Front Wiper Motor Circuit

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

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.

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

3. 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

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