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 | Link |
|---|---|---|
| Front wipers do not operate at all | Windshield wiper motor assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Front wipers do not operate in AUTO | Rain sensor tape | - |
| Windshield wiper switch assembly | ||
| LIN communication line (DTC No. B150C) | ||
| Map light assembly | ||
| Rain sensor | ||
| Harness or connector | - | |
| When the front wiper switch is in AUTO, the rain sensor sensitivity cannot be adjusted by the windshield wiper switch adjusting switch | Windshield glass (Rain sensor sensing portion) is dirty | - |
| Windshield wiper switch assembly | ||
| LIN communication line (DTC No. B150C) | ||
| Rain sensor | ||
| CAN communication line | ||
| Spiral cable with sensor sub-assembly | ||
| Skid control ECU (for LHD) | ||
| Skid control ECU (for RHD) | ||
| Harness or connector | - | |
| When the AUTO wiper ON/OFF switch is ON, auto wiper indicator does not illuminate | Windshield wiper switch assembly | |
| Harness or connector | - | |
| While the AUTO wiper ON/OFF switch is ON, the brightness level of the auto wiper indicator does not change when the headlights is turned on | Windshield wiper switch assembly | |
| Instrument panel junction block assembly | ||
| Main body ECU (Multiplex network body ECU) | ||
| Harness or connector | - | |
| Lighting system*1 | ||
| Lighting system*2 | ||
| Front wipers do not operate in LO or MIST | Windshield wiper motor assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Front wipers do not operate in HI | Windshield wiper motor assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Front washer motor does not operate | Windshield washer motor and pump assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Washer fluid does not flow (Washer motor is normal) | Washer fluid | - |
| Washer hose and nozzle | - | |
| "Washer Fluid Low" is displayed on the multi-information display | Washer fluid | - |
| Level warning switch assembly | ||
| Combination meter assembly | ||
| Harness or connector | - | |
| Front wipers do not operate when the front washer switch is on | Windshield wiper switch 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 | Windshield wiper motor assembly (Front wiper arm installation position) | |
| Windshield wiper motor assembly | ||
| Windshield wiper switch assembly | ||
| Harness or connector | - |
*1: for Single Beam Headlight
*2: for Triple Beam Headlight
| Symptom | Suspected Area | Link |
|---|---|---|
| Front wipers do not operate at all | 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 or MIST | Windshield wiper motor assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Front wipers do not operate in HI | Windshield wiper motor assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| Front washer motor does not operate | Windshield washer motor and pump assembly | |
| Windshield wiper switch assembly | ||
| Harness or connector | - | |
| "Washer Fluid Low" is displayed on the multi-information display | Washer fluid | - |
| Level warning switch assembly | ||
| Combination meter assembly | ||
| Harness or connector | - | |
| Front wipers do not operate when the front washer switch is on | Windshield wiper switch 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 | Windshield wiper motor assembly (Front wiper arm installation position) | |
| Windshield wiper motor assembly | ||
| Windshield wiper switch assembly | ||
| Harness or connector | - |
| Symptom | Suspected Area | Link |
|---|---|---|
| Headlight cleaner system does not operate when the front washer switch is operated (Washer motor is normal) | Headlight cleaner hose and/or headlight cleaner washer nozzle cover | - |
| Headlight cleaner control relay | ||
| Headlight cleaner motor and pump assembly | ||
| Headlight washer actuator sub-assembly LH and/or RH | ||
| Headlight leveling ECU assembly (for Single Beam Headlight) | ||
| LIN communication line (DTC No. B2443) | ||
| Headlight ECU sub-assembly LH and/or RH (for Triple Beam Headlight) | ||
| Harness or connector | - | |
| Headlight cleaner system does not operate when the front washer switch is first operated (Washer motor is normal) | Headlight cleaner hose and/or headlight cleaner washer nozzle cover | - |
| Headlight cleaner control relay | ||
| Headlight cleaner motor and pump assembly | ||
| Headlight washer actuator sub-assembly LH and/or RH | ||
| Headlight leveling ECU assembly (for Single Beam Headlight) | ||
| LIN communication line (DTC No. B2443) | ||
| Headlight ECU sub-assembly LH and/or RH (for Triple Beam Headlight) | ||
| Harness or connector | - |