TOYOTA PARKING ASSIST-SENSOR SYSTEM(for Sedan with Simple Intelligent Parking Assist System) TERMINALS OF ECU


  1. CLEARANCE WARNING ECU ASSEMBLY

    A01LZPWN03

    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 Ignition switch ON, back sonar or clearance sonar switch assembly off Below 1 V
      Ignition switch ON, back sonar or clearance sonar switch assembly on 11 to 14 V
      E98-18 (IG) - E98-16 (E)

      SB - BR*1

      L - BR*2

      		 IG power source signal Ignition switch off Below 1 V
      Ignition switch ON

      11 to 14 V*1

      9.5 to 14 V*2
      E98-16 (E) - Body ground BR - Body ground Ground Always Below 1 Ω

      • *1: w/o Stop and Start System

      • *2: w/ Stop and Start System

    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) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-3 (S1) - E98-16 (E) P - BR Sensor communication signal (rear corner RH) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-4 (BOR) - E98-16 (E) L - BR Power source for rear sensor circuit Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R 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) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-8 (S7) - E98-16 (E) R - BR Sensor communication signal (front center RH) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-9 (S5) - E98-16 (E) B - BR Sensor communication signal (front corner RH) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R 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) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-21 (S2) - E98-16 (E) V - BR Sensor communication signal (rear corner LH) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-23 (BOF) - E98-16 (E) Y - BR Power source for front sensor circuit Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R 7.5 to 14 V
      E98-24 (S10) - E98-16 (E) P - BR Sensor communication signal (front side LH) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-25 (S8) - E98-16 (E) W - BR Sensor communication signal (front center LH) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-26 (S6) - E98-16 (E) G - BR Sensor communication signal (front corner LH) Ignition switch ON, back sonar or clearance sonar switch assembly on, shift lever in R Pulse generation
      E98-27 (E5) - E98-16 (E) L - BR Ground for front sensor circuit Always Below 1 V
      E98-32 (RL) - E98-16 (E)*1 R - BR Reverse signal Ignition switch ON, shift lever is in any position other than R Below 1 V
      Ignition switch ON, shift lever in R 11 to 14 V

      • *1: for EC60, EC61, EC65A or EC69