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Terminals Of Ecu

  1. CHECK LUGGAGE ROOM JUNCTION BLOCK (REAR JUNCTION BLOCK ECU) 
    Fig 1: Identifying Luggage Room Junction Block (Rear Junction Block ECU) Connector
    G04944405Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the LA, LD and LG junction block connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      LD-4 (MPXB) - Body ground R - Body ground Battery (ECU power source) Always 11 to 14 V
      LG-1 (BANC) - Body ground W - Body ground Battery (ECU power source) Always 11 to 14 V
      LA-43 (PGND) - 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 LA, LD and LG junction block connectors.
    4. Measure the voltage and resistance according to the value (s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      S61-8 (DBM-) - Body ground Y - Body ground Seat belt anchor motor power Shoulder belt anchorage switch off Below 1 V
      Shoulder belt anchorage down switch on 11 to 14 V
      S61-10 (DBM+) - Body ground L - Body ground Seat belt anchor motor power Shoulder belt anchorage switch off Below 1 V
      Shoulder belt anchorage up switch on 11 to 14 V
      S61-13 (E) - Body ground W - Body ground Ground Always Below 1 Ω
      S61-14 (BES) - Body ground R - Body ground Seat belt anchor motor power Seat belt anchor motor operating Alternating between approximately 8 V and below 1 V
      Seat belt anchor motor not operating Below 1 V
      S61-15 (VC) - Body ground Y - Body ground Battery (seat belt anchor power) Always 11 to 14 V
      S62-3 (PVC) - Body ground Y - Body ground Battery (seat belt anchor power) Always 11 to 14 V
      S62-4 (PBES) - Body ground R - Body ground Seat belt anchor motor power Seat belt anchor motor operating Alternating between approximately 8 V and below 1 V
      Seat belt anchor motor not operating Below 1 V
      S62-27 (PSSE) - Body ground LG - Body ground Ground Always Below 1 Ω
      S62-22 (PBM+) - Body ground V - Body ground Seat belt anchor motor power Shoulder belt anchorage switch off Below 1 V
      Shoulder belt anchorage down switch on 11 to 14 V
      S62-23 (PBM-) - Body ground L - Body ground Seat belt anchor motor power Shoulder belt anchorage switch off Below 1 V
      Shoulder belt anchorage up switch on 11 to 14 V

      If the result is not as specified, the ECU may have a malfunction.

  2. CHECK FRONT DOOR ECU LH 
    Fig 2: Identifying Front Door ECU LH Connector Terminals
    G06188634Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N10 and P10 ECU connectors.
    2. Measure the voltage and resistance according to the value (s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N10-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      P10-29 (MSWE) - N10-1 (GND) V - W-B Ground Always Below 1 Ω
      P10-28 (DSE) - N10-1 (GND) BE - W-B Ground Always Below 1 Ω
      N10-11 (CPUB) - N10-1 (GND) B - W-B Battery (ECU power source) Always 11 to 14 V
      N10-6 (BDR) - N10-1 (GND) BE - W-B Battery (ECU power source) Always 11 to 14 V
      N10-3 (SIG) - N10-1 (GND) L - W-B Engine switch signal Engine switch on (IG) 11 to 14 V
      P10-16 (MM) - P10-29 (MSWE) BE-V Memory switch signal Memory switch SET switch off 10 kΩ or higher
      Memory switch SET switch on Below 1 Ω
      P10-13 (M1) - P10-29 (MSWE) R-V Memory switch signal Memory switch M1 switch off 10 kΩ or higher
      Memory switch M1 switch on Below 1 Ω
      P10-14 (M2) - P10-29 (MSWE) B-V Memory switch signal Memory switch M2 switch off 10kΩ or higher
      Memory switch M2 switch on Below 1 Ω
      P10-15 (M3) - P10-29 (MSWE) Y-V Memory switch signal Memory switch M3 switch off 10 kΩ or higher
      Memory switch M3 switch on Below 1 Ω
      P10-17 (DSDN) - N10-1 (GND) R - W-B Seat belt anchorage switch signal Seat belt anchorage down switch off 10 kΩ or higher
      Seat belt anchorage down switch on Below 1 Ω
      P10-18 (DSUP) - N10-1 (GND) B - W-B Seat belt anchorage switch signal Seat belt anchorage up switch off 10 kΩ or higher
      Seat belt anchorage up switch on Below 1 Ω

