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Terminals Of Ecu

  1. CHECK CERTIFICATION ECU 
    Fig 1: Identifying Terminals Of ECU F78 / F79
    GTY226805Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F79 ECU connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F79-1 (+B) - F79-15 (E) V - W-B +B power supply Always 11 to 14 V
      F79-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F79-16 (IG) - F79-15 (E) W - W-B IG power supply Engine switch off → on (IG) Below 1 V →11 to 14 V
      F79-17 (CUTB) - F79-15 (E) L - W-B +B power supply Always 11 to 14 V

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

    3. Reconnect the F79 ECU connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F79-3 (CLG1) - F79-15 (E) R - W-B Electrical key antenna (for driver side) sensor signal Engine switch off, all doors closed, key not in cabin and transmitter lock switch not pressed → pressed No pulse generation → Pulse generation
      F79-4 (CG1B) - F79-15 (E) W - W-B Electrical key antenna (for driver side) sensor signal Engine switch off, all doors closed, key not in cabin and transmitter lock switch not pressed → pressed No pulse generation → Pulse generation
      F79-5 (CLG2) - F79-15 (E) R - W-B Electrical key antenna (for front passenger side) sensor signal Engine switch off, all doors closed, key not in cabin and transmitter lock switch not pressed → pressed No pulse generation → Pulse generation
      F79-6 (CG2B) - F79-15 (E) W - W-B Electrical key antenna (for front passenger side) sensor signal Engine switch off, all doors closed, key not in cabin and transmitter lock switch not pressed → pressed No pulse generation → Pulse generation
      F79-7 (CLG5) - F79-15 (E) R - W-B Indoor No. 1 electrical key antenna (front floor) sensor signal Engine switch off, all doors closed, key not in cabin and lock sensor off → on No pulse generation → Pulse generation
      F79-8 (CG5B) - F79-15 (E) W - W-B Indoor No. 1 electrical key antenna (front floor) sensor signal Engine switch off, all doors closed, key not in cabin and lock sensor off → on No pulse generation → Pulse generation
      F79-18 (TSW1) - F79-15 (E) V - W-B Entry lock sensor (for driver side) detection signal Engine switch off, all doors closed and lock sensor (for driver side) off → on Pulse generation → Below 2 V
      F79-19 (TSW2) - F79-15 (E) V - W-B Entry lock sensor (for front passenger side) detection signal Engine switch off, all doors closed and lock sensor (for front passenger side) off → on Pulse generation → Below 2 V
      F79-20 (SEN1) - F79-15 (E) W - W-B Entry unlock sensor (for driver side) detection signal Engine switch off, all doors locked, key not sufficiently close to vehicle and unlock sensor (for driver side) off → on Pulse generation → Below 2 V
      F79-21 (SEN2) - F79-15 (E) W - W-B Entry unlock sensor (for front passenger side) detection signal Engine switch off, all doors locked, key not sufficiently close to vehicle and unlock sensor (for front passenger side) off → on Pulse generation → Below 2 V
      F79-22 (TSW5) - Body ground V - Body ground Back door opener switch signal Unlock switch off → on Pulse generation → Below 1 V
      F79-23 (TSW6) - Body ground W - Body ground Back door control switch signal Lock switch off → on Pulse generation → Below 1 V
      F79-24 (CLG6) - F79-15 (E) W - W-B Indoor No. 2 electrical key antenna (rear floor) sensor signal Engine switch off, all doors closed, key not in cabin and lock sensor off → on No pulse generation → Pulse generation
      F79-25 (CG6B) - F79-15 (E) Y - W-B Indoor No. 2 electrical key antenna (rear floor) sensor signal Engine switch off, all doors closed, key not in cabin and lock sensor off → on No pulse generation → Pulse generation
      F79-26 (CLG7) - F79-15 (E) R - W-B Indoor No. 2 electrical key antenna (inside luggage) sensor signal Engine switch off, all doors closed, key not in cabin and lock sensor off → on No pulse generation → Pulse generation
      F79-27 (CG7B) - F79-15 (E) G - W-B Indoor No. 2 electrical key antenna (inside luggage) sensor signal Engine switch off, all doors closed, key not in cabin and lock sensor off → on No pulse generation → Pulse generation
      F79-32 (POS1) - F79-15 (E) P - W-B Entry unlock sensor (for driver side) output signal Engine switch off → on (IG) 9 to 14 V → Below 2 V
      F79-33 (POS2) - F79-15 (E) P - W-B Entry unlock sensor (for front passenger side) output signal Engine switch off → on (IG) 9 to 14 V → Below 2 V
      F78-5 (RCO) - F79-15 (E) L - W-B Door control receiver power source Engine switch off and transmitter switch not pressed → pressed Below 1 V → 4.5 to 5.5 V
      F78-15 (RDA) - F79-15 (E) G - W-B Door control receiver data input signal Engine switch off 11 to 14 V pulse generation at regular intervals
      F78-16 (RSSI) - F79-15 (E) P - W-B Door control receiver electric wave existence signal All doors closed, all doors locked and transmitter switch not pressed → pressed 11 to 14 V → Below 2 V
      F78-19 (CLG8) - F79-15 (E) W - W-B Electrical key antenna (outside luggage) sensor signal Engine switch off, all doors closed and unlock switch off → on No pulse generation → Pulse generation
      F78-20 (CG8B) - F79-15 (E) B - W-B Electrical key antenna (outside luggage) sensor signal Engine switch off, all doors closed and unlock switch off → on No pulse generation → Pulse generation

