Diagnostic Procedure

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

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

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 power window main switch related DTC is set.
4. Turn the ignition switch to the "LOCK" (OFF) position.
  Q: Is the DTC set?
  - YES: Diagnose the power window main switch. 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.
STEP 2. Check the power window main switch.
Check that the passenger's or rear power window works by means of the power window main switch.

Q: Is the check result normal?
- YES: Go to Step 3.
- NO: Refer to INSPECTION PROCEDURE 1 "POWER WINDOWS DO NOT WORK AT ALL" .
STEP 3. Check power window main switch connector E-15, front power window motor (LH) connector E-14 for loose, corroded or damaged terminals, or terminals pushed back in the connector.
Q: Are power window main switch connector E-15, front power window motor (LH) connector E-14 in good condition?
- YES: Go to Step 4.
- NO: Repair or replace the damaged component(s). Refer to HARNESS CONNECTOR INSPECTION . Verify that the power window works normally.
STEP 4. Check the wiring harness between power window main switch connector E-15 (terminals Nos. 2, 6) and front power window motor (LH) connector E-14 (terminals Nos. 4, 1).
Q: Is the wiring harness between power window main switch connector E-15 (terminals Nos. 2, 6) and front power window motor (LH) connector E-14 (terminals Nos. 4, 1) in good condition?
- YES: Go to Step 5.
- NO: The wiring harness may be damaged or the connector(s) may have loose, corroded or damaged terminals, or terminals pushed back in the connector. Repair the wiring harness as necessary. Check that the power works normally.
STEP 5. Retest the system.
Check that the driver's power window works by means of the power window main switch.

Q: Is the check result normal?
- YES: No action is necessary and testing is complete.
- NO: Replace the front power window motor (LH). Check that the power works normally.