WIPER AND WASHER SYSTEM PROBLEM SYMPTOMS TABLE
Note
Inspect the fuses and relays related to this system before inspecting the suspected areas below.
Tech Tips
Use the table below to help determine the cause of problem symptoms. If multiple suspected areas are listed, the potential causes of the symptoms are listed in order of probability in the "Suspected Area" column of the table. Check each symptom by checking the suspected areas in the order they are listed. Replace parts as necessary.
| Symptom | Suspected Area | See page |
|---|---|---|
| Front wiper and washer systems do not operate at all | Wiper and washer switch circuit | |
| Windshield wiper ECU | ||
| Only front wiper system does not operate | Wiper motor power source circuit | |
| Wiper and washer switch circuit | ||
| Front wiper motor circuit | ||
| Windshield wiper ECU | ||
| Front wiper system does not operate (LO, INT) | Wiper and washer switch circuit | |
| Front wiper motor circuit | ||
| Windshield wiper ECU | ||
| Front wiper system does not operate (HI) | Wiper switch (Hi-speed) circuit | |
| Front wiper motor circuit | ||
| Windshield wiper ECU | ||
| Front wiper system does not stop | Wiper switch (Hi-speed) circuit | |
| Front wiper motor circuit | ||
| Windshield wiper ECU | ||
| Only front washer system does not operate | Wiper and washer switch circuit | |
| Washer motor circuit | ||
| Windshield wiper ECU | ||
| Washer fluid does not flow | Washer fluid | - |
| Washer hose and nozzle | - | |
| Front wiper arm does not return to its original position when wiper switch is turned off | Front wiper arm installation position | |
| Front wiper motor |
| Symptom | Suspected Area | See page |
|---|---|---|
| Rear wiper and washer system does not operate | Windshield wiper switch | |
| Harness or connector | - | |
| Only rear wiper system does not operate | Windshield wiper switch | |
| Rear wiper motor circuit | ||
| Harness or connector | - | |
| Only rear washer system does not operate | Windshield wiper switch | |
| Rear washer motor | ||
| Harness or connector | - | |
| Washer fluid does not flow | Washer fluid | - |
| Washer hose and nozzle | - | |
| Rear wiper arm does not return to its original position when wiper switch is turned off | Rear wiper arm installation position | |
| Rear wiper motor |
| Symptom | Suspected Area | See page |
|---|---|---|
| Auto wiper system does not operate (manual operation is normal) | Rain sensor circuit | |
| Rain sensor | ||
| Windshield wiper ECU | ||
| When the auto wiper system is on, the rain sensor sensitivity and wiper operation timing could not be adjusted by the auto sensitivity adjustment | CAN communication system (for LHD) | |
| CAN communication system (for RHD) | ||
| Stop light switch | ||
| Main body ECU (cowl side junction block LH) | - | |
| Combination meter | ||
| Windshield wiper ECU | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Headlight cleaner system does not operate when headlight cleaner switch is operated | Headlight cleaner switch circuit | |
| Headlight cleaner motor and relay circuit | ||
| Headlight signal circuit | ||
| Main body ECU (cowl side junction block LH) | - | |
| Headlight cleaner control relay | ||
| Headlight cleaner system does not operate when the front washer switch is first operated* (w/ Rear Fog Light) | Washer signal circuit | |
| Headlight signal circuit | ||
| Windshield wiper switch | ||
| Main body ECU (cowl side junction block LH) | - | |
| Headlight cleaner control relay |
Tech Tips
*: The headlight cleaner system operates when the front washer switch is first operated with the front washer switch is first operated with the low beam headlights on after the engine switch is turned to on (IG).
| Symptom | Suspected Area | See page |
|---|---|---|
| Washer fluid level warning system does not operate | Harness or connector | - |
| Windshield washer motor and pump assembly | ||
| Combination meter |
| Symptom | Suspected Area | See page |
|---|---|---|
| Washer nozzle heater does not operate | Washer nozzle heater circuit |