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

  2. CHECK DRIVER SIDE JUNCTION BLOCK ASSEMBLY AND MAIN BODY ECU (MULTIPLEX NETWORK BODY ECU) 
    Fig 2: Identifying Driver Side Junction Block Assembly & Main Body ECU Terminals
    GTY227781Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Remove the main body ECU. Refer to REMOVAL .
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      A-30 (BECU) - Body ground - Auxiliary battery power supply Always 11 to 14 V
      A-31 (ALTB) - Body ground - Auxiliary battery power supply Always 11 to 14 V
      A-32 (IG) - Body ground - Engine switch power supply Engine switch on (IG) 11 to 14 V
      A-32 (IG) - Body ground - Engine switch power supply Engine switch off Below 1 V
      A-29 (ACC) - Body ground - ACC power supply Engine switch on (ACC) 11 to 14 V
      A-29 (ACC) - Body ground - ACC power supply Engine switch off Below 1 V
      A-11 (GND1) - Body ground - Ground Always Below 1 Ω
      F10-3 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Install the main body ECU. Refer to INSTALLATION .
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      2F-27 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH open Below 1 V
      2F-27 (FLCY) - Body ground R - Body ground Front door LH courtesy switch input Front door LH closed 11 to 14 V
      2B-15 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH open Below 1 V
      2B-15 (FRCY) - Body ground B - Body ground Front door RH courtesy switch input Front door RH closed 11 to 14 V
      F8-3 (LCTY) - Body ground V - Body ground Rear door LH courtesy light switch input Rear door LH open Below 1 V
      F8-3 (LCTY) - Body ground V - Body ground Rear door LH courtesy light switch input Rear door LH closed 11 to 14 V
      F9-6 (RCTY) - Body ground R - Body ground Rear door RH courtesy light switch input Rear door RH open Below 1 V
      F9-6 (RCTY) - Body ground R - Body ground Rear door RH courtesy light switch input Rear door RH closed 11 to 14 V
      F9-7 (LSFL) - Body ground G - Body ground Front door LH lock position switch input Front door LH unlocked Below 1 V
      F9-7 (LSFL) - Body ground G - Body ground Front door LH lock position switch input Engine switch off, all doors closed and front door LH locked Pulse generation (see Fig 3 or Fig 4)
      F9-18 (LSFR) - Body ground G - Body ground Front door RH lock position switch input Front door RH unlocked Below 1 V
      F9-18 (LSFR) - Body ground G - Body ground Front door RH lock position switch input Engine switch off, all doors closed and front door RH locked Pulse generation (see Fig 5 or Fig 6)
      2F-25 (LSWL) - Body ground V - Body ground Rear door LH lock position switch input Rear door LH unlocked Below 1 V
      2F-25 (LSWL) - Body ground V - Body ground Rear door LH lock position switch input Engine switch off, all doors closed and rear door LH locked Pulse generation (see Fig 7 or Fig 86)
      F10-2 (LSWR) - Body ground V - Body ground Rear door RH lock position switch input Rear door RH unlocked Below 1 V
      F10-2 (LSWR) - Body ground V - Body ground Rear door RH lock position switch input Engine switch off, all doors closed and rear door RH locked Pulse generation (see Fig 9 orFig 10 )

      If the result is not as specified, the main body ECU or driver side junction block assembly may have a malfunction.

