WIPER AND WASHER SYSTEM TERMINALS OF ECU


  1. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY

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    *A for LH Side Type *B for RH Side Type

    1. Disconnect the N35 and N36 windshield wiper switch assembly 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
      N35-2 (+B) - Body ground SB - Body ground IG power source Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      N35-3 (TAIL) - Body ground*1 G - Body ground Headlight dimmer switch position signal Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      N35-4 (RLY2) - Body ground P - Body ground INT relay operation signal Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      N35-5 (RLY1) - Body ground GR - Body ground Windshield wiper relay operation signal Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      N35-7 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N36-4 (EW) - Body ground*2 W-B - Body ground Ground Always Below 1 Ω
      N36-7 (EW) - Body ground*3 W-B - Body ground Ground Always Below 1 Ω

      • *1: w/ Rain Sensor

      • *2: for RH Side Type

      • *3: for LH Side Type

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

    3. Reconnect the N35 and N36 windshield wiper switch assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N35-3 (TAIL) - Body ground*1 G - Body ground Headlight dimmer switch position signal Engine switch on (IG), headlight dimmer switch in neither tail nor head position 11 to 14 V
      Engine switch on (IG), headlight dimmer switch in tail or head position Below 1 V
      N35-4 (RLY2) - Body ground P - Body ground INT relay operation signal Engine switch on (IG), wiper motor off 11 to 14 V
      Engine switch on (IG), wiper motor in LO operation Below 1 V
      N35-5 (RLY1) - Body ground GR - Body ground Windshield wiper relay operation signal Engine switch on (IG), wiper motor off 11 to 14 V
      Engine switch on (IG), wiper motor in HI operation Below 1 V
      N35-8 (MPX1) - Body ground*1 LG - Body ground LIN communication signal Engine switch on (IG) Pulse generation
      N35-10 (CSS+) - N35-9 (CSS-) L - LG Vehicle speed signal Driving at approximately 20 km/h (12 mph) Pulse generation
      N35-20 (+S) - Body ground Y - Body ground Wiper motor operation signal Engine switch on (IG), wiper motor off 11 to 14 V
      Engine switch on (IG), wiper motor operates Below 1 V
      N36-4 (WF) - Body ground*3 B - Body ground Washer motor operation signal Engine switch on (IG), washer switch off 11 to 14 V
      Engine switch on (IG), washer switch on Below 1 V
      N36-7 (WF) - Body ground*2 B - Body ground Washer motor operation signal Engine switch on (IG), washer switch off 11 to 14 V
      Engine switch on (IG), washer switch on Below 1 V

      • *1: w/ Rain Sensor

      • *2: for RH Side Type

      • *3: for LH Side Type

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

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    1. Disconnect the A24 headlight cleaner control relay connector.

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

      Tech Tips

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A24-1 (HDLO) - Body ground Y - Body ground Headlights operation signal Engine switch on (IG), headlight dimmer switch in off position 11 to 14 V
      Engine switch on (IG), headlight dimmer switch in head position Below 1 V
      A24-2 (H) - Body ground B - Body ground Headlight cleaner switch operation signal Engine switch on (IG), headlight dimmer switch in off position and headlight cleaner switch off 11 to 14 V
      Engine switch on (IG), headlight dimmer switch in off position and headlight cleaner switch on Below 1 V
      A24-3 (IG) - Body ground G - Body ground IG power source Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      A24-4 (E) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      A24-5 (FRWA) - Body ground B - Body ground Washer motor operation signal Engine switch on (IG), washer switch off 11 to 14 V
      Engine switch on (IG), washer switch on Below 1 V
      A24-6 (PB) - Body ground G - Body ground Headlight cleaner motor operation signal Headlight cleaner motor stops 11 to 14 V
      Headlight cleaner motor off Below 1 V

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

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

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    *1 Main Body ECU (Multiplex Network Body ECU) - -

    1. Remove the main body ECU from the cowl side junction block LH Click here.

    2. Connect the cowl side junction block LH connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-32 (IG) - Body ground - Ignition power supply Engine switch on (IG) 11 to 14 V
      A-30 (BECU) - Body ground - Battery power supply Always 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Engine switch on (ACC) 11 to 14 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω

    4. Install the main body ECU Click here.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      5A-44 (HRLY) - Body ground GR - Body ground H-LP LO relay drive output Engine switch on (IG), headlight dimmer switch not in head position 11 to 14 V
      Engine switch on (IG), headlight dimmer switch in head position Below 1 V
      5A-59 (ACAN) - Body ground G - Body ground Headlight dimmer switch position signal Engine switch on (IG), headlight dimmer switch in neither tail nor head position 11 to 14 V
      Engine switch on (IG), headlight dimmer switch in tail or head position Below 1 V
      5D-9 (HRLY) - Body ground Y - Body ground H-LP LO relay drive output Engine switch on (IG), headlight dimmer switch not in head position 11 to 14 V
      Engine switch on (IG), headlight dimmer switch in head position Below 1 V