Terminals Of Ecu [11/2023 - ]

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

1. Remove the main body ECU (multiplex network body ECU) from the power distribution box assembly.

   Refer to REMOVAL [11/2023 - ]

2. Reconnect the power distribution box assembly connectors.
3. Measure the resistance and voltage according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   MB-13 (GND1) - Body ground	Ground	Always	Below 1 Ω
   MB-14 (GND2) - Body ground	Ground	Always	Below 1 Ω
   MB-26 (BECU) - Body ground	Auxiliary battery power supply	Ignition switch off	11 to 14 V
   MB-27 (IGR) - Body ground	Ignition power supply (IG signal)	Ignition switch off	Below 1 V
   		Ignition switch ON	11 to 14 V

4. Install the main body ECU (multiplex network body ECU) to power distribution box assembly.

   Refer to INSTALLATION [11/2023 - ]

5. Measure the voltage and check for pulses according to the value(s) in the table below.

   Terminal No. (Symbol)	Terminal Description	Condition	Specified Condition
   8G-3 (FLCY) - Body ground	Front door courtesy light switch assembly (LH) input	Front door LH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   8C-9 (FRCY) - Body ground	Front door courtesy light switch assembly (RH) input	Front door RH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   8G-26 (LCTY) - Body ground	Rear door courtesy light switch assembly (LH) input	Rear door LH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   8G-1 (RCTY) - Body ground	Rear door courtesy light switch assembly (RH) input	Rear door RH open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   8G-2 (BCTY) - Body ground	Back door courtesy light switch input	Back door open → closed	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   H135-9 (LSFL) - Body ground	Front door LH unlock detection switch input	Front door LH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   H135-3 (LSFR) - Body ground	Front door RH unlock detection switch input	Front door RH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   H135-10 (LSWL) - Body ground	Rear door LH unlock detection switch input	Rear door LH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   H136-23 (LSWR) - Body ground	Rear door RH unlock detection switch input	Rear door RH unlocked → locked	Below 1 V → 11 to 14 V or pulse output (maximum 14 V)*1
   8G-36 (ACT-) - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
   8G-37 (ACT-) - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
   8C-36 (ACT-) - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
   8G-14 (ACT+) - Body ground	Door lock motor lock drive output	Door control switch or driver door key cylinder off → on (lock)	Below 1 V → 11 to 14 V → Below 1 V
   8G-15 (ACT+) - Body ground	Door lock motor lock drive output	Door control switch or driver door key cylinder off → on (lock)	Below 1 V → 11 to 14 V → Below 1 V
   8B-19 (ACT+) - Body ground	Door lock motor lock drive output	Door control switch or driver door key cylinder off → on (lock)	Below 1 V → 11 to 14 V → Below 1 V
   8B-20 (ACTD) - Body ground	Door lock motor unlock drive output	Door control switch or driver door key cylinder off → on (unlock)	Below 1 V → 11 to 14 V → Below 1 V
   8G-39 (TR+) - Body ground*2	Back door lock motor unlock drive output	Back door closed → open	Below 1 V → 11 to 14 V → Below 1 V
   H135-4 (UL3) - Body ground	Driver door key-linked unlock input	Driver door key cylinder in neutral position → on (unlock)	Pulse generation → Below 1 V
   H135-28 (L2) - Body ground	Driver door key-linked lock input	Driver door key cylinder in neutral position → on (lock)	Pulse generation → Below 1 V
   H136-6 (L1) - Body ground	Door control switch assembly input	Door control switch assembly off → on (lock)	Pulse generation → Below 1 V
   H136-7 (UL1) - Body ground	Door control switch assembly input	Door control switch assembly off → on (unlock)	Pulse generation → Below 1 V
   8C-43 (GSW) - Body ground	Airbag ECU signal (collision detection signal)	Ignition switch ON with airbag ECU assembly connector disconnected	4.3 to 5.5 V

   1. *1: Differs depending on the vehicle model
   2. *2: w/o Power Back Door System

Refer to TERMINALS OF ECU [11/2023 - ]

Refer to TERMINALS OF ECU [11/2023 - ]