WIPER AND WASHER SYSTEM > Power Source Circuit

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DESCRIPTION

This circuit provides power to operate the windshield wiper relay assembly.

WIRING DIAGRAM


C110669E01


INSPECTION PROCEDURE

1.INSPECT FUSE

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

    1. Measure the resistance between each terminal.

      Standard resistance:
      Below 1Ω



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


2.INSPECT RELAY


    E064835

  1. Inspect IG1 relay continuity.

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

      Standard resistance:
      Terminal No.
      		Specified Condition
      3 - 5
      		10 kΩ or higher
      Below 1 Ω
      (When battery voltage is applied to terminals 1 and 2)



NG
REPLACE RELAY
OK


3.CHECK HARNESS AND CONNECTOR (AUTO WIPER ECU - BODY GROUND)


    I036784E02

  1. Disconnect the connector from the auto wiper ECU.

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

    Standard resistance:
    Tester Connecting
    		Condition
    		Specified Condition
    E - Body ground
    		Always
    		Below 1 Ω



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


4.INSPECT WINDSHIELD WIPER RELAY ASSEMBLY (POWER SOURCE CIRCUIT)


    I036784E03

  1. Disconnect the connector from the auto wiper ECU.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    +B - Body ground
    		Always
    		10 to 14V



NG
REPAIR OR REPLACE HARNESS OR CONNECTOR
OK


5.INSPECT WINDSHIELD WIPER RELAY ASSEMBLY


    I036783E01

  1. Disconnect the connector from the auto wiper ECU.

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

    Standard voltage:
    Tester Connection
    		Condition
    		Specified Condition
    WIG - Body ground
    		Ignition Switch
    OFF → ON
    		Below 1 V → 10 to 14 V



NG
Go to step 6
OK

PROCEED TO NEXT CIRCUIT INSPECTION SHOWN ON PROBLEM SYMPTOMS TABLE 

6.INSPECT IGNITION SWITCH


    E068971E02

  1. Disconnect the connector from the ignition switch.

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

    Standard resistance:
    Tester connection
    		Condition
    		Specified value
    AM1 - IG1
    		Ignition switch
    OFF→ON
    		10 kΩ or higher → Below 1 Ω



NG
REPLACE IGNITION SWITCH
OK

REPAIR OR REPLACE HARNESS OR CONNECTOR