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 |
|---|---|---|
| Wiper and washer systems do not operate at all | Wiper and washer switch circuit | |
| Windshield wiper relay assembly*1 | ||
| Windshield wiper relay assembly*2 | ||
| Headlight cleaner control relay | ||
| Wiper system does not operate at all | Power source circuit | |
| Wiper and washer switch circuit | ||
| Front wiper motor circuit | ||
| Windshield wiper relay assembly*1 | ||
| Windshield wiper relay assembly*2 | ||
| Wiper system does not operate (LO) | Wiper and washer switch circuit | |
| Front wiper motor circuit | ||
| Windshield wiper relay assembly*1,*3 | ||
| Windshield wiper relay assembly*2,*3 | ||
| Headlight cleaner control relay*3 | ||
| Wiper system does not operate (HI) | Wiper and washer switch circuit | |
| Front wiper motor circuit | ||
| Windshield wiper relay assembly*1,*3 | ||
| Windshield wiper relay assembly*2,*3 | ||
| Headlight cleaner control relay*3 | ||
| Wiper system does not stop | Wiper and washer switch circuit | |
| Front wiper motor circuit | ||
| Windshield wiper relay assembly*1 | ||
| Windshield wiper relay assembly*2 | ||
| Washer system does not operate | Wiper and washer switch circuit | |
| Washer motor circuit | ||
| Windshield wiper relay assembly*1 | ||
| Windshield wiper relay assembly*2 | ||
| Headlight cleaner control relay |
*1: for LHD
*2: for RHD
*3: The windshield wiper switch assembly is in the AUTO position.
| Symptom | Suspected Area | See page |
|---|---|---|
| Rear wiper and washer system does not operate | Windshield wiper switch assembly | |
| Harness or connector | - | |
| Rear wiper system does not operate | RR WIPER fuse | |
| Windshield wiper switch assembly | ||
| Rear wiper motor and bracket assembly | ||
| Harness or connector | - | |
| Rear washer system does not operate | Windshield wiper switch assembly | |
| Rear washer motor assembly | ||
| Harness or connector | - | |
| Rear wiper arm does not return to its original position when wiper switch is turned off | Rear wiper motor and bracket assembly | |
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Auto wiper system does not operate (manual operation is possible) | Rain sensor circuit |
| Symptom | Suspected Area | See page |
|---|---|---|
| Headlight cleaner system does not operate at all | Headlight cleaner motor and relay circuit | |
| Main body ECU (instrument panel junction block assembly) | - | |
| Headlight cleaner control relay | ||
| Washer motor circuit | ||
| Lighting system (EXT) |