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Terminals Of Ecu

  1. CHECK MAIN BODY ECU (INSTRUMENT PANEL JUNCTION BLOCK) 
    1. Disconnect the 2A, 2B, 2E, 2F, 2G and 2H junction block connectors.
      Fig 1: Identifying 2A, 2B, 2E, 2F, 2G And 2H Junction Block Connectors
      G06011141Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the E63 ECU connector.
      Fig 2: Identifying E63 ECU Connector
      G06036315Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Measure the voltage and resistance according to the value(s) in the table below.
      CONNECTOR TERMINAL REFERENCE

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2A-21 (DCTY) - Body ground V - Body ground Driver door courtesy switch Driver door CLOSED 10 kΩ or higher
      2A-21 (DCTY) - Body ground V - Body ground Driver door courtesy switch Driver door OPEN Below 1 Ω
      2E-19 (RCTY) - Body ground Y - Body ground Rear right door courtesy switch input Rear right door CLOSED 10 kΩ or higher
      2E-19 (RCTY) - Body ground Y - Body ground Rear right door courtesy switch input Rear right door OPEN Below 1 Ω
      2E-20 (PCTY) - Body ground BE - Body ground Front passenger door courtesy switch input Front passenger door CLOSED 10 kΩ or higher
      2E-20 (PCTY) - Body ground BE - Body ground Front passenger door courtesy switch input Front passenger door OPEN Below 1 Ω
      E63-13 (LCTY) - Body ground B - Body ground Rear left door courtesy switch input Rear left door CLOSED 10 kΩ or higher
      E63-13 (LCTY) - Body ground B - Body ground Rear left door courtesy switch input Rear left door OPEN Below 1 Ω
      2G-1 (ALTB) - Body ground W - Body ground +B power supply Always 11 to 14 V
      2E-17 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      2F-5 (ACC) - Body ground L - Body ground ACC power supply Ignition switch ON (ACC) 11 to 14 V
      2F-5 (ACC) - Body ground L - Body ground ACC power supply Ignition switch off Below 1 V
      2H-4 (L1) - Body ground V - Body ground Driver door control switch LOCK input Driver door control switch OFF 10 kΩ or higher
      2H-4 (L1) - Body ground V - Body ground Driver door control switch LOCK input Driver door control switch LOCK Below 1 Ω
      2H-5 (UL1) - Body ground BE - Body ground Driver door control switch UNLOCK input Driver door control switch OFF 10 kΩ or higher
      2H-5 (UL1) - Body ground BE - Body ground Driver door control switch UNLOCK input Driver door control switch UNLOCK Below 1 Ω
      2H-13 (L1) - Body ground V - Body ground Front passenger door control switch LOCK input Front passenger door control switch OFF 10 kΩ or higher
      2H-13 (L1) - Body ground V - Body ground Front passenger door control switch LOCK input Front passenger door control switch LOCK Below 1 Ω
      2H-14 (UL1) - Body ground BE - Body ground Front passenger door control switch UNLOCK input Front passenger door control switch OFF 10 kΩ or higher
      2H-14 (UL1) - Body ground BE - Body ground Front passenger door control switch UNLOCK input Front passenger door control switch UNLOCK Below 1 Ω
      2B-30 (BECU) - Body ground W - Body ground +B (BECU) power supply Always 11 to 14 V
      2A-7 (BCTY) - Body ground LG - Body ground Back door courtesy switch signal input Back door CLOSED 10 kΩ or higher
      2A-7 (BCTY) - Body ground LG - Body ground Back door courtesy switch signal input Back door OPEN Below 1 Ω
      2E-23 (KSW) - Body ground L - Body ground Unlock warning switch signal input No key is in ignition key cylinder 10 kΩ or higher
      2E-23 (KSW) - Body ground L - Body ground Unlock warning switch signal input Key is in ignition key cylinder Below 1 Ω

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

    4. Reconnect the ECU and junction block connectors.
    5. Measure the voltage according to the value(s) in the table below.
      CONNECTOR TERMINAL REFERENCE

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E63-14 (UL3) - Body ground P - Body ground Driver door key-linked door unlock switch Driver door key cylinder is turned to LOCK with key Below 1 V
      E63-14 (UL3) - Body ground P - Body ground Driver door key-linked door unlock switch Driver door key cylinder is turned to UNLOCK with key 11 to 14 V (or pulse generation)
      2H-7 (L2) - Body ground B - Body ground Driver door key-linked door lock switch Driver door key cylinder is turned to UNLOCK with key Below 1 V
      2H-7 (L2) - Body ground B - Body ground Driver door key-linked door lock switch Driver door key cylinder is turned to LOCK with key 11 to 14 V (or pulse generation)
      2H-8 (ACT+) - Body ground
      2H-17 (ACT+) - Body ground 2A-3 (ACT+) - Body ground      		 BE - Body ground Door lock motor LOCK drive output (All doors) Door control switch (driver or front passenger switch) or driver door key cylinder OFF Below 1 V
      2H-8 (ACT+) - Body ground
      2H-17 (ACT+) - Body ground 2A-3 (ACT+) - Body ground      		 BE - Body ground Door lock motor LOCK drive output (All doors) Door control switch (driver or front passenger switch) or driver door key cylinder LOCK 11 to 14 V
      2H-8 (ACT+) - Body ground
      2H-17 (ACT+) - Body ground 2A-3 (ACT+) - Body ground      		 BE - Body ground Door lock motor LOCK drive output (All doors) Door control switch (driver or front passenger switch) or driver door key cylinder OFF Below 1 V
      2H-9 (ACT-) - Body ground
      2H-18 (ACT-) - Body ground 2A-4 (ACT-) - Body ground      		 G - Body ground Door lock motor UNLOCK drive output (All doors) Door control switch (driver or front passenger switch) or driver door key cylinder OFF Below 1 V
      2H-9 (ACT-) - Body ground
      2H-18 (ACT-) - Body ground 2A-4 (ACT-) - Body ground      		 G - Body ground Door lock motor UNLOCK drive output (All doors) Door control switch (driver or front passenger switch) or driver door key cylinder UNLOCK 11 to 14 V
      2H-9 (ACT-) - Body ground
      2H-18 (ACT-) -Body ground 2A-4 (ACT-) - Body ground      		 G - Body ground Door lock motor UNLOCK drive output (All doors) Door control switch (driver or front passenger switch) or driver door key cylinder OFF Below 1 V
      E63-21 (LSWD) - Body ground Y - Body ground Driver door lock position switch input Driver door UNLOCK Below 1 V
      E63-21 (LSWD) - Body ground Y - Body ground Driver door lock position switch input Driver door LOCK 11 to 14 V (or pulse generation)
      E63-5 (LSWP) - Body ground R - Body ground Front passenger door lock position switch input Front passenger door UNLOCK Below 1 V
      E63-5 (LSWP) - Body ground R - Body ground Front passenger door lock position switch input Front passenger door LOCK 11 to 14 V (or pulse generation)

      If the result is not as specified, the main body ECU (instrument panel junction block) may have a malfunction.

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