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Terminals Of Ecu

WARNING: This page is about a different car, the 2007 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK INSTRUMENT PANEL JUNCTION BLOCK (MAIN BODY ECU) 
    Fig 1: Identifying Terminals Of ECU - Instrument Panel Junction Block (Main Body ECU) (1 Of 2)
    G04491008Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 2: Identifying Terminals Of ECU - Instrument Panel Junction Block (Main Body ECU) (2 Of 2)
    G04491009Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the IB and IE junction block connectors.
    2. Measure the voltage and resistance of the wire harness side connectors.
      VOLTAGE AND RESISTANCE SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      BECU (IB-30) - GND1 (IE-17) R - W-B Battery (power supply) Always 10 to 14 V
      GND1 (IE-17) - Body ground W-B - Body ground Ground Always Below 1 Ω
    3. Reconnect the IB and IE junction block connector.
    4. Measure the voltage of the wire harness side connectors.
      VOLTAGE SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ACT+ (IA-3) - Body ground R - Body ground Door lock motor drive lock output Driver side door control switch or passenger side door control switch or driver side door key cylinder OFF Below 1 V
      ACT+ (IA-3) - Body ground R - Body ground Door lock motor drive lock output Driver side door control switch or passenger side door control switch or driver side door key cylinder ON (LOCK) 10 to 14 V --> Below 1 V
      ACT+ (IH-8) - Body ground R - Body ground Door lock motor drive lock output Driver side door control switch or passenger side door control switch or driver side door key cylinder OFF Below 1 V
      ACT+ (IH-8) - Body ground R - Body ground Door lock motor drive lock output Driver side door control switch or passenger side door control switch or driver side door key cylinder ON (LOCK) 10 to 14 V --> Below 1 V
      ACT+ (IH-17) - Body ground R - Body ground Door lock motor drive lock output Driver side door control switch or passenger side door control switch or driver side door key cylinder OFF Below 1 V
      ACT+ (IH-17) - Body ground R - Body ground Door lock motor drive lock output Driver side door control switch or passenger side door control switch or driver side door key cylinder ON (LOCK) 10 to 14 V --> Below 1 V
      ACT- (IA-4) - Body ground BR-Body ground Door lock motor drive unlock output Driver side door control switch or passenger side door control switch or driver side door key cylinder OFF Below 1 V
      ACT- (IA-4) - Body ground BR - Body ground Door lock motor drive unlock output Driver side door control switch or passenger side door control switch or driver side door key cylinder ON (UNLOCK) 10 to 14 V --> Below 1 V
      ACT- (IH-18) - Body ground B - Body ground Door lock motor drive unlock output Driver side door control switch or passenger side door control switch or driver side door key cylinder OFF Below 1 V
      ACT- (IH-18) - Body ground B - Body ground Door lock motor drive unlock output Driver side door control switch or passenger side door control switch or driver side door key cylinder ON (UNLOCK) 10 to 14 V --> Below 1 V
      KSW (IE-26) - Body ground L-Body ground Key unlock warning switch input Key is inserted in ignition key cylinder Below 1 V
      KSW (IE-26) - Body ground L-Body ground Key unlock warning switch input No key is in ignition key cylinder 10 to 14 V
      UL1 (IH-5) - Body ground B - Body ground Driver side manual unlock switch input Driver side door control switch OFF Below 1 V
      UL1 (IH-5) - Body ground B - Body ground Driver side manual unlock switch input Driver side door control switch ON (UNLOCK) 10 to 14 V --> Below 1 V
      UL1 (IH-14) - Body ground O - Body ground Passenger side manual unlock switch input Passenger side door control switch OFF Below 1 V
      UL1 (IH-14) - Body ground O - Body ground Passenger side manual unlock switch input Passenger side door control switch ON (UNLOCK) 10 to 14 V --> Below 1 V
      L1 (IH-4) - Body ground P - Body ground Driver side manual lock switch input Driver side door control switch OFF Below 1 V
      L1 (IH-4) - Body ground P - Body ground Driver side manual lock switch input Driver side door control switch ON (LOCK) 10 to 14 V --> Below 1 V
      L1 (IH-13) - Body ground V - Body ground Passenger side manual lock switch input Passenger side door control switch OFF Below 1 V
      L1 (IH-13) - Body ground V - Body ground Passenger side manual lock switch input Passenger side door control switch ON (LOCK) 10 to 14 V --> Below 1 V
      L2 (IH-7) - Body ground SB - Body ground Driver side Key-linked operated lock switch input Driver side door key cylinder OFF Below 1 V
      L2 (IH-7) - Body ground SB - Body ground Driver side Key-linked operated lock switch input Driver side door key cylinder ON (LOCK) 10 to 14 V --> Below 1 V
      PCTY (IC-14) - Body ground BR - Body ground Passenger door courtesy switch input Passenger side door closed 10 to 14 V
      PCTY (IC-14) - Body ground BR - Body ground Passenger door courtesy switch input Passenger side door open Below 1 V
      RRCY (ID-7) - Body ground LC - Body ground Rear door courtesy switch LH input Rear RH door closed 10 to 14 V
      RRCY (ID-7) - Body ground LC - Body ground Rear door courtesy switch LH input Rear RH door open Below 1 V
      BCTY (IA-7) - Body ground LG - Body ground Back door courtesy switch input Back door closed 10 to 14 V
      BCTY (IA-7) - Body ground LG - Body ground Back door courtesy switch input Back door open Below 1 V
      DCTY (IA-21) - Body ground W - Body ground Driver side door courtesy switch input Driver side door open 10 to 14 V
      DCTY (IA-21) - Body ground W - Body ground Driver side door courtesy switch input Driver side door closed Below 1 V
      DCTY (IC-6) - Body ground BR - Body ground Driver side door courtesy switch input Driver side door open 10 to 14 V
      DCTY (IC-6) - Body ground BR - Body ground Driver side door courtesy switch input Driver side door closed Below 1 V
      ACTD (E15-5) - Body ground B - Body ground Driver side door unlock motor drive Driver side door control switch or door control switch or driver side door key cylinder OFF Below 1 V
      ACTD (E15-5) - Body ground B - Body ground Driver side door unlock motor drive Driver side door control switch or door control switch or driver side door key cylinder ON (UNLOCK) 10 to 14 V --> Below 1 V
      LSWP (E15-10) - Body ground Y - Body ground Passenger side door lock position switch input Passenger side door UNLOCK 10 to 14 V
      LSWP (E15-10) - Body ground Y - Body ground Passenger side door lock position switch input Passenger side door LOCK Below 1 V
      UL3 (E15-9) - Body ground LG - Body ground Driver side door key-linked operated door unlock switch input Driver side door key cylinder OFF Below 1 V
      UL3 (E15-9) - Body ground LG - Body ground Driver side door key-linked operated door unlock switch input Driver side door key cylinder ON (LOCK) 10 to 14 V --> Below 1 V
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