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Terminals Of Ecu

  1. CHECK SMART KEY ECU 
    Fig 1: Identifying Smart Key ECU
    G02617555Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the S11 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      +B1 (S11-1)-Body ground R - Body ground +B power supply Always 10 to 14 V
      IG (S11-18)-Body ground B - Body ground Ignition power supply Power switch OFF 0 V
      IG (S11-18)-Body ground B - Body ground Ignition power supply Power switch ON (IG) 10 to 14 V
      E (S11-17)-Body ground W-B - Body ground Ground Always Below 1 Ω
      TSW1 (S11-5)-Body ground B - Body ground Outside door handle LH lock switch signal Lock switch OFF 10 kΩ or higher
      TSW1 (S11-5)-Body ground B - Body ground Outside door handle LH lock switch signal Lock switch ON Below 1 Ω
      TSW2 (S11-6)-Body ground R - Body ground Outside door handle RH lock switch signal Lock switch OFF 10 kΩ or higher
      TSW2 (S11-6)-Body ground R - Body ground Outside door handle RH lock switch signal Lock switch ON Below 1 Ω
      TSW6 (S11-8)-Body ground B - Body ground Back door lock switch signal Back door lock switch OFF 10 kΩ or higher
      TSW6 (S11-8)-Body ground B - Body ground Back door lock switch signal Back door lock switch ON Below 1 Ω
      CNSL (S11-25)-Body ground W-B - Body ground Smart entry system cancel switch signal Smart key cancel switch OFF 10 kΩ or higher
      CNSL (S11-25)-Body ground W-B - Body ground Smart entry system cancel switch signal Smart key cancel switch ON Below 1 Ω

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

    3. Reconnect the S11 ECU connector.
    4. Measure the voltage and frequency of the connector.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CLG1 (S11-13)-E (S11-17) P-W-B Driver door electrical key oscillator sensor signal All doors locked by wireless operation from outside vehicle and power switch OFF Some Hz
      CLG1 (S11-13)-E (S11-17) P-W-B Driver door electrical key oscillator sensor signal All doors locked by wireless operation from outside vehicle and power switch ON (IG) 0 Hz
      CLG2 (S11-14)-E (S11-17) R-W-B Passenger door electrical key oscillator sensor signal All doors locked by wireless operation from outside vehicle and power switch OFF Some Hz
      CLG2 (S11-14)-E (S11-17) R-W-B Passenger door electrical key oscillator sensor signal All doors locked by wireless operation from outside vehicle and power switch ON (IG) 0 Hz
      CLG5 (S11-36)-E (S11-17) G-W-B Indoor electrical key oscillator sensor signal 30 seconds after driver side door opened and closed, power switch OFF Some Hz
      CLG5 (S11-36)-E (S11-17) G-W-B Indoor electrical key oscillator sensor signal 30 seconds after driver side door opened and closed, power switch ON (IG) 0 Hz
      CLG7 (S11-38)-E (S11-17) BR-W-B Luggage electrical key oscillator inner sensor signal 30 seconds after driver side door opened and closed, power switch OFF Some Hz
      CLG7 (S11-38)-E (S11-17) BR-W-B Luggage electrical key oscillator inner sensor signal 30 seconds after driver side door opened and closed, power switch ON (IG) 0 Hz
      CLG8 (S11-39)-E (S11-17) O-W-B Luggage electrical key oscillator outer sensor signal Back door opener switch OFF Some Hz
      CLG8 (S11-39)-E (S11-17) O-W-B Luggage electrical key oscillator outer sensor signal Back door opener switch ON 0 Hz
      SEL1 (S11-23)-E (S11-17) Y-W-B Driver door electrical key oscillator detection signal Smart key at least 3 m (9.8 ft) away from door 10 to 14 V
      SEL1 (S11-23)-E (S11-17) Y-W-B Driver door electrical key oscillator detection signal Near outside door handle LH 0 V
      SEL2 (S11-24)-E (S11-17) B-W-B Passenger door electrical key oscillator detection signal Smart key at least 3 m (9.8 ft) away from door 10 to 14 V
      SEL2 (S11-24)-E (S11-17) B-W-B Passenger door electrical key oscillator detection signal Near outside door handle RH 0 V
      SEN1 (S11-21)-E (S11-17) R-W-B Lock switch detection signal Outside door handle LH touched 10 to 14 V
      SEN1 (S11-21)-E (S11-17) R-W-B Lock switch detection signal Outside door handle LH not touched 0 V
      SEN2 (S11-22)-E (S11-17) W-W-B Lock switch detection signal Outside door handle RH touched 10 to 14 V
      SEN2 (S11-22)-E (S11-17) W-W-B Lock switch detection signal Outside door handle RH not touched 0 V
      RDA3 (S11-29) - E (S11-17) L-W-B Door control receiver input signal With power switch OFF, no smart key and all doors closed, smart key switch OFF Below 1 V
      RDA3 (S11-29) - E (S11-17) L-W-B Door control receiver input signal With power switch OFF, no smart key and all doors closed, smart key switch ON Approx. 6 to 7 V
      PRG (S11-28) - E (S11-17) B-W-B Door control receiver output signal With power switch OFF, no smart key and all doors closed, smart key switch OFF Below 1 V
      PRG (S11-28) - E (S11-17) B-W-B Door control receiver output signal With power switch OFF, no smart key and all doors closed, smart key switch ON Approx. 6 to 7 V
      RCO (S11-12) - E (S11-17) L-W-B Power source With power switch OFF, no smart key and doors closed, smart key switch OFF 0 to 5 V
      RCO (S11-12) - E (S11-17) L-W-B Power source With power switch OFF, no smart key and doors closed, smart key switch ON 5 V
      RSSI (S11-11) - E (S11-17) V-W-B Door control receiver output signal Power switch OFF, all doors closed and smart key switch OFF 0 to 5 V
      RSSI (S11-11) - E (S11-17) V-W-B Door control receiver output signal Power switch OFF, all doors closed and smart key switch ON Below 1 V
      RDA (S11-10) - E (S11-17) GR-W-B Door control receiver input signal With power switch OFF, no smart key and all doors closed, smart key switch OFF Below 1 V
      RDA (S11-10) - E (S11-17) GR-W-B Door control receiver input signal With power switch OFF, no smart key and all doors closed, smart key switch ON Approx. 6 to 7 V
      KSW (S11-4) - E (S11-17) Y-W-B Halfway switch input signal No key in key slot 10 to 14 V
      KSW (S11-4) - E (S11-17) Y-W-B Halfway switch input signal Key inserted 0 V

