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


  1. CHECK WINDSHIELD WIPER RELAY ASSEMBLY

    A003E1QE07

    1. Disconnect the D60 relay 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
      D60-25 (W) - Body ground W - Body ground Front washer switch circuit Front washer switch on Below 1 Ω
      Front washer switch off 10 kΩ or higher
      D60-8 (VR2) - D60-21 (VR1) Y - W Adjusting ring circuit Windshield wiper switch adjusting ring changed from (+) side to (-) side Below 10 Ω to 2700 Ω
      D60-2 (IG) - Body ground L - Body ground Power source circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      D60-12 (E) - Body ground BR - Body ground Body ground Always Below 1 Ω

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

    3. Reconnect the D60 relay connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D60-10 (+1) - Body ground G - 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
      D60-11 (+2) - Body ground R - 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
      D60-25 (W) - Body ground W - Body ground Front washer motor circuit Front washer switch on Below 1 V
      Front washer switch off 11 to 14 V
      D60-1 (+SM) - Body ground G - Body ground Front wiper motor operation signal Front wiper motor in LO or HI operation 11 to 14 V
      Front wiper motor off Below 1 V
      D60-3 (C1) - D60-15 (CO) SB - L IG signal circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      D60-13 (SIG) - D60-7 (ES) P - LG Power source circuit Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V

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

  2. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK ASSEMBLY)

    A003BMFE01
    A003EA2E01

    1. Disconnect the DB, DE, DF and D80 ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      DB-30 (BECU) - Body ground W - Body ground ECU power supply (from battery) Always 11 to 14 V
      DF-3 (IG) - Body ground W - Body ground IG signal circuit Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      DF-5 (ACC) - Body ground W - Body ground ACC signal circuit Ignition switch off Below 1 V
      Ignition switch ACC 11 to 14 V
      DE-17 (GND1) - Body ground W-B - Body ground Ground circuit Always Below 1 Ω
      D80-4 (GND2) - 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 DB, DE, DF and D80 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
      D81-19 (HDLO) - Body ground* G - Body ground Headlight (LO) operation signal Headlights (LO) not operating Below 1 V
      Headlights (LO) operating 11 to 14 V
      D79-20 (HRLY) - Body ground B - Body ground Headlight cleaner switch operation signal Headlight cleaner switch off 11 to 14 V
      Headlight cleaner switch on Below 1 V

      *: for HID Headlight

      If the result is not as specified, the ECU may have a malfunction.

  3. CHECK HEADLIGHT CLEANER CONTROL RELAY

    A003CNPE01

    1. Disconnect the A35 relay connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A35-3 (IG) - Body ground G - Body ground IG signal circuit (to IG relay) Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      A35-4 (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 A35 relay connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A35-1 (HDLO) - Body ground* G - Body ground Headlight (LO) operation signal Headlights (LO) not operating Below 1 V
      Headlights (LO) operating 11 to 14 V
      A35-2 (H) - Body ground R - Body ground Headlight cleaner switch operation signal Headlight cleaner switch off 11 to 14 V
      Headlight cleaner switch on Below 1 V
      A35-6 (PB) - Body ground W-B - Body ground Headlight cleaner motor operation signal Headlight cleaner motor stopped 11 to 14 V
      Headlight cleaner motor operating Below 1 V
      A35-5 (FRWA) - Body ground* W - Body ground Front washer motor operation signal Front washer switch off 11 to 14 V
      Front washer switch on Below 1 V

      *: for HID Headlight

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