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Terminals Of Ecu

  1. CHECK CERTIFICATION ECU 
    Fig 1: Identifying Certification ECU Terminals
    G02977102Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D39 and D40 ECU connectors.
    2. Measure the resistance and voltage of each terminal of the wire harness side connector.

      Standard: 

      CERTIFICATION ECU TERMINALS RESISTANCE AND VOLTAGE

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      +B1 (D39-1) - Body ground R - Body ground +B power supply Always 10 to 14 V
      TSW1 (D39-3) - Body ground LG - Body ground Trigger switch (Lock switch) signal Front lock switch LH not pushed --> Pushed 10 kΩ or higher --> Below 1 Ω
      TSW2 (D39-4) - Body ground GR - Body ground Trigger switch (Lock switch) signal Front lock switch RH not pushed --> Pushed 10 kΩ or higher --> Below 1 Ω
      TSW5 (D39-7) - Body ground G - Body ground Luggage compartment open switch signal Luggage compartment open switch not pushed --> Pushed 10 kΩ or higher --> Below 1 Ω
      LIN (D39-10) - Body ground BR - Body ground LIN line Always 10 kΩ or higher
      E (D39-17) - Body ground W-B - Body ground Ground Always Below 1 Ω
      IG (D39-18) - Body ground Y - Body ground Ignition power supply Engine switch OFF --> ON (IG) Below 1 V --> 10 to 14 V
      ACC (D39-19) - Body ground SB - Body ground ACC power supply Engine switch OFF --> ON (ACC) Below 1 V --> 10 to 14 V
      TSW3 (D40-25) - Body ground Y - Body ground Trigger switch (Lock switch) signal Rear lock switch LH not pushed --> Pushed 10 kΩ or higher --> Below 1 Ω
      TSW4 (D39-26) - Body ground GR - Body ground Trigger switch (Lock switch) signal Rear lock switch RH not pushed --> Pushed 10 kΩ or higher --> Below 1 Ω
      MPX1 (D39-27) - Body ground R - Body ground MPX line Always 10 kΩ or higher
      MPX2 (D39-28) - Body ground B - Body ground MPX line Always 10 kΩ or higher
      AGND (D39-40) - Body ground V - 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 D39 and D40 ECU connectors.
    4. Measure the voltage and frequency of each terminal of the connector.

      Standard: 

