| Last Modified: 11-27-2007 | 1.6 J | |
| Service Category: Vehicle Exterior | Section: Wiper/Washer | |
| Model Year: 2008 | Model: LX570 | Doc ID: RM000002OXI007X |
| Title: WIPER / WASHER: WIPER AND WASHER SYSTEM: DESCRIPTION (2008 LX570) | ||
|
Headlight Cleaner Motor and Relay Circuit |
DESCRIPTION
This circuit provides power to the headlight cleaner control relay.
The headlight cleaner control relay sends the signal from the switch, etc. to the headlight cleaner motor to operate the headlight cleaner system.
WIRING DIAGRAM
INSPECTION PROCEDURE
PROCEDURE
|
1. |
INSPECT FUSE (ECU-IG No. 1, H-LP CLR) |
(a) Remove the ECU-IG No. 1 fuse from the cowl side junction block LH.
(b) Remove the H-LP CLR fuse from the engine relay block.
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
ECU-IG No. 1 fuse |
Always |
Below 1 Ω |
|
H-LP CLR fuse |
|
|
2. |
CHECK HARNESS AND CONNECTOR (HEADLIGHT CLEANER CONTROL RELAY - BATTERY AND BODY GROUND) |
|
(a) Disconnect the relay connector. |
(b) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Switch Condition |
Specified Condition |
|---|---|---|
|
3 (IG) - Body ground |
Engine switch on (IG) |
11 to 14 V |
|
3 (IG) - Body ground |
Engine switch off |
Below 1 V |
(c) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
4 (E) - Body ground |
Always |
Below 1 Ω |
|
|
3. |
INSPECT HEADLIGHT CLEANER MOTOR AND PUMP ASSEMBLY |
|
(a) Remove the headlight cleaner motor
|
(b) Apply battery voltage to the headlight cleaner motor connector and check the operation of the headlight cleaner motor.
OK:
|
Measurement Condition |
Specified Condition |
|---|---|
|
Battery positive (+) → Terminal 1 Battery negative (-) → Terminal 2 |
Headlight cleaner motor operation is normal |
|
|
4. |
CHECK HARNESS AND CONNECTOR (CLEANER MOTOR - CONTROL RELAY AND BATTERY) |
|
(a) Disconnect the cleaner motor connector. |
(b) Disconnect the control relay connector.
(c) Measure the voltage according to the value(s) in the table below.
Standard Voltage:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
1 - Body ground |
Always |
11 to 14 V |
(d) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
|
Tester Connection |
Condition |
Specified Condition |
|---|---|---|
|
2 - 6 (PB) |
Always |
Below 1 Ω |
|
2 - Body ground |
Always |
10 kΩ or higher |
|
|
|