Wiper Switch (HI Speed) Circuit

WIPER AND WASHER: WIPER AND WASHER SYSTEM: Wiper Switch (HI Speed) Circuit
- Wiper Switch (HI Speed) Circuit

DESCRIPTION

The main body ECU LH (cowl side J/B LH) receives a HI position signal from the windshield wiper switch assembly to operate the wiper motor at HI speed.

Even if the ECU malfunctions, this circuit structure enables it to operate the wiper in HI operation mode.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK MAIN BODY ECU LH (COWL SIDE J/B LH)

(a) Measure the voltage according to the value(s) in the table below.





Standard voltage:





NG -- INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (COMBINATION SWITCH ECU)

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE

2. INSPECT WINDSHIELD WIPER SWITCH ASSEMBLY (COMBINATION SWITCH ECU)

(a) Measure the resistance according to the value(s) in the table below.





Standard resistance:





NG -- REPLACE WINDSHIELD WIPER SWITCH ASSEMBLY
OK -- Continue to next step.

3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - BODY GROUND)

(a) Disconnect the J26 windshield wiper switch assembly connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- Continue to next step.

4. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - MAIN BODY ECU LH (COWL SIDE J/B))

(a) Disconnect the Q2 main body ECU LH (cowl side J/B LH) connector.





(b) Measure the resistance according to the value(s) in the table below.

Standard resistance:





NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR

OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE