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


  1. CHECK WINDSHIELD WIPER RELAY ASSEMBLY

    A0118D4E06

    1. Disconnect the D41 windshield wiper relay assembly 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
      D41-4 (W) - Body ground Y - Body ground Front washer switch circuit Front washer switch on Below 1 Ω
      Front washer switch off 10 kΩ or higher
      D41-6 (VR2) - D41-7 (VR1) BR - W Adjusting volume circuit Windshield wiper switch adjusting ring changed from (+) side to (-) side 0 to 2.7 kΩ
      D41-8 (SIG) - Body ground P - Body ground Power source circuit Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      D41-12 (IG) - Body ground P - Body ground Power source circuit Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      D41-23 (WIG) - Body ground LG - Body ground Power source circuit Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      D41-26 (E) - Body ground W-B - Body ground Body ground Always Below 1 Ω

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

    3. Reconnect the D41 windshield wiper relay assembly connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D41-1 (+2S) - Body ground Y - Body ground Front wiper LO speed signal circuit Engine switch on (IG), front wiper switch LO 11 to 14 V
      Engine switch on (IG), front wiper switch except LO Below 1 V
      D41-2 (+1) - Body ground B - Body ground Front wiper motor LO speed signal circuit Front wiper motor in LO operation 11 to 14 V
      Front wiper motor off Below 1 V
      D41-3 (+2) - Body ground SB - Body ground Front wiper motor HI speed signal circuit Front wiper motor in HI operation 11 to 14 V
      Front wiper motor off Below 1 V
      D41-4 (W) - Body ground Y - Body ground Front washer motor circuit Front washer switch on Below 1 V
      Front washer switch off 11 to 14 V
      D41-10 (+SM) - Body ground GR - Body ground Front wiper motor operation signal Front wiper motor is in LO or HI operation 11 to 14 V
      Front wiper motor off Below 1 V
      D41-11 (+SSW) - Body ground V - Body ground Front wiper motor operation signal Engine switch on (IG), front wiper switch off or in AUTO, front wiper motor operates 11 to 14 V
      Front wiper motor off Below 1 V
      D41-14 (PA1) - Body ground V - Body ground Rain sensor signal Engine switch on (IG) Pulse generation
      D41-17 (C1) - D41-16 (CO) L - G IG signal circuit Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V
      D41-18 (TAIL) - Body ground GR - Body ground

      Light control

      Switch TAIL

      Signal input

      		 - -
      D41-19 (SPD) - Body ground LG - Body ground Speed signal Driving at approx. 20 km/h (12 mph) Pulse generation

      If the result is not as specified, the windshield wiper relay assembly may have a malfunction.