WIPER AND WASHER SYSTEM PROBLEM SYMPTOMS TABLE
Tech Tips
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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.
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Inspect the fuses and relays related to this system before inspecting the suspected areas below.
| Symptom | Suspected Area | See page |
|---|---|---|
| Wiper and washer systems do not operate at all | Wiper and washer switch circuit | |
| Main body ECU LH (Cowl side junction block LH) | - | |
| Wiper system does not operate at all | FR WIP, J/B, R/B, ALT fuse | - |
| Wiper motor power source circuit | ||
| Wiper and washer switch circuit | ||
| Front wiper motor circuit | ||
| Main body ECU LH (Cowl side junction block LH) | - | |
| Wiper system does not operate (LO) | Wiper and washer switch circuit | |
| Front wiper motor circuit | ||
| Main body ECU LH (Cowl side junction block LH) | - | |
| Wiper system does not operate (HI) | Wiper switch (Hi-speed) circuit | |
| Front wiper motor circuit | ||
| Main body ECU LH (Cowl side junction block LH) | - | |
| Wiper system does not stop | Wiper switch (Hi-speed) circuit | |
| Front wiper motor circuit | ||
| Main body ECU LH (Cowl side junction block LH) | - | |
| Washer system does not operate | WASHER, R/B, ALT fuse | - |
| Wiper and washer switch circuit | ||
| Washer motor circuit | ||
| Front controller (Multiplex network body ECU) | - | |
| Main body ECU LH (Cowl side junction block LH) | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Auto wiper system does not operate (manual operation is normal) | Rain sensor tape*1 | - |
| ECU-IG LH fuse | - | |
| Wiper and washer switch circuit | ||
| Rain sensor circuit | ||
| Rain sensor | ||
| Main body ECU LH (Cowl side junction block LH) | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Headlight cleaner system does not operate at all (Low beam headlight system and washer system are normal) | H-LP CLN, J/B, R/B, ALT fuse | - |
| Headlight cleaner switch circuit | ||
| Headlight cleaner motor and relay circuit | ||
| Main body ECU RH (Cowl side junction block RH) | - | |
| Front controller (Multiplex network body ECU) | - | |
| Headlight cleaner control relay | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Washer fluid level warning system does not operate | Washer fluid level warning switch circuit | |
| Front controller (Multiplex network body ECU) | - | |
| Combination meter |
Tech Tips
*1: Before inspecting the rain sensor, first check if the rain sensor tape is correctly installed.