VEHICLE PROXIMITY NOTIFICATION SYSTEM TERMINALS OF ECU


  1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

    B004QU8N05

    1. Disconnect the F2 hybrid vehicle control ECU connector.

    2. Disconnect the F3 hybrid vehicle control ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F2-35(IG2) ←→ Body ground BE - Body ground IG power supply Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      F3-27(BATT) ←→ Body ground GR - Body ground Auxiliary battery power supply Power switch off 11 to 14 V

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

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F2-10(E03) ←→ Body ground W-B - Body ground Ground Always Below 1 Ω
      F2-11(E02) ←→ Body ground W-B - Body ground Ground Always Below 1 Ω
      F2-12(E01) ←→ Body ground W-B - Body ground Ground Always Below 1 Ω

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

    5. Reconnect the F2 hybrid vehicle control ECU connector.

    6. Reconnect the F3 hybrid vehicle control ECU connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A50-19 (SPK+) - A50-9 (SPK-) B - V Vehicle approaching speaker output Vehicle approaching speaker operating

      A waveform synchronized with the sound is output.

      (See Waveform 1)
      F3-9 (KIND) - Body ground L - Body ground Vehicle approaching speaker switch indicator signal output Power switch on (IG), pattern select switch assembly (vehicle approaching speaker switch) ON Below 1.8 V
      Power switch on (IG), pattern select switch assembly (vehicle approaching speaker switch) off 11 to 14 V
      F3-22 (SW) - Body ground G - Body ground Vehicle approaching speaker switch signal input Power switch on (IG), pattern select switch assembly (vehicle approaching speaker switch) off Below 1 V
      Power switch on (IG), pattern select switch assembly (vehicle approaching speaker switch) ON 11 to 14 V

      If the result is not as specified, there is a problem in the hybrid vehicle control ECU or wire harness.


      1. A003PHW

        Waveform 1

        Item Condition
        Tool setting 1 V/DIV., 200 ms./DIV.
        Vehicle condition Vehicle approaching speaker operating