WIPER AND WASHER SYSTEM TERMINALS OF ECU


  1. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY

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    *A for Windshield Wiper Switch (LH Side) *B for Windshield Wiper Switch (RH Side)

    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 Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      N35-7 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      N36-4 (EW) - Body ground*1 W-B - Body ground Ground Always Below 1 Ω
      N36-7 (EW) - Body ground*2 W-B - Body ground Ground Always Below 1 Ω

      • *1: for Windshield Wiper Switch (RH Side)

      • *2: for Windshield Wiper Switch (LH Side)

      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 Power switch on (IG), headlight dimmer switch in off position 11 to 14 V
      Power 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 Power switch on (IG), wiper switch in off position 11 to 14 V
      Power switch on (IG), wiper switch in HI operation position Below 1 V
      N35-5 (RLY1) - Body ground GR - Body ground Windshield wiper relay operation signal Power switch on (IG), wiper switch in off position 11 to 14 V
      Power switch on (IG), wiper switch in LO operation position Below 1 V
      N35-8 (MPX1) - Body ground*1 LG - Body ground LIN communication signal Power 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 Power switch on (IG), wiper switch in off position 11 to 14 V
      Power switch on (IG), wiper switch in LO or HI operation position Below 1 V
      N36-4 (WF) - Body ground*3 B - Body ground Washer motor operation signal Power switch on (IG), washer switch in off position 11 to 14 V
      Power switch on (IG), washer switch in on position Below 1 V
      N36-7 (WF) - Body ground*2 B - Body ground Washer motor operation signal Power switch on (IG), washer switch in off position 11 to 14 V
      Power switch on (IG), washer switch in on position Below 1 V

      • *1: w/ Rain Sensor

      • *2: for Windshield Wiper Switch (RH Side)

      • *3: for Windshield Wiper Switch (LH Side)

  2. 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 (multiplex network 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 - IG power source Power switch on (IG) 11 to 14 V
      A-30 (BECU) - Body ground - Auxiliary battery power source Always 11 to 14 V
      A-29 (ACC) - Body ground - ACC power source Power switch on (ACC) 11 to 14 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω

    4. Install the main body ECU (multiplex network 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 signal Headlight dimmer switch not in head position 11 to 14 V
      Headlight dimmer switch in head position Below 1 V
      5A-59 (ACAN) - Body ground G - Body ground Headlight dimmer switch position signal Power switch on (IG), headlight dimmer switch in neither tail nor head position 11 to 14 V
      Power 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 signal Headlight dimmer switch not in head position 11 to 14 V
      Headlight dimmer switch in head position Below 1 V

  3. CHECK HEADLIGHT ECU SUB-ASSEMBLY RH (w/ Headlight Cleaner System)

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    1. Disconnect the B15 headlight ECU sub-assembly RH connector.

    2. Measure the resistance and voltage on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      B15-4 (IG) - Body ground LG - Body ground Ignition power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      B15-12 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

    3. Reconnect the B15 headlight ECU sub-assembly RH connector.

      Tech Tips

      Since the headlight ECU sub-assembly RH uses a waterproof connector, the voltage and pulses cannot be checked directly. The values listed are for reference only.

    4. Measure the voltage and check of pulses according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      B15-7(HLC) - Body ground G - Body ground Headlight cleaner motor operation signal Power switch on (IG), when low beam headlights turn on, Headlight cleaner motor not operating 11 to 14 V
      Power switch on (IG), when low beam headlights turn on, Headlight cleaner motor operating Below 1 V
      B15-18(FRWA) - Body ground R - Body ground Font washer switch signal Power switch on (IG), front washer switch on 11 to 14 V
      Power switch on (IG), front washer switch off Below 1 V