      CERTIFICATION ECU TERMINALS VOLTAGE AND FREQUENCY

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      SEL1 (D39-5) - Body ground P - Body ground Outside handle antenna signal Move the key more than 5 m (16.4 ft) away from the front door LH. --> Bring it to the outside handle. 10 to 14 V --> Below 1 V
      SEL2 (D39-6) - Body ground V - Body ground Outside handle antenna signal Move the key more than 5 m (16.4 ft) away from the front door RH. --> Bring it to the outside handle. 10 to 14 V --> Below 1 V
      TXCT (D39-8) - Body ground GR - Body ground Transponder key amplifier output signal Key is not in the cabin. --> Have the key outside the cabin and open the driver's door. Below 1 V --> Pulse generation (see WAVEFORM 1 (REFERENCE) )
      CODE (D39-9) - Body ground W - Body ground Transponder key amplifier communication signal Key is not in the cabin. --> Have the key outside the cabin and open the driver's door. Below 1 V --> Pulse generation (see WAVEFORM 2 (REFERENCE) )
      CG5B (D39-12) - CLG5 (D39-11) W - R Cabin oscillator front signal Engine switch OFF --> ON (IG) after more than 30 seconds of driver door's opening or closing. Some Hz --> 0 Hz
      CG6B (D39-14) - CLG6 (D39-13) SB - R Cabin oscillator rear signal Engine switch OFF --> Close all the doors with the key in the cabin and turn the lock switch on. Some Hz --> 0 Hz
      CG7B (D39-16) - CLG7 (D39-15) O - G Luggage compartment oscillator inner signal Engine switch OFF --> Turn the luggage compartment lock switch on with all the doors unlocked. Some Hz --> 0 Hz
      SEN1 (D39-22) - Body ground O - Body ground Outside handle antenna signal Front door LH outside handle is not held. --> Front door LH outside handle is held. 10 to 14 V --> Below 1 V
      SEN2 (D39-23) - Body ground B - Body ground Outside handle antenna signal Front door LH outside handle is not held. --> Front door LH outside handle is held. 10 to 14 V --> Below 1 V
      RCO (D39-29) - Body ground G - Body ground Tuner power source Engine switch OFF, all doors closed and key switch OFF --> ON Below 1 V --> 4.6 to 5.4 V
      VC5 (D39-30) - Body ground O - Body ground Transponder key amplifier power supply Key is not in the vehicle. Have the key outside the cabin and open the driver's door. Below 1 V --> 4.6 to 5.4 V
      CG8B (D39-32) - CLG8 (D39-31) P - LG Luggage compartment oscillator outer signal Engine switch OFF --> Turn the luggage compartment lock switch on with all the doors unlocked. Some Hz --> 0 Hz
      CLG1 (D39-33) - Body ground GR - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      CG1B (D39-34) - Body ground V - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      CLG2 (D39-35) - Body ground LG - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      CG2B (D39-36) - Body ground BR - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      ASEL (D39-37) - Body ground V - Body ground Tuner select signal Turn the luggage compartment lock switch on with all the doors unlocked. Below 1 V --> 4.5 to 6.0 V
      RDA (D39-38) - Body ground Y - Body ground Tuner input signal Engine switch OFF, all doors closed, the key is not in the action area. --> The key is in the action area. 10 to 14 V --> Below 1 V
      RSSI (D39-39) - Body ground R - Body ground Tuner radio wave detection signal Engine switch OFF, all doors closed, the key is not in the action area. --> The key is in the action area. 10 to 14 V --> Below 1 V
      SEL3 (D40-1) - Body ground L - Body ground Outside handle antenna signal Move the key more than 5 m (16.4 ft) away from the rear door LH. --> Bring it to the outside handle. 10 to 14 V --> Below 1 V
      SEL4 (D40-2) - Body ground B - Body ground Outside handle antenna signal Move the key more than 5 m (16.4 ft) away from the rear door RH. --> Bring it to the outside handle. 10 to 14 V --> Below 1 V
      CLG3 (D40-8) - Body ground W - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      CG3B (D40-9) - Body ground B - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      CLG4 (D40-10) - Body ground V - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      CG4B (D40-11) - Body ground P - Body ground Door oscillator output signal All doors closed (locked), engine switch OFF --> ON (IG) Some Hz --> 0 Hz
      SEN4 (D40-27) - Body ground V - Body ground Outside handle antenna signal Rear door LH outside handle is not held. --> Rear door LH outside handle is held. 10 to 14 V --> Below 1 V
      SEN3 (D40-28) - Body ground BR - Body ground Outside handle antenna signal Rear door LH outside handle is not held. --> Rear door LH outside handle is held. 10 to 14 V --> Below 1 V

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

    5. Inspect using oscilloscope.

      Wareform 1 (Reference): 

      WAREFORM 1 (REFERENCE)

      Terminal TXCT - Body ground
      Tool Setting 2 V/DIV, 10 ms/DIV
      Condition The key is not in the cabin.
      Fig 2: Wareform 1
      G02977103Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Inspect using oscilloscope.

      Wareform 2 (Reference): 

      WAREFORM 2 (REFERENCE)

      Terminal CODE - Body ground
      Tool Setting 2 V/DIV, 20 ms/DIV
      Condition The key is not in the cabin.
      Fig 3: Wareform 2
      G02977104Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  2. CHECK ID CODE BOX 
    Fig 4: Identifying Terminals Of D29 ID Code Box Connector
    G02977105Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D29 ID code box connector.
    2. Measure the resistance of each terminal of the wire harness side connector.

      Standard: 

      D29 ID CODE BOX CONNECTOR RESISTANCE

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      LIN (D29-3) - Body ground V - Body ground LIN line Always 10 kΩ or higher
      GND (D29-8) - Body ground W-B - Body ground Ground Always Below 1 Ω
      MPX8 (D29-1) - Body ground W - Body ground MPX line Always 10 kΩ or higher

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

    3. Reconnect the D29 ECU connector.
    4. Measure the voltage of each terminal of the connector.

      Standard: 

      D29 ECU CONNECTOR SPECIFIED CONDITION

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      EFIO (D29-6) - Body ground L - Body ground ECM output signal Engine switch ON (IG) Pulse generation (see WAVEFORM 1 (REFERENCE) )
      EFII (D29-5) - Body ground BR - Body ground ECM input signal Always Pulse generation (see WAVEFORM 2 (REFERENCE) )

      If the result is not as specified, the ID code box may have a malfunction.

