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Terminals Of Ecu

  1. CHECK FRONT POWER WINDOW REGULATOR MOTOR ASSEMBLY LH 
    Fig 1: Identifying Front Power Window Regulator Motor Assembly LH Connector Terminals
    G05655780Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M3 power window regulator motor LH connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M3-2 (B) - Body ground G - Body ground Battery power supply Always 11 to 14 V
      M3-1 (GND) - 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 M3 power window regulator motor LH connector.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M3-10 (UP) - M3-1 (GND) O - W-B Power window UP operation Ignition switch ON Power window regulator master switch OFF → UP 11 to 14 V → Below 1 V
      M3-10 (UP) - M3-1 (GND) O - W-B Power window UP operation Ignition switch ON door glass fully open → power window AUTO UP operation → the door glass fully closed 11 to 14 V → Below 1 V → 11 to 14 V
      M3-7 (DOWN) - M3-1 (GND) SB - W-B Power window DOWN operation Ignition switch ON Power window regulator master switch OFF → DOWN 11 to 14 V → Below 1 V
      M3-7 (DOWN) - M3-1 (GND) SB - W-B Power window DOWN operation Ignition switch ON door glass fully closed → power window AUTO DOWN operation → the door glass fully closed 11 to 14 V → Below 1 V → 11 to 14 V
      M3-9 (LIN) - M3-1 (GND) W - W-B LIN communication signal Ignition switch ON Pulse generation

      If the result is not as specified, the motor may be malfunctioning.

  2. CHECK FRONT POWER WINDOW REGULATOR MOTOR RH 
    Fig 2: Identifying Front Power Window Regulator Motor RH Connector Terminals
    G05655781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L3 power window regulator motor RH connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L3-2 (B) - Body ground V - Body ground Battery power supply Always 11 to 14 V
      L3-1 (GND) - 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 I12 power window regulator motor LH connector.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      L3-10 (UP) - L3-1 (GND) G - W-B Power window UP operation Ignition switch ON power window regulator switch OFF → UP 11 to 14 V → Below 1 V
      L3-10 (UP) - L3-1 (GND) G - W-B Power window UP operation Ignition switch ON door glass fully open → power window AUTO UP operation → the door glass fully closed 11 to 14 V → Below 1 V → 11 to 14 V
      L3-7 (DOWN) - L3-1 (GND) P - W-B Power window DOWN operation Ignition switch ON power window regulator switch OFF → DOWN 11 to 14 V → Below 1 V
      L3-7 (DOWN) - L3-1 (GND) P - W-B Power window DOWN operation Ignition switch ON door glass fully closed → power window AUTO DOWN operation → the door glass fully closed 11 to 14 V → Below 1 V → 11 to 14 V
      L3-9 (LIN) - L3-1 (GND) L - W-B LIN communication signal Ignition switch ON Pulse generation
      L3-4 (AUTO) - L3-1 (GND) B - W-B Power window AUTO UP/DOWN operation Ignition switch ON power window regulator switch OFF → AUTO UP/DOWN operation 11 to 14 V → Below 1 V

      If the result is not as specified, the motor may be malfunctioning.

  3. CHECK POWER WINDOW REGULATOR MASTER SWITCH 
    Fig 3: Identifying Power Window Regulator Master Switch Connector Terminals
    G05655782Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the M2 power window regulator master switch connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M2-3 (B) - Body ground L - Body ground Battery power supply Ignition switch ON 11 to 14 V
      M2-13 (B) - Body ground P - Body ground Battery power supply Always 11 to 14 V
      M2-1 (E) - 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 M2 power window regulator master switch connector.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      M2-4 (UP) - M2-1 (E) O - W-B Driver side door power window UP operation Ignition switch ON, driver side door power window regulator switch OFF → UP 11 to 14 V → Below 1 V
      M2-4 (UP) - M2-1 (E) O - W-B Driver side door power window AUTO UP operation Ignition switch ON, driver side door glass fully closed → power window AUTO UP operation → driver side door glass fully open 11 to 14V → Below 1 V → 11 to 14 V
      M2-5 (DOWN) - M2-1 (E) SB - W-B Driver side door power window DOWN operation Ignition switch ON, driver side door power window regulator switch OFF → DOWN 11 to 14 V → Below 1 V
      M2-5 (DOWN) - M2-1 (E) SB - W-B Driver side door power window AUTO DOWN operation Ignition switch ON, driver side door glass fully closed → power window AUTO DOWN operation → driver side door glass fully open 11 to 14 V → Below 1 V → 11 to 14 V
      M2-12 (U) - M2-1 (E) V - W-B Rear LH side door power window UP operation Ignition switch ON, rear LH side door power window regulator switch OFF → UP Below 1 V → 11 to 14 V
      M2-15 (D) - M2-1 (E) B - W-B Rear LH side door power window DOWN operation Ignition switch ON, rear LH side door power window regulator switch OFF → DOWN Below 1 V → 11 to 14 V
      M2-10 (U) - M2-1 (E) O - W-B Rear RH side door power window UP operation Ignition switch ON, rear RH side door power window regulator switch OFF → UP Below 1 V → 11 to 14 V
      M2-16 (D) - M2-1 (E) LG - W-B Rear RH side door power window DOWN operation Ignition switch ON, rear RH side door power window regulator switch OFF → DOWN Below 1 V → 11 to 14 V
      M2-6 (LIN1) - M2-1 (E) L - W-B LIN communication signal Ignition switch ON Pulse generation
      M2-7 (LIN2) - M2-1 (E) W - W-B LIN communication signal Ignition switch ON Pulse generation

      If the result is not as specified, the power window regulator master switch may be malfunctioning.

