Problem Symptoms Table
WARNING: This page is about a different car, the 2006 Lexus IS 350 and 2006 Lexus IS 250. However, it is still accessible from the selected car via links, so may be relevant.
HINT:
- Use PROBLEM SYMPTOMS TABLE to help determine the cause of the problem symptom. The potential cases 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 order they are listed. Replace parts as necessary.
- Inspect the fuses and relays related to the system before inspecting the suspected areas below.
FRONT WIPER AND WASHER SYSTEM
PROBLEM SYMPTOMS TABLE
| Symptom | Suspected area | Reference |
|---|---|---|
| Wiper and washer systems do not operate at all | Wiper and washer switch circuit | Wiper and Washer Switch Circuit |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS | |
| Wiper system does not operate at all | WIP, AIM, D-J/B, R/B, ALT fuse | - |
| Wiper motor power source circuit | Wiper Motor Power Source Circuit | |
| Wiper and washer switch circuit | Wiper and Washer Switch Circuit | |
| Front wiper motor circuit | Front Wiper Motor Circuit | |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS | |
| Wiper system does not operate (LO, INT) | Wiper and washer switch circuit | Wiper and Washer Switch Circuit |
| Front wiper motor circuit | Front Wiper Motor Circuit | |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS | |
| Wiper system does not operate (HI) | Wiper switch (Hi-speed) circuit | Wiper Switch (HI Speed) Circuit |
| Front wiper motor circuit | Front Wiper Motor Circuit | |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS | |
| Wiper system does not stop | Wiper switch (Hi-speed) circuit | Wiper Switch (HI Speed) Circuit |
| Front wiper motor circuit | Front Wiper Motor Circuit | |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS | |
| Washer system does not operate | WASHER, R/B, ALT fuse | - |
| Wiper and washer switch circuit | Wiper and Washer Switch Circuit | |
| Washer motor circuit | Washer Motor Circuit | |
| Engine room No. 2 J/B (Front controller) | CUSTOMIZE PARAMETERS | |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS |
AUTO WIPER SYSTEM
AUTO WIPER SYSTEM
| Symptom | Suspected area | Reference |
|---|---|---|
| Auto wiper system does not operate (manual operation is normal) | Rain sensor tape (*) | - |
| P-IG, AM1, D-J/B, ALT fuse | - | |
| Rain sensor circuit | Rain Sensor Circuit | |
| Rain sensor | RAIN SENSOR | |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS |
HEADLIGHT CLEANER SYSTEM
HEADLIGHT CLEANER SYSTEM
| Symptom | Suspected area | Reference |
|---|---|---|
| Headlight cleaner system does not operate at all | H-IG, AM1, D-J/B, ALT fuse | - |
| Headlight cleaner switch circuit | Headlight Cleaner Switch Circuit | |
| Headlight cleaner motor and relay circuit | Headlight Cleaner Motor and Relay Circuit | |
| Main body ECU LH (Cowl side J/B LH) | CUSTOMIZE PARAMETERS | |
| Engine room No. 2 J/B (Front controller) | CUSTOMIZE PARAMETERS | |
| Headlight cleaner control relay | CUSTOMIZE PARAMETERS |
OTHERS
OTHERS SYMPTOM AND SUSPECTED AREA
| Symptom | Suspected area | Reference |
|---|---|---|
| Washer fluid level warning system does not operate | Washer level warning switch | Washer Fluid Level Warning Switch Circuit |
| Wire Harness or connector | - | |
| Engine room No. 2 J/B (Front controller) | CUSTOMIZE PARAMETERS |