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

    3. Reconnect the M10 and P10 ECU connectors.
    4. Measure the voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P10-16 (MM) - P10-29 (MSWE) BE-V Memory switch signal Memory switch SET switch off 11 to 14 V
      Memory switch SET switch on Below 1 V
      P10-13 (M1) - P10-29 (MSWE) R-V Memory switch signal Memory switch M1 switch off 11 to 14 V
      Memory switch M1 switch on Below 1 V
      P10-14 (M2) - P10-29 (MSWE) B-V Memory switch signal Memory switch M2 switch off 11 to 14 V
      Memory switch M2 switch on Below 1 V
      P10-15 (M3) - P10-29 (MSWE) Y-V Memory switch signal Memory switch M3 switch off 11 to 14 V
      Memory switch M3 switch on Below 1 V
      P10-17 (DSDN) - N10-1 (GND) R - W-B Seat belt anchorage switch signal Seat belt anchorage down switch off 11 to 14 V
      Seat belt anchorage down switch on Below 1 V
      P10-18 (DSUP) - N10-1 (GND) B - W-B Seat belt anchorage switch signal Seat belt anchorage up switch off 11 to 14 V
      Seat belt anchorage up switch on Below 1 V

      If the result is not as specified, the ECU or switch may have a malfunction.

  3. CHECK FRONT DOOR ECU RH 
    Fig 3: Identifying Front Door ECU RH Connector Terminals
    G04944407Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the N1 and P4 ECU connectors.
    2. Measure the voltage and resistance according to the value (s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      N1-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      P4-29 (MSWE) - N1-1 (GND) V - W-B Ground Always Below 1 Ω
      P4-28 (PSE) - N1-1 (GND) BE - W-B Ground Always Below 1 Ω
      N1-11 (CPUB) - NM (GND) R - W-B Battery (ECU power source) Always 11 to 14 V
      N1-6 (BDR) - N1-1 (GND) BE - W-B Battery (ECU power source) Always 11 to 14 V
      N1-3 (SIG) - N1-1 (GND) V - W-B Engine switch signal Engine switch on (IG) 11 to 14 V
      P4-16 (MM) - P4-29 (MSWE) BE-V Memory switch signal Memory switch SET switch off 10 kΩ or higher
      Memory switch SET switch on Below 1 Ω
      P4-13 (M1) - P4-29 (MSWE) R-V Memory switch signal Memory switch M1 switch off 10 kΩ or higher
      Memory switch M1 switch on Below 1 Ω
      P4-14 (M2) - P4-29 (MSWE) B-V Memory switch signal Memory switch M2 switch off 10 kΩ or higher
      Memory switch M2 switch on Below 1 Ω
      P4-15 (M3) - P4-29 (MSWE) Y-V Memory switch signal Memory switch M3 switch off 10 kΩ or higher
      Memory switch M3 switch on Below 1 Ω
      P4-17 (PSDN) - N1-1 (GND) R - W-B Seat belt anchorage switch signal Seat belt anchorage down switch off 10 kΩ or higher
      Seat belt anchorage down switch on Below 1 Ω
      P4-18 (PSUP) - N1-1 (GND) B - W-B Seat belt anchorage switch signal Seat belt anchorage up switch off 10 kΩ or higher
      Seat belt anchorage up switch on Below 1 Ω

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

    3. Reconnect the N1 and P4 ECU connectors.
    4. Measure the voltage according to the value (s) in the table below.
      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      P4-16 (MM) - P4-29 (MSWE) BE-V Memory switch signal Memory switch SET switch off 11 to 14 V
      Memory switch SET switch on Below 1 V
      P4-13 (M1) - P4-29 (MSWE) R-V Memory switch signal Memory switch M1 switch off 11 to 14 V
      Memory switch M1 switch on Below 1 V
      P4-14 (M2) - P4-29 (MSWE) B-V Memory switch signal Memory switch M2 switch off 11 to 14 V
      Memory switch M2 switch on Below 1 V
      P4-15 (M3) - P4-29 (MSWE) Y-V Memory switch signal Memory switch M3 switch off 11 to 14 V
      Memory switch M3 switch on Below 1 V
      P4-17 (PSDN) - N1-1 (GND) R - W-B Seat belt anchorage switch signal Seat belt anchorage down switch off 11 to 14 V
      Seat belt anchorage down switch on Below 1 V
      P4-18 (PSUP) - N1-1 (GND) B - W-B Seat belt anchorage switch signal Seat belt anchorage up switch off 11 to 14 V
      Seat belt anchorage up switch on Below 1 V

      If the result is not as specified, the ECU or switch may have a malfunction.

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