Terminals Of Ecu

1. CHECK MAIN BODY ECU (w/o Smart Key System) 
   1. Disconnect the 2B, 2E, 2F, and 2G instrument junction block connectors.
      Fig 1: Identifying 2B, 2E, 2F, And 2G Instrument Junction Block Connectors (1 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 2: Identifying 2B, 2E, 2F, And 2G Instrument Junction Block Connectors (2 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the voltage and resistance between the wire harness side connectors and body ground.

      Standard Voltage 

      TERMINALS VOLTAGE REFERENCE
      
      

      Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
      2B-30 (BECU) - Body ground	W - Body ground	Battery power supply	Always	11 to 14 V
      2F-5 (ACC) - Body ground	W*1 - Body ground L*2 - Body ground	ACC power supply	Always	11 to 14 V
      2G-1 - Body ground	W - Body ground	Battery power supply	Always	11 to 14 V

      Standard Resistance 

      TERMINALS RESISTANCE REFERENCE
      
      

      Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
      2E-17 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω
      If the result is not as specified, there may be a malfunction on the wire harness side. HINT: *1: for TMC Made *2: for NUMMI, TMMC Made

   3. Reconnect the 2B, 2E, 2F and 2G instrument panel junction block connectors.
   4. Measure the voltage according to the value(s) in the table below.

   Standard Voltage 

   TERMINALS VOLTAGE REFERENCE
   
   

   Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
   2A-7 (BCTY) - Body ground	LG - Body ground	Luggage compartment door courtesy switch Input	Luggage compartment door open	Below 1 V
   			Luggage compartment door closed	11 to 14 V
   2A-21 (DCTY) - Body ground	W*1 - Body ground V*2 - Body ground	Driver side door courtesy switch Input	Driver side door open	Below 1 V
   			Driver side door closed	Pulse generation
   2C-6 (DCTY) - Body ground	W*1 - Body ground R*2 - Body ground	Driver side door courtesy switch Input	Driver side door open	Below 1 V
   			Driver side door closed	Pulse generation
   2E-19 (RCTY) - Body ground	LG*1 - Body ground Y*2 - Body ground	Rear door courtesy switch RH Input	Rear door RH open	Below 1 V
   			Rear door RH closed	Pulse generation
   2E-20 (PCTY) - Body ground	BR*1 - Body ground BE*2 - Body ground	Front passenger side door courtesy switch Input	Front passenger side door open	Below 1 V
   			Front passenger side door closed	Pulse generation
   2K-2 (ILE) - Body ground	W*1 - Body ground GR*2 - Body ground	Interior light drive output	Interior light switch In DOOR position and Interior light ON	Below 1 V
   			Interior light switch In DOOR position and Interior light OFF	11 to 14 V
   E61-5 (LSWP) - Body ground	B*1 - Body ground R*2 - Body ground	Front passenger side door lock position switch Input	Front passenger door unlocked	Below 1 V
   			Front passenger door locked	Pulse generation
   E61-13 (LCTY) - Body ground	SB*1 - Body ground B*2 - Body ground	Rear door courtesy switch LH Input	Rear door LH open	Below 1 V
   			Rear door LH closed	Pulse generation
   E61-21 (LSWD)-Body ground	Y - Body ground	Driver side door lock position switch input	Driver side door unlocked	Below 1 V
   			Driver side door locked	Pulse generation
   E61-24 (LSR) - Body ground	Y*1 - Body ground G*2 - Body ground	Rear door lock position switch input	Rear door LH or RH unlocked	Below 1 V
   			Rear door LH and RH locked	Pulse generation
   If the result is not as specified, the main body ECU (Instrument panel junction block) may have a malfunction. HINT: *1: for TMC Made *2: for NUMMI, TMMC Made

2. CHECK MAIN BODY ECU (w/ Smart Key System) 
   1. Disconnect the 2B, 2E, 2F, and 2G instrument junction block connectors.
      Fig 3: Identifying 2B, 2E, 2F, And 2G Instrument Junction Block Connectors (1 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      Fig 4: Identifying 2B, 2E, 2F, And 2G Instrument Junction Block Connectors (2 Of 2)

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   2. Measure the voltage and resistance between the wire harness side connectors and body ground.

      Standard Voltage 

      TERMINALS VOLTAGE REFERENCE
      
      

      Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
      2B-30 (BECU) - Body ground	W - Body ground	Battery power supply	Always	11 to 14 V
      2F-5 (ACC) - Body ground	W*1 - Body ground L*2 - Body ground	ACC power supply	Always	11 to 14 V
      2G-1 - Body ground	W - Body ground	Battery power supply	Always	11 to 14 V

      Standard Resistance 

      TERMINALS RESISTANCE REFERENCE
      
      

      Terminal No. (Symbol)	Wiring Color	Terminal Description	Condition	Specified Condition
      2E-17 (GND1) - Body ground	W-B - Body ground	Ground	Always	Below 1 Ω

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

   3. Reconnect the 2B, 2E, 2F, 2G and E51 instrument panel junction block connectors.
   4. Measure the voltage according to the value(s) in the table below.

Standard Voltage