VEHICLE PROXIMITY NOTIFICATION SYSTEM TERMINALS OF ECU


  1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

    A01ODKRN29

    1. Disconnect the O33 vehicle approaching speaker controller connector.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O33-1 (IG) - Body ground R - Body ground IG power supply 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. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O33-7 (GND) - 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.

    4. Reconnect the O33 vehicle approaching speaker controller connector.

    5. 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
      O33-2 (STP) - O33-7 (GND) B - W-B Stop light signal input Power switch off, brake pedal depressed 8 V or higher
      Power switch off, brake pedal released Below 1 V
      O33-3 (SP+) - O33-8 (SP-) P - V Vehicle approaching speaker output Vehicle approaching speaker operating

      A waveform synchronized with the sound is output.

      (See Waveform 1)
      O33-5 (SW) - O33-7 (GND) L - W-B Vehicle approaching speaker switch signal input Power switch on (IG), vehicle approaching speaker switch not pressed Below 1 V
      Power switch on (IG), vehicle approaching speaker switch pressed 6 V or higher
      O33-6 (SPD) - O33-7 (GND) L - W-B Speed signal input Power switch on (IG), wheel being rotated

      Pulse generation

      (See Waveform 2)
      O33-9 (PRST) - O33-7 (GND) W - W-B SIL communication signal Power switch on (IG), during transmission

      Pulse generation

      (See Waveform 3)
      O33-10 (IND) - O33-7 (GND) SB - W-B Warning signal output Approximately 3 seconds after turning power switch on (IG) Below 1.8 V
      O33-11 (KOK) - O33-7 (GND) P - W-B Permission signal Power switch on (READY), shift lever in P Below 2.3 V
      Power switch on (READY), engine stopped and shift lever not in P 8 V or higher

      If the result is not as specified, there is a problem in the vehicle approaching speaker controller or wire harness.


      1. A01OA0L

        Waveform 1

        Item Condition
        Tool setting 1 V/DIV., 200 ms./DIV.
        Vehicle condition Vehicle approaching speaker operating
      2. B004G2ZN03

        Waveform 2

        Item Condition
        Tool setting 5 V/DIV., 20 ms./DIV.
        Vehicle condition Power switch on (IG), wheel being rotated

        Tech Tips

        When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

      3. A01OAAMN02

        Waveform 3

        Item Condition
        Tool setting 5 V/DIV., 10 ms./DIV.
        Vehicle condition Power switch on (IG), during transmission

  2. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY

    A01O9VFN03

    1. Disconnect the A80, A81 and O141 power management control ECU connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A80-1 (+B2) - O141-6 (E1) W - W-B IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      A81-1 (IG2) - O141-6 (E1) W - W-B IG power supply Power switch on (IG) 11 to 14 V
      Power switch off Below 1 V
      A81-3 (+B1) - O141-6 (E1) W - W-B IG power supply 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. Measure the resistance according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O141-6 (E1) - 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.

    4. Reconnect the A80, A81 and O141 hybrid vehicle control ECU assembly connectors.

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      O141-7 (KOK) - O141-6 (E1) R - W-B Permission signal Power switch on (READY), shift lever in P Below 2.3 V
      Power switch on (READY), engine stopped and shift lever not in P 8 V or higher

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