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Terminals Of Ecu

  1. CHECK THEFT WARNING ECU 
    Fig 1: Identifying Terminals Of ECU
    G03002901Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T5 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (T5-20) -Body ground W-B - Body ground Ground Always Below 1 Ω
      +B1 (T5-1) - Body ground V-Y - Body ground +B power supply Always 10 to 14V
      +B2 (T5-21) - Body ground G-W - Body ground +B power supply Always 10 to 14V
      IG (T5-24) - Body ground R-L - Body ground Ignition power supply Ignition switch OFF --> ON 0V 10 to 14V
      CNSL (T5-10) - Body ground P-B - Body ground Smart key system cancel switch Cancel switch OFF --> ON 10 kΩ or higher --> Below 1 Ω

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

    3. Reconnect the T5 ECU connector.
    4. Measure the voltage and frequency of the connector.
    TERMINAL DESCRIPTION AND SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    IND2 (T5-2) - Body ground V-R - Body ground Smart indicator Smart indicator illuminates (When ignition switch is turned from OFF to ON and vehicle interior check passes, it illuminates. When ignition switch is OFF and any door is unlocked, it flashes continuously.) 3 to 6V
    RCO (T5-15) - Body ground B-Y - Body ground Power source Ignition switch OFF, no key inserted, all doors closed and transmitter switch OFF --> ON 0 to 6 V --> 6 V
    RDA (T5-29) - Body ground Y - Body ground Door control receiver input signal No key in ignition key cylinder, all doors closed and transmitter switch OFF --> ON Below 1 V --> 12V
    RSS1 (T5-30) - Body ground G - Body ground Door control receiver output signal Ignition switch OFF, no key inserted, all doors closed and transmitter switch OFF --> ON 0 to 6 --> V --> Below 1 V
    RCO2 (T5-34) - Body ground B-Y - Body ground Power source Luggage door closed and ignition switch OFF --> ON 0V --> 6V
    TERMINAL DESCRIPTION AND SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    RDA2 (T5-32) - Body ground Y-G - Body ground Door control receiver input signal No key in ignition key cylinder, all doors closed and transmitter switch OFF --> ON Below 1 V --> 12V
    RSS2 (T5-12) - Body ground R-G - Body ground Door control receiver output signal Luggage door closed, smart key within trunk output area and ignition switch OFF --> ON 0 to 6 V --> Below 1 V
    CLG1 (T5-16) - Body ground G-W - Body ground Driver door oscillator sensor signal All doors closed from outside vehicle by wireless lock operation and ignition switch OFF --> ON 0 Hz --> Some Hz
    CLG2 (T5-17) - Body ground L-B - Body ground passenger door oscillator sensor signal All doors closed from outside vehicle by wireless lock operation and ignition switch OFF --> ON 0 Hz --> Some Hz
    CLG3 (T5-36) - Body ground B - Body ground Rear door LH oscillator sensor signal All doors closed from outside vehicle by wireless lock operation and ignition switch OFF --> ON 0 Hz --> Some Hz
    CLG4 (T5-37) - Body ground V - Body ground Rear door LH oscillator sensor signal All doors closed from outside vehicle by wireless lock operation and ignition switch OFF --> ON 0 Hz --> Some Hz
    CLG5 (T5-18) - Body ground B-W - Body ground Room oscillator front sensor signal 30 sec. elapses after driver door open --> closed; or closed --> open and ignition switch OFF --> ON 0 Hz --> Some Hz
    CLG6 (T5-19) - Body ground LG-B - Body ground Luggage oscillator outer sensor signal 30 sec. elapses after driver door open --> closed; or closed --> open and ignition switch OFF --> ON 0 Hz --> Some Hz
    CLG7 (T5-38) - Body ground R-B - Body ground Room oscillator rear sensor signal 30 sec. elapses after driver door open --> closed; or closed --> open and ignition switch OFF --> ON 0 Hz --> Some Hz
    CLG8 (T5-39) - Body ground L-Y - Body ground Luggage oscillator inner sensor signal 30 sec. elapses after driver door open --> closed; or closed --> open and ignition switch OFF --> ON 0 Hz --> Some Hz

