WIPER AND WASHER SYSTEM > Front Wiper Motor Circuit

for Preparation Click here


DESCRIPTION

The windshield wiper relay assembly controls the front wiper motor.
Even if the windshield wiper relay assembly is in failure, its circuit structure enables operation of the front wiper.

WIRING DIAGRAM


C110672E01


INSPECTION PROCEDURE

HINT:
Start the inspection from step 1 when using the intelligent tester, and start from step 2 when not using the intelligent tester.

1.PERFORM ACTIVE TEST BY INTELLIGENT TESTER

  1. Connect the intelligent tester to the DLC3.

  1. Turn the ignition switch to the ON position and turn the intelligent tester's main switch ON.

  1. Select the item below in the ACTIVE TEST and then check that the relay operates.

    Wiper: 
    Item
    		Test Details
    		Diagnostic Note
    WIPER MOT (HI)
    		Front wiper motor HI operation ON / OFF
    		-
    WIPER MOT (LO)
    		Front wiper motor LO operation ON / OFF
    		-



NG
Go to step 2
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

2.INSPECT FUSE

  1. Inspect the AM1, FR WIP and INP J/B fuses.

    1. Measure the resistance between each terminal.

      Standard resistance:
      Below 1 Ω



NG
CHECK FOR SHORT IN ALL HARNESS AND COMPONENTS CONNECTED FAILURE FUSE
OK


3.INSPECT WINDSHIELD WIPER RELAY ASSEMBLY


    I036782E01

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    +1 - Body ground
    		Ignition switch ON, Windshield wiper switch OFF → LO
    		Below 1 V → 10 to 14 V
    +2 - Body ground
    		Ignition switch ON, Windshield wiper switch OFF → HI
    		Below 1 V → 10 to 14 V
    +SM - Body ground
    		Ignition switch ON, Windshield wiper in automatic stop position → any position other than automatic stop position
    		Below 1 V → 10 to 14 V



NG
Go to step 4
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN IN PROBLEM SYMPTOMS TABLE 

4.INSPECT WINDSHIELD WIPER MOTOR ASSEMBLY

  1. Inspect the windshield wiper motor assembly (Click here).



NG
REPLACE WINDSHIELD WIPER MOTOR ASSEMBLY
OK

REPAIR OR REPLACE HARNESS AND CONNECTOR