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 wipers do not operate at all | WIPER fuse | - |
| Windshield wiper motor assembly | ||
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Front wipers do not operate in INT | Windshield wiper motor assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Front wipers do not operate in LO | Windshield wiper switch assembly | |
| Windshield wiper motor assembly | ||
| Harness or connector | - | |
| Front wipers do not operate in HI | Windshield wiper switch assembly | |
| Windshield wiper motor assembly | ||
| Harness or connector | - | |
| Front washer motor does not operate | WASHER fuse | - |
| Windshield washer motor and pump assembly | ||
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Washer fluid does not flow | Washer fluid | - |
| Washer hose and nozzle | - | |
| Front wipers do not operate when the front washer switch is on | Windshield wiper switch assembly | |
| Windshield wiper motor assembly | ||
| Harness or connector | - | |
| When the front wiper switch is off, the wiper blades do not stop (park) or stop (park) in the wrong position | Front wiper arm installation position | |
| Windshield wiper motor assembly | ||
| Washer fluid level warning system does not operate | Level warning switch assembly | |
| Combination meter assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | See page |
|---|---|---|
| Front wipers do not operate at all | Wiper ECU power source circuit | |
| Front wiper motor circuit | ||
| Windshield wiper relay assembly | ||
| Front wipers do not operate in AUTO | Rain sensor tape | - |
| Rain sensor circuit | ||
| Speed signal circuit | ||
| Front wiper motor circuit | ||
| Wiper and washer switch circuit | ||
| Windshield wiper relay assembly | ||
| When the front wiper switch is in AUTO, the rain sensor sensitivity cannot be adjusted by the windshield wiper switch adjusting ring*. | Windshield glass (rain sensor sensing portion) is dirty | - |
| Windshield wiper switch assembly | ||
| Windshield wiper relay assembly | ||
| Harness or connector | - | |
| Front wipers do not operate in LO or Hi | Front wiper motor circuit | |
| Wiper and washer switch circuit | ||
| Windshield wiper relay assembly | ||
| Front washer motor does not operate | WASHER fuse | - |
| Windshield washer motor and pump assembly | ||
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Washer fluid does not flow | Washer fluid | - |
| Washer hose and nozzle | - | |
| Front wipers do not operate when the front washer switch is on | Front wiper motor circuit | |
| Wiper and washer switch circuit | ||
| When the front wiper switch is off, the wiper blades do not stop (park) or stop (park) in the wrong position | Front wiper arm installation position | |
| Windshield wiper motor assembly | ||
| Windshield wiper switch assembly | ||
| Windshield wiper relay assembly | ||
| Washer fluid level warning system does not operate | Level warning switch assembly | |
| Combination meter assembly | ||
| Harness or connector | - |
Tech Tips
*: The rain sensor sensitivity can be adjusted by the windshield wiper switch adjusting ring.
| Symptom | Suspected Area | See page |
|---|---|---|
| Headlight cleaner system does not operate when the headlight cleaner switch is operated | H-LP CLN fuse | - |
| ECU-IG1 NO. 2 fuse | - | |
| Harness or connector | - | |
| Headlight cleaner switch assembly | ||
| Headlight cleaner motor and pump assembly | ||
| Headlight washer actuator sub-assembly | ||
| Headlight cleaner control relay | ||
| Main body ECU (multiplex network body ECU) | ||
| Headlight cleaner system does not operate when the front washer switch is operated (operates correctly when the headlight cleaner switch assembly is operated) | H-LP CLN fuse | - |
| ECU-IG1 NO. 2 fuse | - | |
| Harness or connector | - | |
| Headlight cleaner motor and pump assembly | ||
| Headlight cleaner control relay | ||
| Main body ECU (multiplex network body ECU) | ||
| Washer fluid does not flow | Washer fluid | - |
| Washer hose and headlight washer actuator sub-assembly | - |