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Terminals Of Ecu

WARNING: This page is about a different car, the 2008 Toyota Sequoia. However, it is still accessible from the selected car via links, so may be relevant.
  1. CHECK MAIN BODY ECU 
    Fig 1: Identifying Main Body ECU Connector Terminals
    G05652919Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA, DB, DD, DE and H2 main body ECU connectors.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL SPECIFIED CONDITION REFERENCE CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H2-10 (LIN2) - V - Body ground LIN communication line Ignition switch ON Pulse generation
      DA-1 (ALTB) - DD-62 (GND) B - W-B Battery power supply Always 11 to 14 V
      DB-13 (BECU) - DD-62 (GND) GR - W-B Battery power supply Always 11 to 14 V
      DB-15 (IGN) - DD-62 (GND) SB - W-B IG power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      DD-62 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DD-30 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DE-7 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

      HINT:

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

    3. Reconnect the main body ECU connectors.
  2. CHECK POWER WINDOW REGULATOR MASTER SWITCH ASSEMBLY 
    Fig 2: Identifying M2 Power Window Regulator Master Switch Assembly Connector Terminals
    G05652920Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M2 power window regulator master switch assembly connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL SPECIFIED CONDITION REFERENCE CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M2-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      M2-3 (B) - M2-1 (E) L - W-B Battery power supply Always 11 to 14 V
      M2-6 (LIN1) - Body ground L - Body ground LIN communication line Ignition switch ON Pulse generation
      M2-7 (LIN2) - Body ground W - Body ground LIN communication line Ignition switch ON Pulse generation

      HINT:

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

    3. Reconnect the power window regulator master switch assembly connector.
  3. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH 
    Fig 3: Identifying M3 Front Power Window Regulator Motor Assembly LH Connector Terminals
    G05652921Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M3 front power window regulator motor assembly LH connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL SPECIFIED CONDITION REFERENCE CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M3-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      M3-2 (B) - M3-1 (GND) G - W-B Battery power supply Always 11 to 14 V
      M3-9 (LIN) - Body ground W - Body ground LIN communication line Ignition switch ON Pulse generation

      HINT:

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

    3. Reconnect the front power window regulator motor assembly LH connector.
  4. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY RH 
    Fig 4: Identifying L3 Front Power Window Regulator Motor Assembly RH Connector Terminals
    G05652922Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L3 front power window regulator motor assembly RH connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL SPECIFIED CONDITION REFERENCE CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L3-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L3-2 (B) - L3-1 (GND) V - W-B Battery power supply Always 11 to 14 V
      L3-9 (LIN) - Body ground L - Body ground LIN communication line Ignition switch ON Pulse generation

      HINT:

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

    3. Reconnect the front power window regulator motor assembly RH connector.
  5. CHECK SLIDING ROOF DRIVE GEAR SUB-ASSEMBLY 
    Fig 5: Identifying U3 Sliding Roof Drive Gear Sub-Assembly Connector Terminals
    G05652923Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the U3 sliding roof drive gear sub-assembly connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL SPECIFIED CONDITION REFERENCE CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      U3-3 (MPX1) - Body ground P - Body ground LIN communication line Ignition switch ON Pulse generation
      U3-8 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      U3-10 (B) - U3-8 (E) L - W-B Battery power supply Always 11 to 14 V

      HINT:

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

    3. Reconnect the sliding roof drive gear sub-assembly connector.
  6. CHECK BACK DOOR ECU 
    Fig 6: Identifying V2 Back Door ECU Connector Terminals
    G05652924Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the V2 back door ECU connector.
    2. Measure the resistance and voltage according to the value (s) in the table below.
      TERMINAL SPECIFIED CONDITION REFERENCE CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      V2-1 (BDR) - V2-6 (GND) SB - W-B Battery power supply Always 11 to 14 V
      V2-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      V2-7 (BECU) - V2-6 (GND) GR - W-B Battery power supply Always 11 to 14 V
      V2-16 (MPX1) - Body ground Y - Body ground LIN communication line Ignition switch ON Pulse generation

      HINT:

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

    3. Reconnect the back door ECU connector.
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