  4. CHECK MAIN BODY ECU (COWL SIDE JUNCTION BLOCK LH) 
    Fig 4: Identifying Main Body ECU (COWL Side Junction Block LH) Connector Terminals
    G05655783Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DD, H3 and H4 main body ECU connectors.
    2. Measure the resistance according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      DD-62 (GND1, GND2) - Body ground W-B - Body ground Body ground Always Below 1 Ω
      H3-21 (PCTY) - Body ground O - Body ground Front door courtesy light switch RH signal Front door RH open → closed Below 1 Ω → 10 kΩ or higher
      H4-24 (DCTY) - Body ground BR - Body ground Front door courtesy light switch LH signal Front door LH open → closed Below 1 Ω → 10 kΩ or higher

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

    3. Reconnect the DD, H3 and H4 main body ECU connectors.
    4. Measure the voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      DB-13 (BECU) - Body ground GR - Body ground BECU power supply Always 11 to 14 V
      DD-43 - Body ground LG - Body ground IG signal Ignition switch off → ON Below 1 V → 11 to 14 V
      H2-10 (LIN2) - DD-62 (GND1, GND2) V - W-B LIN communication signal Ignition switch ON Pulse generation

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

  5. CHECK BACK DOOR ECU (MULTIPLEX BODY ECU) 
    Fig 5: Identifying V2 An V3 Back Door ECU Connector Terminals
    G05655784Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the V2 an V3 back door ECU connectors.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      V2-7 (BECU) - Body ground GR - Body ground Battery power supply Always 11 to 14 V
      V2-8 (SIG) - Body ground Y - Body ground IG power supply Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      V2-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      V3-7 (BKUL) - V3-19 (KEYE) LG-O Back door key cylinder linked switch signal Back door key cylinder turned UNLOCK Below 1 Ω
      V3-8 (BKL) - V3-19 (KEYE) G-O Back door key cylinder linked switch signal Back door key cylinder turned LOCK Below 1 Ω
      V3-17 (P) - V3-25 (SGND) V-G Rear wiper retractable position switch signal Rear wiper motor retractable position Below 1 Ω

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

    3. Reconnect the V2 an V3 back door ECU connectors.
    4. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      V2-16 (MPX1) - V2-6 (GND) Y - W-B LIN communication signal Ignition switch ON Pulse generation
      V2-21 (A UP) - V2-6 (GND) G - W-B Back door power window AUTO UP signal Ignition switch ON Back door power window switch OFF → AUTO UP Pulse generation → Below 1 V
      V2-22 (BUP) - V2-6 (GND) O - W-B Back door power window UP signal Ignition switch ON Back door power window switch OFF → UP Pulse generation → Below 1 V
      V2-23 (BDN) - V2-6 (GND) V - W-B Back door power window DOWN signal Ignition switch ON Back door power window switch OFF → DOWN Pulse generation → Below 1 V
      V2-24 (A DN) - V2-6 (GND) L - W-B Back door power window AUTO DOWN signal Ignition switch ON Back door power window switch OFF → AUTO DOWN Pulse generation → Below 1 V
      V3-5 (BDUP) - V2-6 (GND) O - W-B Back door power window UP operation signal Ignition switch ON Back door power window switch OFF → UP Below 1 V → 11 to 14 V
      V3-6 (BDDN) - V2-6 (GND) P - W-B Back door power window DOWN operation signal Ignition switch ON Back door power window switch OFF → DOWN Below 1 V → 11 to 14 V
      V3-12 (DSV) - V3-23 (DSG) LG-SB Power supply for Hall-IC Ignition switch ON 8.5 to 16 V
      V3-13 (DS1) - V3-23 (DSG) L-SB Back door window glass position signal Back door power window operation Pulse generation
      V3-14 (DS2) - V3-23 (DSG) Y-SB Back door window glass position signal Back door power window operation Pulse generation
      V3-19(KEYE) - V2-6 (GND) O - W-B Ground for back door key cylinder switch Always Below 1 Ω
      V3-23 (DSG) - V2-6 (GND) SB - W-B Ground for Hall-IC Always Below 1 Ω
      V3-25 (SGND) - V2-6 (GND) G - W-B Ground for rear wiper reverse position and rear wiper retractable position switch Always Below 1 Ω

      If the result is not as specified, the back door ECU may be malfunctioning.

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