    5. Using an oscilloscope, check waveform 1.
      Fig 3: Identifying Waveform 1
      GTY223996Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F9-7 (LSFL) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and front door LH locked
    6. Using an oscilloscope, check waveform 2.
      Fig 4: Identifying Waveform 2
      GTY218794Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F9-7 (LSFL) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and front door LH locked
    7. Using an oscilloscope, check waveform 3.
      Fig 5: Identifying Waveform 3
      GTY220369Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 3 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F9-18 (LSFR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and front door RH locked
    8. Using an oscilloscope, check waveform 4.
      Fig 6: Identifying Waveform 4
      GTY222650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 4 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F9-18 (LSFR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and front door RH locked
    9. Using an oscilloscope, check waveform 5.
      Fig 7: Identifying Waveform 5
      GTY220369Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 5 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2F-25 (LSWL) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and rear door LH locked
    10. Using an oscilloscope, check waveform 6.
      Fig 8: Identifying Waveform 6
      GTY222650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 6 (REFERENCE)

      Item Content
      Terminal No. (Symbol) 2F-25 (LSWL) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and rear door LH locked
    11. Using an oscilloscope, check waveform 7.
      Fig 9: Identifying Waveform 7
      GTY220369Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 7 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F10-2 (LSWR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and rear door RH locked
    12. Using an oscilloscope, check waveform 8.
      Fig 10: Identifying Waveform 8
      GTY222650Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 8 (REFERENCE)

      Item Content
      Terminal No. (Symbol) F10-2 (LSWR) - Body ground
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Condition Ignition switch off, all doors closed and rear door RH locked
  3. CHECK MULTIPLEX NETWORK DOOR ECU (BACK DOOR P/W) 
    Fig 11: Identifying V2 Multiplex Network Door ECU Connector
    GTY221964Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the V2 multiplex network door ECU (back door P/W) connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      V2-1 (BDR) - Body ground B - Body ground Battery power supply Always 11 to 14 V
      V2-7 (BECU) - Body ground L - Body ground Battery power supply Always 11 to 14 V
      V2-8 (SIG) - Body ground G - Body ground Engine switch power supply Engine switch on (IG) 11 to 14 V
      V2-8 (SIG) - Body ground G - Body ground Engine switch power supply Engine switch off Below 1 V
      V2-6 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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

    3. Reconnect the V2 multiplex network door ECU (back door P/W) connector.
    4. Measure the voltage according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      W10-10 (BDCY) - W10-18 (CTYE) P - G Back door courtesy switch input Back door closed Pulse generation (see Fig 12 or Fig 13)
      W10-10 (BDCY) - W10-18 (CTYE) P - G Back door courtesy switch input Back door open Below 1 V
      W10-17 (SUP) - W10-21 (E3) W - B Back door control switch input Lock switch off Pulse generation (see Fig 14 or Fig 15)
      W10-17 (SUP) - W10-21 (E3) W - B Back door control switch input Lock switch on Below 1 V
      W10-9 (SDN) - W10-21 (E3) SB - B Back door control switch input Unlock switch off Pulse generation (see Fig 16 or Fig 17)
      W10--9 (SDN) - W10-21 (E3) SB - B Back door control switch input Unlock switch on Below 1 V

      If the result is not as specified, the multiplex network door ECU (back door P/W) may have a malfunction.

    5. Using an oscilloscope, check waveform 1.
      Fig 12: Identifying Waveform
      GTY222203Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Content
      Terminal No. (Symbol) W10-10 (BDCY) - W10-18 (CTYE)
      Tool Setting 5 V/DIV., 10 ms/DIV.
      Condition Back door closed
    6. Using an oscilloscope, check waveform 2.
      Fig 13: Identifying Waveform
      GTY219139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 2 (REFERENCE)

      Item Content
      Terminal No. (Symbol) W10-10 (BDCY) - W10-18 (CTYE)
      Tool Setting 5 V/DIV., 10 ms/DIV.
      Condition Back door closed
    7. Using an oscilloscope, check waveform 3.
      Fig 14: Identifying Waveform
      GTY222203Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 3 (REFERENCE)

      Item Content
      Terminal No. (Symbol) W10-17 (SUP) - W10-21 (E3)
      Tool Setting 5 V/DIV., 10 ms/DIV.
      Condition Lock switch off
    8. Using an oscilloscope, check waveform 4.
      Fig 15: Identifying Waveform
      GTY219139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 4 (REFERENCE)

      Item Content
      Terminal No. (Symbol) W10-17 (SUP) - W10-21 (E3)
      Tool Setting 5 V/DIV., 10 ms/DIV.
      Condition Lock switch off
    9. Using an oscilloscope, check waveform 5.
      Fig 16: Identifying Waveform
      GTY222203Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 5 (REFERENCE)

      Item Content
      Terminal No. (Symbol) W10-9 (SDN) - W10-21 (E3)
      Tool Setting 5 V/DIV., 10 ms/DIV.
      Condition Unlock switch off
    10. Using an oscilloscope, check waveform 6.
      Fig 17: Identifying Waveform
      GTY219139Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 6 (REFERENCE)

      Item Content
      Terminal No. (Symbol) W10-9 (SDN) - W10-21 (E3)
      Tool Setting 5 V/DIV., 10 ms/DIV.
      Condition Unlock switch off
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