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

  1. CLEARANCE WARNING ECU ASSEMBLY

    E220917N03

    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 EA66, EC60, EC61, EC65A or EC69