| Last Modified: 7-3-2017 | 6.8:8.0.40 | Doc ID: RM0000018IA001X |
| Model Year Start: 2007 | Model: LX470 | Prod Date Range: [08/2006 - ] |
| Title: WIPER AND WASHER: WIPER AND WASHER SYSTEM: PROBLEM SYMPTOMS TABLE; 2007 MY LX470 [08/2006 - ] | ||
PROBLEM SYMPTOMS TABLE
HINT:
Use the table below to help determine the causes 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 area in the order they are listed. Replace parts as necessary.
Wiper and washer system
|
Symptom |
Suspected area |
See page |
|---|---|---|
|
Front wiper and washer does not operate |
1. WIPER fuse |
- |
|
2. Wiper switch |
|
|
|
3. Wiper motor |
|
|
|
4. Wire harness |
- |
|
|
5. Auto wiper ECU (wiper control ECU) |
- |
|
|
Front wiper does not operate in LO or HI |
1. Wiper switch |
|
|
2. Wiper motor |
|
|
|
3. Wire harness |
- |
|
|
4. Auto wiper ECU (wiper control ECU) |
- |
|
|
Front wiper does not operate in INT |
1. Wiper switch |
|
|
2. Wiper motor |
|
|
|
3. Wire harness |
- |
|
|
4. Auto wiper ECU (wiper control ECU) |
- |
|
|
Front wiper does not operate in AUTO |
1. Wiper switch |
|
|
2. Rain sensor |
- |
|
|
3. Wire harness |
- |
|
|
4. Auto wiper ECU (wiper control ECU) |
- |
|
|
Front washer motor does not operate |
1. WIPER fuse |
- |
|
2. Wiper switch |
|
|
|
3. Wiper motor |
|
|
|
4. Wire harness |
- |
|
|
Front wiper does not operate when washer switch is ON |
1. WIPER fuse |
- |
|
2. Wiper switch |
|
|
|
3. Wiper motor |
|
|
|
4. Wire harness |
- |
|
|
Rear wiper does not operate |
1. RR WIPER Fuse |
- |
|
2. Rear wiper switch |
|
|
|
3. Rear wiper motor |
|
|
|
4. Back door courtesy switch |
|
|
|
5. Wire harness |
- |
|
|
6. Sub body ECU |
- |
|
|
Rear wiper does not operate in INT or ON position |
1. Rear wiper switch |
|
|
2. Wire harness |
- |
|
|
3. Sub body ECU |
- |
|
|
Rear wiper does not operate in OFF position |
1. Rear wiper switch |
|
|
2. Wire harness |
- |
|
|
Rear washer motor does not operate |
1. Rear washer motor |
|
|
2. Rear washer switch |
|
|
|
3. Wire harness |
- |
|
|
Washer fluid does not operate |
Washer hose and nozzle |
- |
|
Rear wiper system does not operate |
1. Door courtesy switch circuit (back door) |
|
|
2. ECU Power source circuit |
|
|
|
3. Rear wiper switch circuit |
|
|
|
4. Rear washer switch circuit |
|
|
|
5. Sub body ECU |
- |
|
|
Rear washer linked function does not operate |
1. Rear wiper switch circuit |
|
|
2. Sub body ECU |
- |
|
|
Vehicle speed switching function does not operate |
1. Door courtesy switch circuit (back door) |
|
|
2. Speed sensor circuit |
|
|
|
3. Body ECU (main) |
- |
|
|
4. Sub body ECU |
- |
|
|
Reverse linked function does not operate |
1. Door courtesy switch circuit (back door) |
|
|
2. Reverse signal circuit |
|
|
|
3. Wiper signal circuit |
|
|
|
4. Sub body ECU |
- |
![2007 MY LX470 [08/2006 - ]; WIPER AND WASHER: WIPER SWITCH: INSPECTION](../../../../stylegraphics/info.gif "2007 MY LX470 [08/2006 - ]; WIPER AND WASHER: WIPER SWITCH: INSPECTION")
Rain sensor system
|
Symptom |
Suspected area |
See page |
|---|---|---|
|
Auto wiper system does not operate (all function) |
1. Front wiper switch |
|
|
2. Front wiper switch circuit |
|
|
|
3. ECU power source circuit |
|
|
|
4. IG switch circuit |
|
|
|
5. Front wiper motor circuit |
|
|
|
6. Front wiper motor |
|
|
|
7. Auto wiper ECU (wiper control ECU) |
- |
|
|
Raindrop sensing function does not operate (when the position is in AUTO, the system becomes vehicle speed-sensing adjustable interval INT function) |
1. Rain sensor circuit |
|
|
2. Rain sensor |
- |
|
|
3. Auto wiper ECU (wiper control ECU) |
- |
|
|
Washer-linked wiper with drip-preventive function does not operate |
1. Front wiper switch (front washer switch) |
|
|
2. Front washer switch circuit |
|
|
|
3. Auto wiper ECU (wiper control ECU) |
- |
|
|