INSPECTION PROCEDURE 9: Sometimes the rain sensitive AUTO wiper function works even though there is no rainfall < Vehicles with lighting control sensor >: Diagnosis

WARNING: This page is about a different car, the 2014 Mitsubishi Outlander. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Lighting control sensor installation surface check
Visually check the presence of scratches or air bubbles (diameter of 5 mm or more) on the windshield to which the lighting control sensor is installed.

Q: Is the check result normal?
- YES: Go to Step 2.
- NO: Replace the windshield (Refer to WINDSHIELD REMOVAL AND INSTALLATION ).
STEP 2. Windshield wiper operation check
Check that the windshield wipers work normally.

Q: Is the check result normal?
- YES: Go to Step 3.
- NO: Refer to TROUBLE SYMPTOM CHART .
STEP 3. Use the scan tool MB991958 to check if an ETACS-related diagnostic trouble code is stored.
Connect the scan tool. Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ."

Q: Is the diagnostic trouble code stored?
- YES: Diagnose the ETACS-ECU. Refer to "DIAGNOSTIC TROUBLE CODE CHART ."
- NO: Go to Step 4.
STEP 4. Using scan tool MB991958, read the lighting control sensor diagnostic trouble code.
Check if a lighting control sensor diagnostic trouble code is stored.

Connect the scan tool. Refer to HOW TO CONNECT THE SCAN TOOL (M.U.T.-III) ."

Q: Is the diagnostic trouble code stored?
- YES: Diagnose the lighting control sensor. [Diagnostic Trouble Code: (Refer to DIAGNOSTIC TROUBLE CODE CHART ) or service data (DATA LIST REFERENCE TABLE ).]
- NO: Go to Step 5.
STEP 5. Lighting control sensor (rain sensor) installation surface check
Check that the lighting control sensor (rain sensor) is installed to the windshield glass correctly.

Q: Is the check result normal?
- YES: Go to Step 6 after completion of the lighting control sensor (rain sensor) adaptation (LIGHTING CONTROL SENSOR ).
- NO: Install the lighting control sensor (rain sensor) to the windshield glass correctly (Refer to LIGHTING CONTROL SENSOR REMOVAL AND INSTALLATION ).
STEP 6. Retest the system.
Check the lighting control sensor (rain sensor) after completion of the lighting control sensor (rain sensor) adaptation
1. Windshield glass surface should be dry.
2. Pour water to the windshield glass surface where the lighting control sensor is installed.
Q: Does the windshield wiper operate?

Operate once or more: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION ).

Does not operate: Troubleshoot the rain-sensitive wiper function (Refer to INSPECTION PROCEDURE 7 ).