LEXUS PARKING ASSIST-SENSOR SYSTEM TERMINALS OF ECU


  1. CLEARANCE WARNING ECU ASSEMBLY

    A000RKIE04
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    N10-1 (S1) - N10-2 (E1) G - SB Sensor communication signal (Rear corner sensor RH) Power switch on (IG), clearance sonar main switch on, shift lever in R

    Pulse generation

    (See waveform 2)
    N10-2 (E1) - N10-27 (E) SB - W-B Ground for clearance sonar (Rear corner sensor RH) Always Below 1 V
    N10-3 (S2) - N10-4 (E2) LG - L Sensor communication signal (Rear corner sensor LH) Power switch on (IG), clearance sonar main switch on, shift lever in R

    Pulse generation

    (See waveform 2)
    N10-4 (E2) - N10-27 (E) L - W-B Ground for clearance sonar (Rear corner sensor LH) Always Below 1 V
    N10-6 (S3) - N10-7 (E3) W - V Sensor communication signal (Rear center sensor RH) Power switch on (IG), clearance sonar main switch on, shift lever in R

    Pulse generation

    (See waveform 2)
    N10-7 (E3) - N10-27 (E) V - W-B Ground for clearance sonar (Rear center sensor RH) Always Below 1 V
    N10-8 (S4) - N10-9 (E4) B - G Sensor communication signal (Rear center sensor LH) Power switch on (IG), clearance sonar main switch on, shift lever in R

    Pulse generation

    (See waveform 2)
    N10-9 (E4) - N10-27 (E) G - W-B Ground for clearance sonar (Rear center sensor LH) Always Below 1 V
    N10-11 (CBZ) - N10-10 (EF) B - W Clearance warning buzzer signal Buzzer sounding

    Pulse generation

    (See waveform 1)
    N10-12 (IG) - N10-27 (E) LG - W-B IG power source signal Power switch off Below 1 V
    Power switch on (IG) 11 to 14 V
    N10-17 (R1) L CAN communication signal - -
    N10-18 (R2) LG CAN communication signal - -
    N10-19 (S5) - N10-20 (E5) B - W Sensor communication signal (Front corner sensor RH) Power switch on (IG), clearance sonar main switch on, Shift lever in R

    Pulse generation

    (See waveform 2)

    Power switch on (IG), clearance sonar main switch on, shift lever in any position other than P or R


    • Less than approximately 15 km/h (9.3 mph) if vehicle speed is increasing

    • Less than approximately 10 km/h (6.2 mph) if vehicle speed is decreasing
    N10-20 (E5) - N10-27 (E) W - W-B Ground for clearance sonar (Front corner sensor RH) Always Below 1 V
    N10-21 (S6) - N10-22 (E6) L - Y Sensor communication signal (Front corner sensor LH) Power switch on (IG), clearance sonar main switch on, shift lever in R

    Pulse generation

    (See waveform 2)

    Power switch on (IG), clearance sonar main switch on, shift lever in any position other than P or R


    • Less than approximately 15 km/h (9.3 mph) if vehicle speed is increasing

    • Less than approximately 10 km/h (6.2 mph) if vehicle speed is decreasing
    N10-22 (E6) - N10-27 (E) Y - W-B Ground for clearance sonar (Front corner sensor LH) Always Below 1 V
    N10-23 (S7) - N10-24 (E7) P - W Sensor communication signal (Front center sensor RH)

    Power switch on (IG), clearance sonar main switch on, shift lever in any position other than P or R


    • Less than approximately 15 km/h (9.3 mph) if vehicle speed is increasing

    • Less than approximately 10 km/h (6.2 mph) if vehicle speed is decreasing

    Pulse generation

    (See waveform 2)
    N10-24 (E7) - N10-27 (E) W - W-B Ground for clearance sonar (Front center sensor RH) Always Below 1 V
    N10-25 (S8) - N10-26 (E8) R - SB Sensor communication signal (Front center sensor LH)

    Power switch on (IG), clearance sonar main switch on, shift lever in any position other than P or R


    • Less than approximately 15 km/h (9.3 mph) if vehicle speed is increasing

    • Less than approximately 10 km/h (6.2 mph) if vehicle speed is decreasing

    Pulse generation

    (See waveform 2)
    N10-26 (E8) - N10-27 (E) SB - W-B Ground for clearance sonar (Front center sensor LH) Always Below 1 V
    N10-27 (E) - Body ground W-B - Body ground Ground Always Below 1 V
    N10-38 (CLSW) - N10-27 (E) GR - W-B Clearance sonar main switch power source signal Power switch on (IG), clearance sonar main switch on 11 to 14 V
    Power switch on (IG), Clearance sonar main switch off Below 1 V

    1. Using an oscilloscope, check waveform 1.


      1. A000PPGE01

        Waveform 1 (Reference)

        Item Content
        Terminal No. (Symbol) N10-11 (CBZ) - N10-10 (EF)
        Tool Setting 2 V/DIV., 100 μsec./DIV.
        Condition Buzzer sounding

        Tech Tips

        The amplitude of the waveform changes according to the set volume.

    2. Using an oscilloscope, check waveform 2.


      1. A000OCXE01

        Waveform 2 (Reference)

        Item Content
        Terminal No. (Symbol)

        N10-1 (S1) - N10-2 (E1)

        N10-3 (S2) - N10-4 (E2)

        N10-6 (S3) - N10-7 (E3)

        N10-8 (S4) - N10-9 (E4)
        Tool Setting 2 V/DIV., 100 μsec./DIV.
        Condition Power switch on (IG), clearance sonar main switch on, shift lever in R
        Item Content
        Terminal No. (Symbol)

        N10-19 (S5) - N10-20 (E5)

        N10-21 (S6) - N10-22 (E6)
        Tool Setting 2 V/DIV., 100 μsec./DIV.
        Condition Power switch on (IG), clearance sonar main switch on, shift lever in R

        Power switch on (IG), clearance sonar main switch on, shift lever in any position other than P or R


        • Less than approximately 15 km/h (9.3 mph) if vehicle speed is increasing

        • Less than approximately 10 km/h (6.2 mph) if vehicle speed is decreasing
        Item Content
        Terminal No. (Symbol)

        N10-23 (S7) - N10-24 (E7)

        N10-25 (S8) - N10-26 (E8)
        Tool Setting 2 V/DIV., 100 μsec./DIV.
        Condition

        Power switch on (IG), clearance sonar main switch on, shift lever in any position other than P or R


        • Less than approximately 15 km/h (9.3 mph) if vehicle speed is increasing

        • Less than approximately 10 km/h (6.2 mph) if vehicle speed is decreasing