Wiper Switch (HI Speed) Circuit

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

Wiper Switch (HI Speed) Circuit

DESCRIPTION

The front controller receives the HI position signal of the wiper switch to operate the wiper motor at HI speed. Even if the ECU malfunctions, its circuit structure enables it to operate the wiper in HI operation mode.

WIRING DIAGRAM





INSPECTION PROCEDURE

PROCEDURE

1. CHECK FRONT CONTROLLER (2S SIGNAL)




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






NG -- INSPECT WINDSHIELD WIPER SWITCH (COMBINATION SWITCH)
OK -- PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE
2. INSPECT WINDSHIELD WIPER SWITCH (COMBINATION SWITCH)




(a) Disconnect or remove the switch Removal.
(b) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPLACE WINDSHIELD WIPER SWITCH
OK -- Continue to next step.
3. CHECK HARNESS AND CONNECTOR (WINDSHIELD WIPER SWITCH - FRONT CONTROLLER AND BODY GROUND)




(a) Disconnect the L25 switch connector.
(b) Disconnect the A51 ECU connector.
(c) Measure the resistance according to the value(s) in the table below.
Standard resistance:






NG -- REPAIR OR REPLACE HARNESS OR CONNECTOR
OK -- REPLACE FRONT CONTROLLER