Diagnostic Procedure

Required Special Tools: 

• MB992006: Extra fine probe
• MB991223: Harness set
• MB991958: Scan Tool (M.U.T.-III Sub Assembly)
  • MB991824: Vehicles Communication Interface (V.C.I.)
  • MB991827: M.U.T.-III USB Cable
  • MB991910: M.U.T.-III Main Harness A

1. STEP 1. Using scan tool MB991958, read the diagnostic trouble code. 
   CAUTION: To prevent damage to scan tool MB991958, always turn the ignition switch to the "LOCK" (OFF) position before connecting or disconnecting scan tool MB991958.
   1. Connect scan tool MB991958. Refer to "HOW TO CONNECT SCAN TOOL (M.U.T.-III) ."
   2. Turn the ignition switch to the "ON" position.
   3. Check whether the sunroof motor assembly related DTC is set.
   4. Turn the ignition switch to the "LOCK" (OFF) position.

      Q: Is the DTC set? 

      • YES:  Diagnose the sunroof motor assembly. Refer to DIAGNOSTIC TROUBLE CODE CHART  .
      • NO:  Go to Step 2.
        Fig 1: Connecting Scan Tool To Data Link Connector

        Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
2. STEP 2. Check the trouble symptom. 

   Check the sunroof trouble symptom according to the following procedures.

   1. Carry out the learning procedures of the sunroof fully closed position (Refer to LEARNING PROCEDURES OF THE SUNROOF FULLY CLOSED POSITION  ).
   2. Check the trouble symptom.

      Q: Is the check result normal? 

      • YES:  No action is necessary and testing is complete.
      • NO:  Replace the sunroof motor assembly. Check that the sunroof works normally.