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

  2. CHECK STEERING LOCK ECU 
    Fig 2: Identifying Steering Lock ECU Terminals
    G03002902Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the S46 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (S46-9) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (S46-1) - Body ground V-Y - Body ground +B power supply Always 10 to 14V
      +B (S46-10) - Body ground R-L - Body ground +B power supply Always 10 to 14V
      IG2 (S46-2) - Body ground B - Body ground Ignition power supply Ignition switch OFF --> ON 0V 10 to 14V
      PUSH (S46-11) - Body ground P-B - Body ground Push switch input signal Ignition switch OFF --> ON 10 kΩ or higher --> Below 1 Ω
      KSW (S46-12) - Body ground LG-B - Body ground Key unlock warning switch input signal Ignition switch OFF --> ON 10 kΩ or higher --> Below 1 Ω

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

    3. Reconnect the S46 ECU connector.
    4. Check the resistance and voltage of the connector.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      PUSH (S46-11) - GND (S46-9) P-B - W-B Push switch input signal Ignition switch OFF --> ON 10 to 14V 0V
      KSW (S46-12) GND (S469) LG-B - W-B Key unlock warning switch input signal Ignition switch OFF --> ON 10 to 14V 0V
      VC5 (S46-7) - GND (S46-9) R - W-B Power source Key inserted --> Ignition switch ON 0V --> 5V
      TXCT (S46-16) - GND (S46-9) Y-B - W-B Key code output signal Key inserted --> Ignition switch ON Pulse generation (see waveform 1)
      CODE (S46-17) - GND (S46-9) O - W-B Demodulated signal or key code data Key inserted --> Ignition switch ON Pulse generation (see waveform 2)
      RXCK (S46-8) - GND (S46-9) L - W-B Transponder key amplifier communication signal Key inserted --> Ignition switch ON Pulse generation (see waveform 3)
      EFIO (S46-13) - GND (S46-9) B-Y - W-B ECM output signal Ignition switch OFF --> ON Pulse generation (see waveform 4)
      EFII (S46-4) - GND (S46-9) GR-R - W-B ECM output signal Always Pulse generation (see waveform 5)

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

    5. Inspect using an oscilloscope.
    WAREFORM 1 (REFERENCE)

    Terminal TXCT - GND
    Tool Setting 2V/DIV, 10ms/DIV
    Condition Key inserted --> Ignition switch ON
    Fig 3: Identifying Waveform
    G03002903Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WAREFORM 2 (REFERENCE)

    Terminal CODE - GND
    Tool Setting 5 V/DIV, 10ms/DIV
    Condition Key inserted --> Ignition switch ON
    Fig 4: Identifying Waveform
    G03002904Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WAVEFORM 3 (REFERENCE)

    Terminal RXCK - GND
    Tool Setting 5V/DIV, 10ms/DIV
    Condition Key inserted --> Ignition switch ON
    Fig 5: Identifying Waveform
    G03002905Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    WAVEFORM 4 (REFERENCE)

    Terminal EFIO - GND
    Tool Setting 5 V/DIV, 5 ms/DIV
    Condition Ignition switch OFF --> ON
    WAVEFORM 5 (REFERENCE)

    Terminal EFII - GND
    Tool Setting 5 V/DIV, 5 ms/DIV
    Condition Always
    Fig 6: Identifying Waveform
    G03002906Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 7: Identifying Waveform
    G03002907Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK DRIVER DOOR ECU 
    Fig 8: Identifying Driver Door ECU Terminal
    G03002908Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D25 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (D25-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (D25-4) Body ground V-Y - Body ground +B power supply Always 10 to 14V
      BDR (D25-6) - Body ground R - Body ground +B power supply Always 10 to 14V
      SIG (D25-5) - Body ground R-L - Body ground Ignition power supply Ignition switch ON 10 to 14V
      TRG+ (D25-14) - TRG- (D25-13) GR- P Lock switch signal Lock switch not pushed --> pushed 10 kΩ or higher --> Below 1 Ω

