any problems found?
  
  Yes
  - Repair as necessary.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test complete.