TOYOTA PARKING ASSIST-SENSOR SYSTEM(except Hatchback) TERMINALS OF ECU


  1. CLEARANCE WARNING ECU ASSEMBLY

    A00YNPUN03

    1. Disconnect the E98 clearance warning ECU assembly connector.

    2. Measure the voltage and resistance on the wire harness side connector according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E98-10 (CLSW) - E98-16 (E) P - BR Back sonar or clearance sonar switch assembly power source signal Power switch on (IG), back sonar or clearance sonar switch assembly off Below 1 V
      Power switch on (IG), back sonar or clearance sonar switch assembly on 11 to 14 V
      E98-18 (IG) - E98-16 (E) SB - BR IG power source signal Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      E98-16 (E) - Body ground BR - Body ground Ground Always Below 1 Ω

    3. Reconnect the E98 clearance warning ECU assembly 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
      E98-1 (E1) - E98-16 (E) BR - BR Ground for rear sensor circuit Always Below 1 V
      E98-2 (S3) - E98-16 (E) G - BR Sensor communication signal (rear center RH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-3 (S1) - E98-16 (E) P - BR Sensor communication signal (rear corner RH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-4 (BOR) - E98-16 (E) L - BR Power source for rear sensor circuit Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected 7.5 to 14 V
      E98-5 (ER) - E98-16 (E) W - BR Ground for No. 2 clearance warning buzzer Buzzer not sounding Below 1 V
      E98-6 (EF) - E98-16 (E) L - BR Ground for No. 1 clearance warning buzzer Buzzer not sounding Below 1 V
      E98-7 (S9) - E98-16 (E) V - BR Sensor communication signal (front side RH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-8 (S7) - E98-16 (E) R - BR Sensor communication signal (front center RH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-9 (S5) - E98-16 (E) B - BR Sensor communication signal (front corner RH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-12 (CBZ) - E98-16 (E) B - BR No. 1 clearance warning buzzer signal Buzzer sounding Pulse generation
      E98-13 (BBZ) - E98-16 (E) B - BR No. 2 clearance warning buzzer signal Buzzer sounding Pulse generation
      E98-20 (S4) - E98-16 (E) W - BR Sensor communication signal (rear center LH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-21 (S2) - E98-16 (E) V - BR Sensor communication signal (rear corner LH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-23 (BOF) - E98-16 (E) Y - BR Power source for front sensor circuit Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected 7.5 to 14 V
      E98-24 (S10) - E98-16 (E) P - BR Sensor communication signal (front side LH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-25 (S8) - E98-16 (E) W - BR Sensor communication signal (front center LH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-26 (S6) - E98-16 (E) G - BR Sensor communication signal (front corner LH) Power switch on (IG), back sonar or clearance sonar switch assembly on, reverse (R) selected Pulse generation
      E98-27 (E5) - E98-16 (E) L - BR Ground for front sensor circuit Always Below 1 V