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


  1. CHECK WINDSHIELD WIPER ECU

    A015CYXE02

    1. Disconnect the E83 and E85 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
      E83-5 (IG1I) - E85-10 (E) G - W-B IG signal circuit Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      E85-10 (E) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the E83 and E85 ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E83-7 (+SM) - Body ground W - Body ground Front wiper motor operation signal Front wiper is operated 11 to 14 V
      Front wiper is stopped Below 1 V
      E83-8 (WIG) - Body ground B - Body ground Front wiper motor power source circuit Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      E83-10 (1S) - Body ground P - Body ground Front wiper motor power supply circuit Front wiper switch off Below 1 V
      Front wiper switch LO 11 to 14 V
      E83-9 (2S) - Body ground R - Body ground Front wiper motor power supply circuit (HI signal) Front wiper switch off Below 1 V
      Front wiper switch HI 11 to 14 V
      E85-2 (W) - Body ground L - Body ground Front washer motor power source circuit Front washer switch off Below 1 V
      Front washer switch on 11 to 14 V
      E85-5 (CANL) - Body ground R - Body ground CAN communication signal Engine switch on (IG) Pulse generation
      E85-6 (CANH) - Body ground LG - Body ground CAN communication signal Engine switch on (IG) Pulse generation
      E85-7 (MPX1) - Body ground R - Body ground LIN communication signal Engine switch on (IG) Pulse generation

  2. CHECK WINDSHIELD WIPER SWITCH

    A015A61E03

    1. Disconnect the E16 switch connector.

    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
      E16-2 (+B) - E16-10 (E)*1 B - W-B Power source circuit (from battery) Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      E16-3 (+B) - E16-5 (E)*2 B - W-B Power source circuit (from battery) Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      E16-10 (E) - Body ground*1 W-B - Body ground Ground circuit Always Below 1 Ω
      E16-5 (E) - Body ground*2 W-B - Body ground Ground circuit Always Below 1 Ω

      Tech Tips


      • *1: for LH Side

      • *2: for RH Side

  3. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH)

    A01558IE03

    1. Disconnect the 2D, E2 and E1 main 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
      E1-6 (AM1) - 2D-62 (GND2) W - W-B Power source circuit (from battery) Always 11 to 14 V
      E2-11 (IG2D) - 2D-62 (GND2) B - W-B IG signal circuit Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      2B-22 (STP) - 2D-62 (GND2) R - W-B Stop light switch circuit Stop light switch off Below 1 V
      Stop light switch on 11 to 14 V
      2D-62 (GND2) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω

    3. Reconnect the 2D, E2 and E1 main body ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E2-13 (HDLO) - Body ground L - Body ground Headlight low beam operation signal

      Engine switch on (IG)

      Headlight dimmer switch in head

      		 11 to 14 V

      Engine switch on (IG)

      Headlight dimmer switch not in head

      		 Below 1 V
      E3-15 (CANN) - Body ground R - Body ground CAN communication signal Engine switch on (IG) Pulse generation
      E3-16 (CANP) - Body ground GR - Body ground CAN communication signal Engine switch on (IG) Pulse generation

  4. CHECK MAP LIGHT

    A015CETE01

    1. Disconnect the R7 map light connector.

    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
      R7-14 (IG) - R7-3 (GND5) G - W-B IG signal circuit Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      R7-3 (GND5) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω

  5. CHECK RAIN SENSOR

    A0156JDE05

    1. Disconnect the R11 rain sensor connector.

    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
      R11-4 (SIG) - Body ground G - Body ground IG signal circuit Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      R11-1 (ES) - Body ground W - Body ground Ground circuit Always Below 1 Ω

    3. Reconnect the R11 rain sensor connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      R11-3 (MPX) - Body ground R - Body ground LIN communication signal Engine switch on (IG) Pulse generation

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

    A0157W7

    Tech Tips

    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 Engine switch off Below 1 V
    Engine switch on (IG) 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

    Engine switch on (IG)

    Headlight cleaner switch is off

    		 Below 1 V

    Engine switch on (IG)

    Headlight switch is off

    		 Below 1 V

    Engine switch on (IG)

    Headlight cleaner switch is on and headlight dimmer switch in HEAD

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

    Engine switch on (IG)

    Front washer switch is off

    		 11 to 14 V

    Engine switch on (IG)

    Front washer switch is on

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

    Engine switch on (IG)

    Headlight dimmer switch in HEAD

    		 11 to 14 V

    Engine switch on (IG)

    Headlight dimmer switch not in HEAD

    		 Below 1 V

    • *: w/ Headlight Auto Leveling

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

    A015DA5E02

    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 Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 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 Engine switch on (IG), ambient temperature 6°C (42°F) or higher 11 to 14 V
      Engine switch on (IG), ambient temperature 5°C (41°F) or less Below 1 V