WIRELESS DOOR LOCK CONTROL SYSTEM (w/o 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) connector.

      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*1- Body ground

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

      G*2- Body ground
      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*1- Body ground

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

      SB*2- Body ground
      D9-5 (KSW) - Body ground GR - Body ground Unlock warning switch input No key in ignition key cylinder (OFF) → Key inserted (ON) 10 kΩ or higher → Below 1 Ω
      1A-1 (ACC) - Body ground B - Body ground Ignition power supply (ACC signal) Ignition switch ACC → OFF 10 to 14 V → Below 1 V
      1A-1 (IG) - Body ground B - Body ground Ignition power supply (IG signal) Ignition switch ON → 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
      1D-10 (BECU) - Body ground W - Body ground +B power supply Always 10 to 14 V
      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 ECU (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 Back door opener motor input Back door CLOSED (LOCKED) → OPEN (UNLOCKED)

      Below 1 V → 10 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 → Pulse generation*2

      D9-7 (BZR) - Body ground R - Body ground Wireless door lock buzzer Wireless door lock buzzer OFF → ON Below 1 V → 10 to 14 V

      Tech Tips


      • *1: When operating the motor

      • *2: When operating the answer back function