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

    3. Reconnect the D25 ECU connector.
    4. Measure the frequency and voltage of the connector.
    TERMINAL DESCRIPTION AND SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    OSCB (D25-11) - OSCE (D25-22) R - G-Y +B power supply Always 10 to 14V
    SEL (D25-21) OSCE (D25-22) W - G-Y Sensor detection signal Smart key at least 3 m away from door --> near door 10 to 14V --> 0V
    CLGI (D25-10) - GND (D25-1) L-R - W-B Signal output to oscillator Smart key at least 3 m away from door --> near door Some Hz --> 0 Hz
    SENS (D25-9) - GND (D25-1) G-W - W-B Lock switch detection signal Outside door handle touched --> not touched 10 to 14V 0V
    CLGO (D25-12) - GND (D25-1) L-R - W-B Sensor detection signal All doors locked and ignition switch OFF --> ON Some Hz --> 0 Hz

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

  4. CHECK PASSENGER DOOR ECU 
    Fig 9: Identifying Passenger Door ECU Terminals
    G03002909Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the F17 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (F17-1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (F17-4) Body ground V-Y - Body ground +B power supply Always 10 to 14V
      BDR (F17-6) - Body ground R - Body ground +B power supply Always 10 to 14V
      SIG (F17-5) - Body ground R-L - Body ground Ignition power supply Ignition switch ON 10 to 14V
      TRG+ (F17-14) - TRG- (F17-13) GR-P Lock switch signal Lock switch not pushed --> pushed 10 kΩ or higher --> Below 1 Ω

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

    3. Reconnect the F17 ECU connector.
    4. Measure the frequency and voltage of the connector.
    TERMINAL DESCRIPTION AND SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    OSCB (F17-11) - OSCE (F17-22) R - G-Y +B power supply Always 10 to 14V
    SEL (F17-21) OSCE (F17-22) W - G-Y Sensor detection signal Smart key at least 3 m away from door --> near door 10 to 14V --> 0V
    CLGI (F17-10) - GND (F17-1) L-B - W-B Signal output to oscillator Smart key at least 3 m away from door --> near door Some Hz --> 0 Hz
    SENS (F17-9) -GND (F17-1) G-W - W-B Lock switch detection signal Outside door handle touched --> not touched 10 to 14V --> 0V
    CLGO (F17-12) -GND (F17-1) L-B - W-B Sensor detection signal All doors locked and ignition switch OFF --> ON Some Hz --> 0 Hz

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

  5. CHECK REAR DOOR LH ECU 
    Fig 10: Identifying Rear Door LH ECU Terminals
    G03002910Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the R12 and R13 ECU connectors.
    2. Measure the resistance and voltage of the wire harness side connectors.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (R13-6) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (R13-1) Body ground V-Y - Body ground +B power supply Always 10 to 14V
      BDR (R13-2) - Body ground R-B - Body ground +B power supply Always 10 to 14V
      SIG (R13-26) - Body ground R-L - Body ground Ignition power supply Ignition switch ON 10 to 14V
      TRG+ (R12-2) - TRG- (R12-28) GR-L - P Lock switch signal Lock switch not pushed --> pushed 10 kΩ or higher --> Below 1 Ω

