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Terminals Of Ecu

  1. THEFT WARNING ECU 
    Fig 1: Identifying Terminals Of ECU
    G03387037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the theft warning ECU connector.

      Standard: 

      CONDITION

      Symbols (Terminal No.) Wiring Color Condition Standard
      T7-20 <==> Body ground (GND <==> Body ground) W-B <==> Body ground Constant Continuity
      T7-21 <==> T7-20 (+B2 <==> GND) B-O<==>W-B Constant 10-14 V
      T7-24 <==> T7-20 (IG <==> GND) V-W <==> W-B Ignition switch OFF --> ON 0 V --> 10-14 V
      T7-1 <==> T7-20 (+B <==> GND) L-0 <==> W-B Constant 10-14 V
    2. Connect the theft warning ECU connector.

      Standard: 

      CONDITION

      Symbols (Terminal No.) Wiring Color Condition Standard)
      T7-3 <==> T7-20 (IND <==> GND) B <==> W-B Security indicator light does not lights up. 0 V
  2. TRANSPONDER KEY ECU 
    Fig 2: Identifying Transponder Key ECU
    G03387038Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the transponder key ECU connector.

      Standard: 

      CONDITION

      Symbols (Terminal No.) Wiring Color Condition Standard
      T13-14 <==> Body ground (GND <==> Body ground) W-B <==> Body ground Constant Continuity
      T13-1 <==> T13-14 (CPUB <==> GND) L-0 <==> W-B Constant 10-14 V
      T13-2 <==> T13-14 (IG2 <==> GND) G-B <==> W-B Ignition switch OFF-->ON 0 V --> 10- 14 V
      T13-3 <==> T13-14 (KSW <==> GND) LG-B <==> W-B No key in the ignition key cylinder --> With key No continuity --> Continuity
    2. Connect the transponder key ECU connector.

      Standard: 

      CONDITION

      Symbols (Terminal No.) Wiring Color Condition Standard
      T13-3 <==> T13-14 (KSW <==> GND) LG-B <==> W-B No key in the ignition key cylinder --> With key 10 - 14 V -->0 V
      T13-9 <==> T13-14 (VC12 <==> GND) Y <==> W-B Ignition switch OFF --> ON 0 V --> 10 --> 14 V
      T13-12 <==> T13-14 (TXCT <==> GND) G <==> W-B Ignition switch OFF --> ON Waveform 1
      T13-10 <==> T13-14 (CODE <==> GND) V-W <==> W-B Ignition switch OFF --> ON Waveform 2
      T13-11 <==> T13-14 (RXCK <==> GND) R <==> W-B Ignition switch OFF --> ON Waveform 3
      T13-6 <==> T13-14 (EFIO<==>GND) B-R <=> W-B Ignition switch OFF --> ON Waveform 4
      T13-7 <==> T13-14 (EFII <==> GND) W-L <==> W-B Ignition switch OFF --> ON Waveform 5
    3. Inspection using oscilloscope.

    Reference: 

  3. Waveform 1
    CONDITION

    Item Condition
    Terminal TXCT-GND
    Tool setting 5V/ DIV, 20ms/ DIV
    Vehicle condition Ignition switch ON
    Fig 3: Oscilloscope Waveform (1 Of 5)
    G03387039Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Reference: 

  4. Waveform 2
    CONDITION

    Item Condition
    Terminal CODE-GND
    Tool setting 10V/DIV, 20ms/DIV
    Vehicle condition Ignition switch ON
    Fig 4: Oscilloscope Waveform (2 Of 5)
    G03387040Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Reference: 

  5. Waveform 3
    WAVEFORM

    Item Condition
    Terminal RXCK - GND
    Tool setting 10V/ DIV, 20ms/ DIV
    Vehicle condition Ignition switch ON
    Fig 5: Oscilloscope Waveform (3 Of 5)
    G03387041Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Reference: 

  6. Waveform 4
    WAVEFORM

    Item Condition
    Terminal EFIO-GND
    Tool setting 5V/ DIV, 5ms/ DiV
    Vehicle condition Ignition switch ON
    Fig 6: Oscilloscope Waveform (4 Of 5)
    G03387042Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

    Reference: 

  7. Waveform 5
    WAVEFORM

    Item Condition
    Terminal EFII-GND
    Tool setting 5V/ DIV, 5ms/ DIV
    Vehicle condition Constant
    Fig 7: Oscilloscope Waveform (5 Of 5)
    G03387043Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  8. ECM 
    Fig 8: Identifying ECM Terminals
    G03387044Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    CONDITION

    Symbols (Terminal No.) Wiring Color Condition Standard
    E6-4 <==> E3-7 (BATT <==> EI) B <==> BR Constant 9 -14 V
    E6-6 <==> E3-7 (+B <==> El) B-W --> BR Ignition switch OFF --> ON 9 - 14 V
    E6-5 <==> E3-7 (+B1 <==> El) B-W <==> BR Ignition switch OFF --> ON 9 - 14 V
    E6-17 <==> E3-7 (IGSW <==> EI) G-B <==> BR Ignition switch OFF --> ON 9 - 14 V
    E5-24 <==> E3-7 (IMI <==> El) B-R <==> BR No key in the ignition key cylinder --> With key Waveform 1
    E5-23 <==> E3-7 (IMO <==> EI) W-L <==> BR No key in the ignition key cylinder --> With key Waveform 2
    E3-7 <==> Body ground (El <==> Body ground) BR <==> Body ground Constant Continuity

    Reference: 

    1. Inspection using oscilloscope.
    2. Waveform 4
      CONDITION

      Item Condition
      Terminal IMI - GND
      Tool setting 5V/ DIV, 5ms/ DIV
      Vehicle condition Ignition switch ON
      Fig 9: Oscilloscope Waveform (1 Of 2)
      G03387045Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Reference: 

    3. Waveform 5
      CONDITION

      Item Condition
      Terminal IMO-GND
      Tool setting 5V/ DIV, 5ms/ DIV
      Vehicle condition Constant
    Fig 10: Oscilloscope Waveform (2 Of 2)
    G03387046Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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