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WIPER AND WASHER SYSTEM (w/o Rain Sensor) TERMINALS OF ECU

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  1. A0157W7

    CHECK HEADLIGHT CLEANER CONTROL RELAY (w/ Headlight Cleaner System)

    Tip:

    The headlight cleaner control relay uses waterproof connector. Therefore, voltage cannot be checked with the connector connected to the vehicle.

    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    3 (IG) - 4 (E) - IG signal circuit Ignition switch off Below 1 V
    Ignition switch ON 11 to 14 V
    4 (E) - Body ground - Ground circuit Always Below 1 Ω
    6 (PB) - 4 (E) - Headlight cleaner motor operation signal Headlight cleaner motor is stopped 11 to 14 V
    Headlight cleaner motor is operating Below 1 V
    2 (H) - 4 (E) - Headlight cleaner switch and headlight switch operation signal

    Ignition switch ON

    Headlight cleaner switch is off

    		 Below 1 V

    Ignition switch ON

    Headlight switch is off

    		 Below 1 V

    Ignition switch ON

    Headlight cleaner switch is on and headlight dimmer switch in HEAD

    		 11 to 14 V
    5 (FRWA) - 4 (E)* - Front washer switch operation signal

    Ignition switch ON

    Front washer switch is off

    		 11 to 14 V

    Ignition switch ON

    Front washer switch is on

    		 Below 1 V
    1 (HDLO) - 4 (E)* - Headlight low beam operation signal

    Ignition switch ON

    Headlight dimmer switch in HEAD

    		 11 to 14 V

    Ignition switch ON

    Headlight dimmer switch not in HEAD

    		 Below 1 V

    • *: w/ Headlight Auto Leveling

  2. A015DA5E02

    NO. 2 MULTIPLEX NETWORK BODY ECU (w/ Washer Nozzle Heater System)


    1. Disconnect the L50 and L51 No. 2 multiplex network body ECU connectors.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L50-14 (BECU) - Body ground R - Body ground Power source circuit Always 11 to 14 V
      L50-13 (SIG) - Body ground G - Body ground IG signal circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      L50-7 (GND) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω

    3. Reconnect the L50 and L51 No. 2 multiplex network body ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L50-25 (WHTR) - Body ground GR - Body ground Washer nozzle heater signal circuit Ignition switch ON, ambient temperature 6°C (42°F) or higher 11 to 14 V
      Ignition switch ON, ambient temperature 5°C (41°F) or less Below 1 V