DESCRIPTION
WIRING DIAGRAM
INSPECTION PROCEDURE
PERFORM ACTIVE TEST USING INTELLIGENT TESTER (WASHER MOTOR)
CHECK ENGINE ROOM NO. 2 J/B (FRONT CONTROLLER - ENGINE ROOM NO. 2 J/B, BODY GROUND)
INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY
CHECK HARNESS OR CONNECTOR (FRONT CONTROLLER - BODY GROUND)
WIPER AND WASHER SYSTEM - Washer Motor Circuit
DESCRIPTION
The front controller receives washer switch condition (on or off) information from the windshield wiper switch assembly, and operates the WASH relay.
WIRING DIAGRAM
INSPECTION PROCEDURE
| 1.PERFORM ACTIVE TEST USING INTELLIGENT TESTER (WASHER MOTOR) |
Connect the intelligent tester to the DLC3.
Turn the engine switch on (IG) and turn the intelligent tester main switch on.
Select the item below in the ACTIVE TEST and then check that the washer motor operates.
Body No. 5 (Front Controller):| Item | Test Details | Diagnostic Note |
| Washer Motor Operation | Washer motor operation OFF / ON | - |
- OK:
- Washer motor operates.
| OK | |
| |
| PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE |
|
| 2.CHECK ENGINE ROOM NO. 2 J/B (FRONT CONTROLLER - ENGINE ROOM NO. 2 J/B, BODY GROUND) |
Measure the voltage according to the value(s) in the table below with the connectors connected.
- Standard voltage:
| Tester Connection | Condition | Specified Condition |
| 2E-1 (ALTB) - 2F-1 (E) | Engine switch on (IG) and washer switch ON | 10 to 14 V |
Measure the resistance according to the value(s) in the table below.
- Standard resistance:
| Tester Connection | Condition | Specified Condition |
| 2F-1 (E) - Body ground | Always | Below 1 Ω |
| 3.INSPECT WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY |
Disconnect the washer motor connector.
Connect the positive (+) battery lead to terminal 1 of the washer motor, and the negative (-) battery lead to terminal 2.
- OK:
- Washer motor operates.
| | REPLACE WINDSHIELD WASHER MOTOR AND PUMP ASSEMBLY |
|
|
| OK | |
| |
| REPAIR OR REPLACE HARNESS OR CONNECTOR |
|
| 4.CHECK HARNESS OR CONNECTOR (FRONT CONTROLLER - BODY GROUND) |
Measure the voltage according to the value(s) in the table below.
- Standard voltage:
| Tester Connection | Condition | Specified Condition |
| 2E-1 (ALTB) - Body ground | Always | 10 to 14 V |
| | REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT CONTROLLER - BODY GROUND) |
|
|
| OK | |
| |
| REPAIR OR REPLACE HARNESS OR CONNECTOR (FRONT CONTROLLER - BATTERY) |
|
LEXUS IS250, IS220d / GSE20 ALE20