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

    3. Reconnect the R23 and RB ECU connectors.
    4. Measure the frequency and voltage of the connectors.
    TERMINAL DESCRIPTION AND SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    OSCB (R12-13) -OSCE (R12-27) R - G-Y +B power supply Always 10 to 14V
    SEL (R12-1) OSCE (R12-27) W - G-Y Sensor detection signal Smart key at least 3 m away from door --> near door 10 to 14V --> 0V
    CLGI (R13-22) -GND (R13-6) B - W-B Signal output to oscillator Smart key at least 3 m away from door --> near door Some Hz --> 0 Hz
    SENS (R12-3) -GND (R13-6) G-W - W-B Lock switch detection signal Outside door handle touched --> not touched 10 to 14V --> 0V
    CLGO (R12-23) -GND (R13-6) L-R - W-B Sensor detection signal All doors locked and ignition switch OFF --> ON Some Hz --> 0 Hz

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

  6. CHECK REAR DOOR RH ECU 
    Fig 11: Identifying Rear Door RH ECU Terminals
    G03002911Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the R14 and R15 ECU connectors.
    2. Measure the resistance and voltage of the wire harness side connectors.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      GND (R14-6) - Body ground W-B - Body ground Ground Always Below 1 Ω
      CPUB (R14-1) Body ground V-Y - Body ground +B power supply Always 10 to 14V
      BDR (R14-2) - Body ground R-W - Body ground +B power supply Always 10 to 14V
      SIG (R14-26) - Body ground R-L - Body ground Ignition power supply Ignition switch ON 10 to 14V
      TRG+ (R15-2) -TRG- (R15-28) GR-L - P Lock switch signal Lock switch not pushed --> pushed 10 kΩ or higher --> Below 1 Ω

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

    3. Reconnect the R14 and R15 ECU connectors.
    4. Measure the frequency and voltage of the connectors
    TERMINAL DESCRIPTION AND SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    OSCB (R15-13) -OSCE (R15-27) R - G-Y
    • +B power supply
    • Ground
    		 Always 10 to 14V
    SEL (R15-1) OSCE (R15-27) W - G-Y Sensor detection signal Smart key at least 3 m away from door --> near door 10 to 14V --> 0V
    CLGI (R14-22) -GND (R14-6) L-W - W-B Signal output to oscillator Smart key at least 3 m away from door --> near door Some Hz --> 0 Hz
    SENS (R15-3) -GND (R14-6) G-W - W-B Lock switch detection signal Outside door handle touched --> not touched 10 to 14V --> 0V
    CLGO (R15-23) -GND (R14-6) L-R - W-B Sensor detection signal All doors locked and ignition switch OFF --> ON Some Hz --> 0 Hz

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

  7. CHECK LUGGAGE ROOM J/B ASSY (LUGGAGE ROOM J/B ECU) 
    Fig 12: Identifying Luggage Room J/B Assy (Luggage Room J/B ECU) Terminals
    G03002912Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the LA and LL J/B, L12 and L14 ECU connectors.
    2. Measure the resistance and voltage of the wire harness side connectors.
      TERMINAL DESCRIPTION AND SPECIFIED CONDITION

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      HIC ( LL-1) - Body ground B-W - Body ground +B power supply Always 10 to 14V
      P-GND (LA-5) - Body ground W-B - Body ground Ground Always Below 1 Ω
      SG (L14-5) - Body ground W-B - Body ground Ground Always Below 1 Ω
      LCTY (L12-4) - Body ground G - Body ground Luggage door courtesy switch signal Luggage door is closed --> open 10 kΩ or higher --> Below 1 Ω
      BDCY (L14-8) - Body ground L - Body ground Luggage door lock switch signal Lock switch not pushed --> pushed 10 kΩor higher --> Below 1 Ω
      LPSW (L12-2) - Body ground BR - Body ground Luggage compartment door push switch input Luggage compartment door push switch OFF --> ON 10 kΩ or higher --> Below 1 Ω

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

    3. Reconnect the LA and LL J/B, L12 and L14 ECU connectors.
    4. Measure the resistance of the connector
    TERMINAL DESCRIPTION AND SPECIFIED CONDITION

    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    LCM + (L12-8)-LCM - (L12-1) V- L Luggage door closer motor output Motor operating 10 to 14V

    If the result is not as specified, the luggage room J/B ECU may have a malfunction.

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