INSPECTION PROCEDURE 8: 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. Measure the voltage at ETACS-ECU connector (LIN2 terminal).
- Disconnect the connector, and measure the voltage at the wiring harness side.
- Measure the voltage between ETACS-ECU connector (LIN2 terminal) and body ground.
OK: System voltage
Q: Is the check result normal?
- YES: Replace the Lighting control sensor.
- NO: Go to Step 6.
- STEP 6. Check of short to power supply, short to ground, and open circuit in LIN2 line between ETACS-ECU connector and lighting control sensor connector.
Q: Is the check result normal?
- YES: Intermittent malfunction (Refer to HOW TO COPE WITH INTERMITTENT MALFUNCTION .)
- NO: Repair the connector(s) or wiring harness.