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Home >> Infiniti >> 2018 >> Q70 5.6 Luxe, RWD >> Repair and Diagnosis >> Accessories & Equipment >> Wiper/Washer Systems >> Wiper & Washer System (Circuit Diagnosis) (Except Hybrid) >> Circuit Diagnosis >> Front Wiper Motor Hi Circuit >> Diagnosis Procedure

Diagnosis Procedure

  1. CHECK FRONT WIPER MOTOR (HI) INPUT VOLTAGE 

    SYMBOL CONSULT ACTIVE TEST

    1. Turn ignition switch ON.
    2. Select "FRONT WIPER" of IPDM E/R active test item.
    3. With operating the test item, check voltage between IPDM E/R harness connector and ground.

    (+)

    (-)

    Condition

    Voltage (Approx.)

    IPDM E/R

    Connector

    Terminal

    E7

    53

    Ground

    FRONT WIPER

    Hi

    0 V

    Is the inspection result normal?

    YES

    GO TO 2.

    NO

    Replace IPDM E/R.

  2. CHECK FRONT WIPER MOTOR (HI) POWER SUPPLY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Remove wiper reverse relay.
    3. Turn ignition switch ON.
    4. Check voltage between wiper reverse relay harness connector and ground.

      Wiper reverse relay

      Ground

      Voltage (Approx.)

      Connector

      Terminal

      E44

      5

      Battery voltage

    Is the inspection result normal?

    YES

    GO TO 3.

    NO

    GO TO 5.

  3. CHECK FRONT WIPER MOTOR (HI) CIRCUIT - 1 
    1. Turn ignition switch OFF.
    2. Disconnect front wiper motor connector.
    3. Check continuity between front wiper motor harness connector and wiper reverse relay harness connector.

    Front wiper motor

    Wiper reverse relay

    Continuity

    Connector

    Terminal

    Connector

    Terminal

    E42

    1

    E44

    3

    Existed

    Is the inspection result normal?

    YES

    GO TO 4.

    NO

    Repair or replace harness.

  4. CHECK FRONT WIPER MOTOR (HI) CIRCUIT - 2 
    1. Disconnect IPDM E/R connector.
    2. Check voltage between Front wiper motor harness connector and IPDM E/R harness connector.

      Front wiper motor

      IPDM E/R

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E42

      2

      E7

      53

      Existed
    3. Check continuity between front wiper motor harness connector and ground.

      Front wiper motor

      Ground

      Continuity

      Connector

      Terminal

      E42

      2

      Not existed

    Is the inspection result normal?

    YES

    Replace front wiper motor.

    NO

    Repair or replace harness.

  5. CHECK WIPER REVERSE RELAY CIRCUIT 
    1. Turn ignition switch OFF.
    2. Disconnect IPDM E/R connector.
    3. Check continuity between IPDM E/R harness connector and wiper reverse relay terminal connector.

      IPDM E/R

      Wiper reverse relay

      Continuity

      Connector

      Terminal

      Connector

      Terminal

      E8

      88

      E44

      5

      Existed
    4. Check continuity between IPDM E/R harness connector and ground.

      IPDM E/R

      Ground

      Continuity

      Connector

      Terminal

      E8

      88

      Not existed

    Is the inspection result normal?

    YES

    Replace IPDM E/R.

    NO

    Repair or replace harness.

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