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:
Check the turn signals to be sure they are operating properly before proceeding.
1. Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Turn the drivers side turn signal on.
4. Turn the park lamps on.
5. Turn the rear defogger on, if equipped with heated mirror.
6. Press and release the Mirror Select switch to select the Driver Outside Rearview Mirror.
7. Operate the Mirror Adjust switch in all directions several times while monitoring the scan tool for DTCs.
  NOTE:
  After adjusting the mirror in one direction wait at least two seconds before adjusting the mirror in the opposite direction, as this will allow time for an active fault to set if present.
8. With the scan tool, read DDM DTCs.
  Is the DTC active?
  
  Yes
  - Go To 2
  No
  - 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 and repair as necessary. If no problems are found, test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
CHECK THE (P501) DRIVER MIRROR TURN SIGNAL DRIVER CIRCUIT FOR A SHORT TO ANY SIGNAL OR DRIVER CIRCUIT
1. Turn the ignition off.
2. Turn all accessories off.
3. Disconnect the Driver Outside Rearview Mirror C1 (Component Side) and C2 (Component Side) harness connectors from the Door Module.
4. Check for continuity between the (P501) Driver Mirror Turn Signal Driver circuit and any Signal and Driver circuit at the Driver Outside Rearview Mirror C1 and C2 (Component Side) harness connectors.
  Is there continuity between the (P501) Driver Mirror Turn Signal Driver circuit and any Signal and Driver circuit(s)?
  
  Yes
  - Repair the (P501) Driver Mirror Turn Signal Driver circuit for a short to any Signal or Driver circuit(s).
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Go To 3
MIRROR OR MODULE
1. Replace the Outside Rearview Mirror Assembly in accordance with the Service Information. Refer to MIRROR, OUTSIDE REARVIEW, GLASS, REMOVAL . Turn the ignition on.
2. With the scan tool, record and erase DTCs.
3. Turn the drivers side turn signal on.
4. Turn the park lamps on.
5. Turn the rear defogger on, if equipped with heated mirror.
6. Press and release the Mirror Select switch to select the Driver Outside Rearview Mirror.
7. Operate the Mirror Adjust switch in all directions several times while monitoring the scan tool for DTCs.
  NOTE:
  After adjusting the mirror in one direction wait at least two seconds before adjusting the mirror in the opposite direction, as this will allow time for an active fault to set if present.
8. With the scan tool, read DDM DTCs.
  Is the DTC active?
  
  Yes
  - Replace the Driver Door Module in accordance with Service Information. Refer to MODULE, DOOR (DDM/PDM), REMOVAL .
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .
  No
  - Test complete.
  - Perform the BODY VERIFICATION TEST. Refer to BODY VERIFICATION TEST .