INSPECTION PROCEDURE 9: Sometimes The Rain Sensitive AUTO Wiper Function Works Even Though There Is No Rainfall <Vehicles With Lighting Control Sensor>: Diagnosis
- STEP 1. Lighting control sensor installation surface check
Visually check the presence of scratches or air bubbles [diameter of 5 mm (0.2 inch) 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 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. Using scan tool (M.U.T.-IIISE), read the ETACS-ECU DTC.
Check if DTC is set in the ETACS-ECU.
Q: Is the DTC set?
YES: Troubleshoot the ETACS (Refer to DIAGNOSTIC TROUBLE CODE CHART ).
NO: Go to Step 4.
- STEP 4. Using scan tool (M.U.T.-IIISE), read the lighting control sensor DTC.
Check if a lighting control sensor-related DTC is set in the LIN.
Q: Is the DTC set?
YES: Diagnose the lighting control sensor (Refer to DIAGNOSTIC TROUBLE CODE CHART ).
NO: Go to Step 5.
- STEP 5. Check that the lighting control sensor (rain sensor) is installed to the windshield glass correctly.
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 (Refer to RAIN SENSOR ADAPTATION ).
NO: Install the lighting control sensor (rain sensor) to the windshield glass correctly (Refer to LIGHTING CONTROL SENSOR ).
- STEP 6. Retest the system.
Check the lighting control sensor (rain sensor) after completion of the lighting control sensor (rain sensor) adaptation
- Windshield glass surface should be dry.
- 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 MALFUNCTIONS ).
Does not operate: Troubleshoot the rain-sensitive wiper function (Refer to INSPECTION PROCEDURE 7: THE RAIN SENSITIVE AUTO WIPER FUNCTION DOES NOT WORK AT ALL <VEHICLES WITH LIGHTING CONTROL SENSOR> ).