    5. Inspect using oscilloscope.

      Waveform 1 (Reference): 

      WAVEFORM 1 (REFERENCE)

      Terminal EFIO - Body ground
      Tool Setting 10 V/DIV, 100 ms/DIV
      Condition Engine switch ON (IG)
      Fig 5: Waveform 1
      G02977106Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Inspect using oscilloscope.

      Waveform 2 (Reference): 

      WAVEFORM 2 (REFERENCE)

      Terminal EFII - Body ground
      Tool Setting 10 V/DIV, 100 ms/DIV
      Condition Always
      Fig 6: Waveform 2
      G02977107Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. POWER SOURCE CONTROL ECU 
    Fig 7: Identifying Terminals Of Power Source Control ECU D44 Connector
    G02977108Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the D44 ECU connector.
    2. Measure the resistance of each terminal of the wire harness side connector.

      Standard: 

      POWER SOURCE CONTROL ECU D44 CONNECTOR RESISTANCE

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      MPX1 (D44-7) - Body ground B - Body ground MPX line Always 10 kΩ or higher
      MPX2 (D44-24) - Body ground LG - Body ground MPX line Always 10 kΩ or higher
      LINI (D44-30) - Body ground BR - Body ground LIN line Always 10 kΩ or higher

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

    3. Reconnect the D44 ECU connector.
    4. Measure the voltage and frequency of each terminal of the connector.

      Standard: 

      POWER SOURCE CONTROL ECU D44 CONNECTOR VOLTAGE AND FREQUENCY

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      SLR+ (D44-32) - GND2 (D44-6) BR - W-B Power source for steering lock actuator Steering lock motor operate --> not operate Below 1 V --> 10 to 14 V
      SLP (D44-26) - GND2 (D44-6) GR - W-B Steering lock actuator UNLOCK position signal Steering is locked --> released Below 1 V --> 10 to 14 V
      SPD (D44-19) - GND2 (D44-6) W - W-B Vehicle speed signal Engine switch ON (IG), Rotate driving wheel slowly Pulse generation
      TACH (D44-2) - Body ground L - Body ground Engine revolution speed signal Idling Pulse generation
      P (D44-5) - Body ground P - Body ground Shift lock signal Shift lever except P position Below 1.5 V
      CTSW (D44-31) - Body ground O - Body ground Starter assist signal Cranking Below 1.5 V
      STSW (D44-39) - Body ground R - Body ground Starter request signal Brake pedal depressed, Shift lever P or N position, Engine switch ON (ACC, IG, START) 10 to 14 V
      STR1 (D44-17) - GND2 (D44-6) SB - W-B Park/neutral position switch Shift lever P or N position, Engine switch START 10 to 14 V
      STR2 (D44-15) - GND2 (D44-6) B - W-B Starter signal Shift lever P or N position, Engine switch START 10 to 14 V
      INDS (D44-4) - Body ground Y - Body ground Vehicle condition signal Brake pedal depressed, Shift lever P or N position, Engine switch ON (ACC, IG, START) 10 to 14 V
      INDW (D44-13) - Body ground GR - Body ground Warning signal Smart key system malfunction Pulse generation
      SWIL (D44-36) - Body ground R - Body ground Illumination signal Light control switch TAIL or HEAD 10 to 14 V

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

    5. Reconnect the D44 ECU connector.
    6. Measure the voltage of the connectors.

      Standard: 

      POWER SOURCE CONTROL ECU D44 CONNECTOR VOLTAGE

      Symbols (Terminals No.) Wiring Color Terminal Description Condition Specified Condition
      SLP1 (D44-4) - GND (D14-1) GR - W-B Steering lock actuator UNLOCK position signal Steering is locked --> released Below 1 V --> 10 to 14 V
      IGE (D44-3) - GND (D14-1) BR - W-B Power source for steering lock actuator Steering lock motor operate --> not operate Below 1 V --> 10 to 14 V

      If the result is not as specified, the power source control ECU may have a malfunction.

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