WIPER AND WASHER SYSTEM TERMINALS OF ECU


  1. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY (for LHD, RHD Light Control Switch LH Side Type)

    A01NFCOE02

    1. Disconnect the F42 windshield wiper switch 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
      F42-1 (EW) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      F42-3 (WIG) - Body ground R - Body ground Power source circuit Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      F42-17 (+B) - Body ground L - Body ground Power source circuit Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V

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

    3. Reconnect the F42 windshield wiper switch 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
      F42-2 (WF) - Body ground B - Body ground Front washer motor circuit Front washer switch on Below 1 V
      Front washer switch off 11 to 14 V
      F42-5 (MPX1) - Body ground V - Body ground Rain sensor signal Power switch on (IG) Pulse generation
      F42-6 (SPD) - Body ground GR - Body ground Speed signal Driving at approx. 20 km/h (12 mph) Pulse generation
      F42-7 (TAIL)*1 - Body ground L - Body ground Light control switch tail position signal circuit Light control switch in tail position 11 to 14 V
      Light control switch off Below 1 V
      F42-8 (+1) - Body ground SB - 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
      F42-9 (+2) - Body ground GR - 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
      F42-18 (+S) - Body ground R - Body ground Front wiper motor operation signal Front wiper motor operates 11 to 14 V
      Front wiper motor off Below 1 V

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

  2. CHECK WINDSHIELD WIPER SWITCH ASSEMBLY (for RHD Light Control Switch RH Side Type)

    A01NFCOE03

    1. Disconnect the F81 windshield wiper switch 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
      F81-7 (WIG) - Body ground R - Body ground Power source circuit Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      F81-9 (EW) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      F81-11 (+B) - Body ground L - Body ground Power source circuit Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V

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

    3. Reconnect the F81 windshield wiper switch 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
      F81-1 (+2) - Body ground GR - 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
      F81-2 (+1) - Body ground SB - 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
      F81-3 (TAIL) - Body ground L - Body ground Light control switch tail position signal circuit Light control switch in tail position 11 to 14 V
      Light control switch off Below 1 V
      F81-4 (SPD) - Body ground GR - Body ground Speed signal Driving at approx. 20 km/h (12 mph) Pulse generation
      F81-5 (MPX1) - Body ground V - Body ground Rain sensor signal Power switch on (IG) Pulse generation
      F81-8 (WF) - Body ground B - Body ground Front washer motor circuit Front washer switch on Below 1 V
      Front washer switch off 11 to 14 V
      F81-10 (+S) - Body ground R - Body ground Front wiper motor operation signal Front wiper motor operates 11 to 14 V
      Front wiper motor off Below 1 V

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

  3. CHECK MAP LIGHT ASSEMBLY (w/ Auto Wiper System)

    A01NDV3E01

    1. Disconnect the T10 map light 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
      T10-26 (IG) - Body ground P - Body ground Power source circuit Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      T10-40 (GND) - Body ground W - 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 T10 map light 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
      T10-24 (IG2) - T10-19 (GND2) G - W-B Power source circuit Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V

      If the result is not as specified, the map light assembly may have a malfunction.

  4. CHECK HEADLIGHT CLEANER CONTROL RELAY


    1. Disconnect the A33 headlight cleaner control relay connector.

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

      A01NGNEE04
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A33-2 (H) - A33-4 (E) W - W-B Headlight cleaner switch operation signal Headlight cleaner switch off 11 to 14 V
      Headlight cleaner switch on Below 1 V
      A33-3 (IG) - A33-4 (E) BR - W-B Power switch on (IG) signal (Power source circuit) Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      A33-4 (E) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      A33-5 (FRWA) - A33-4 (E) P - W-B Front washer switch signal Front washer switch off 11 to 14 V
      Front washer switch on Below 1 V

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

  5. CHECK INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU)

    A01NFY3E01

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F14-20 (HDLO) - Body ground L - Body ground Low beam headlight signal Power switch on (IG), light control switch in head position Below 1 V
      Power switch on (IG), light control switch off 4.2 V or higher