WIRELESS DOOR LOCK CONTROL SYSTEM (w/ Smart Entry and Start System) TERMINALS OF ECU


  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK)


    1. Disconnect the main body ECU (instrument panel junction block) connectors.

      A017FF8E11

    2. Measure the resistance and voltage between each terminal of the wire harness side connectors and body ground.

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      D6-7 (RCTY) - Body ground GR - Body ground Rear courtesy light switch RH input Rear door RH CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω
      D6-21 (PCTY) - Body ground

      SB - Body ground*1

      		Passenger side courtesy light switch input Passenger side door CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω

      G - Body ground*2

      D6-25 (BCTY) - Body ground L - Body ground Back door courtesy light switch input Back door CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω
      D7-24 (DCTY) - Body ground

      G - Body ground*1

      		Driver side door courtesy light switch input Driver side door CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω

      SB - Body ground*2

      1A-1 (ACC) - Body ground B - Body ground Ignition power supply (ACC signal) Engine switch on (ACC) → off 10 to 14 V → Below 1 V
      1A-1 (IG) - Body ground B - Body ground Ignition power supply (IG signal) Engine switch on (IG) → off 10 to 14 V → Below 1 V
      1D-16 (ALTB) - Body ground W - Body ground +B (power system alternator system) power supply Always 10 to 14 V
      1F-10 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      1M-9 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      1O-7 (LCTY) - Body ground B - Body ground Rear courtesy light switch LH input Rear door LH CLOSED (OFF) → OPEN (ON) 10 kΩ or higher → Below 1 Ω

      Tech Tips


      • *1: for LHD

      • *2: for RHD

      If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the main body (instrument panel Junction block) connectors.

    4. Measure the voltage between each terminal of the wire harness side connectors and body ground.

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      D7-1 (TR+) - Body ground

      LG - Body ground*3

      		Back door opener motor Back door CLOSED (LOCKED) → OPEN (UNLOCKED)

      Below 1 V → 11 to 14 V*1

      D8-4 (HAZ) - Body ground O - Body ground Turn signal flasher relay signal Any transmitter switch is pressed → not pressed

      Below 1 V → 11 to 14 V*2

      Tech Tips


      • *1: When operating the motor.

      • *2: When operating the answer back function.

      • *3: w/o Power Back Door System

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY))

    A017DQOE08

    1. Disconnect the D36 ECU connector.

    2. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      D36-17 (E) - Body ground B - Body ground Ground Always Below 1 Ω
      D36-1 (+B) - D36-17 (E) B - B Battery power supply Always 11 to 14 V
      D36-18 (IG) - D36-17 (E) G - B IG power supply Engine switch on (IG) 11 to 14 V
      Engine switch off Below 1 V

      • If the result is not as specified, there may be a malfunction on the wire harness side.

    3. Reconnect the D36 ECU connector.

    4. Measure the voltage according to the value(s) in the table below.

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      D36-39 (RSSI) - D36-17 (E) B - B Door control receiver output signal Engine switch off, all doors closed and transmitter switch not pressed 11 to 14 V
      Engine switch off, all doors closed and transmitter switch pressed Below 1 V
      D36-38 (RDA) - D36-17 (E) Y - B Door control receiver output signal Engine switch off, all doors closed and transmitter switch not pressed 4.6 to 5.4 V
      Engine switch off, all doors closed and transmitter switch pressed Pulse generation
      D36-29 (RC0) - D36-17 (E) V - B Supply battery to door control receiver Engine switch off, all doors closed and transmitter switch pressed 4.6 to 5.4 V
      D36-21 (BZR) - Body ground R - Body ground Wireless door lock buzzer signal Wireless door lock buzzer OFF → ON Below 1 V → Pulse generation

      • If the result is not as specified, the ECU may have a malfunction.