VEHICLE PROXIMITY NOTIFICATION SYSTEM TERMINALS OF ECU

  1. CHECK VEHICLE APPROACHING SPEAKER CONTROLLER

    1. E251028N06

      Disconnect the N39 vehicle approaching speaker controller 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

      N39-1 (IG) - Body ground

      L - Body ground

      IG power supply

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V

      N39-7 (GND) - Body ground

      W-B - Body ground

      Ground

      Always

      Below 1 Ω

    3. Reconnect the N39 vehicle approaching speaker controller connector.

    4. 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

      N39-2 (STP) - N39-7 (GND)

      Y - 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

      N39-3 (SP+) - N39-8 (SP-)

      P - R

      Vehicle approaching speaker output

      Vehicle approaching speaker operating

      A waveform synchronized with the sound is output.

      N39-5 (SW) - N39-7 (GND)*

      SB - W-B

      Vehicle approaching speaker switch signal

      Power switch on (IG), vehicle approaching speaker switch on

      6 V or higher

      Power switch on (IG), vehicle approaching speaker switch off

      Below 1 V

      N39-6 (SPD) - N39-7 (GND)

      V - W-B

      Speed signal input

      Driving at approximately 20 km/h (12 mph)

      Pulse generation

      (See Waveform 1)

      N39-9 (PRST) - N39-7 (GND)

      LG - W-B

      SIL communication signal

      Power switch on (IG), during transmission

      Pulse generation

      (See Waveform 2)

      N39-10 (IND) - N39-7 (GND)*

      W - W-B

      No. 2 combination switch assembly (vehicle approaching speaker switch) indicator signal

      Power switch on (IG), vehicle approaching speaker switch on

      Below 2.8 V

      Power switch on (IG), vehicle approaching speaker switch off

      11 to 14 V

      N39-11 (KOK) - N39-7 (GND)

      G - 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

      • *: w/ Vehicle Approaching Speaker Switch

      1. E267248N04

        Waveform 1

        Item

        Condition

        Tester Connection

        N39-6 (SPD) - N39-7 (GND)

        Tool setting

        5 V/DIV., 20 ms./DIV.

        Vehicle condition

        Driving at approximately 20 km/h (12 mph)
        Tip:

        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.

      2. E288729N02

        Waveform 2

        Item

        Condition

        Tester Connection

        N39-9 (PRST) - N39-7 (GND)

        Tool setting

        5 V/DIV., 10 ms./DIV.

        Vehicle condition

        Power switch on (IG), during transmission

  2. CHECK HYBRID VEHICLE CONTROL ECU

    C297329N04

    1. Disconnect the A65, A66 and G193 hybrid vehicle control ECU connectors.

    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

      A65-1 (+B2) - G193-6 (E1)

      W - BR

      IG power supply

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V

      A65-3 (IG2) - G193-6 (E1)

      B - BR

      IG power supply

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V

      A66-4 (+B1) - G193-6 (E1)

      SB - BR

      IG power supply

      Power switch on (IG)

      11 to 14 V

      Power switch off

      Below 1 V

      G193-6 (E1) - Body ground

      BR - Body ground

      Ground

      Always

      Below 1 Ω

    3. Reconnect the A60, A61 and G193 hybrid vehicle control 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

      A65-15 (STP) - G193-6 (E1)

      L - BR

      Stop light switch

      Brake pedal depressed

      11 to 14 V

      Brake pedal released

      0 to 1.5 V

      G193-7 (KOK) - G193-6 (E1)

      G - BR

      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