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

  2. CHECK INSTRUMENT PANEL J/B ASSY (MULTIPLEX NETWORK BODY ECU) 
    Fig 2: Identifying Instrument Panel J/B Assembly (Multiplex Network Body ECU)
    G02617556Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the 1A, 1B and 1E J/B connectors.
    2. Measure the voltage and resistance of the wire harness side connector.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      ECUB (1A-30) - Body ground R - Body ground +B (ECUB) power supply Always 10 to 14 V
      ALTB (1B-1) - Body ground W - Body ground +B (power system, generator system) power supply Always 10 to 14 V
      GND (1E-17) - 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 1A, 1B and 1E J/B ECU connectors.
    4. Measure the voltage of the connectors.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      PRG (B7-24) - GND (1E-17) B - W-B Door control receiver output signal With power switch OFF, no smart key and all doors closed, smart key switch OFF 0 to 5 V
      PRG (B7-24) - GND (1E-17) B - W-B Door control receiver output signal With power switch OFF, no smart key and all doors closed, smart key switch ON 0 V
      RDA (B7-23) - GND (1E-17) L-W-B Door control receiver input signal With power switch OFF, no smart key and all doors closed, smart key switch OFF Below 1 V
      RDA (B7-23) - GND (1E-17) L - W-B Door control receiver input signal With power switch OFF, no smart key and all doors closed, smart key switch ON Approx. 6 to 7 V

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

  3. CHECK TRANSPONDER KEY ECU 
    Fig 3: Identifying Transponder Key ECU
    G02617557Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the T5 ECU connector.
    2. Measure the resistance and voltage of the wire harness side connector.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CPUB (T5-3) - GND (T5-22) L - W-B Battery Always 10 to 14 V
      IG (T5-4) - GND (T5-22) O - W-B Power switch (IG) Power switch OFF 0 V
      IG (T5-4) - GND (T5-22) O - W-B Power switch (IG) Power switch ON (IG) 10 to 14 V
      CUWS (T5-5) -GND (T5-22) B - W-B Halfway switch No key in key slot 10 kΩ or higher
      CUWS (T5-5) -GND (T5-22) B - W-B Halfway switch Key inserted Below 1 Ω
      AGND (T5-7) - GND (T5-22) P - W-B Ground Always Below 1 Ω
      GND (T5-22) - 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 T5 ECU connector.
    4. Measure the voltage of the connector.

      Standard: 

      TERMINAL DESCRIPTION SPECIFIED CONDITION CHART

      Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
      CUWS (T5-5) -GND (T5-22) B - W-B Halfway switch No key in key slot 10 to 14 V
      CUWS (T5-5) -GND (T5-22) B - W-B Halfway switch Key inserted Below 1 V
      VC5 (T5-20) - GND (T5-22) Y - W-B Power source No key in key slot 0 V
      VC5 (T5-20) - GND (T5-22) Y - W-B Power source Key inserted 4.6 to 5.4 V
      CODE (T5-21) - AGND (T5-7) L - P Transponder key amplifier communication signal No key in key slot --> Key inserted Pulse generation (see waveform 1)
      TXCT (T5-6) - AGND (T5-7) LG-P Transponder key amplifier communication signal No key in key slot --> Key inserted Pulse generation (see waveform 2)
      HEVO (T5-19) - GND (T5-22) W - W-B Hybrid vehicle control ECU output signal No key in key slot --> Key inserted Pulse generation (see waveform 3)
      HEV1 (T5-18) - GND (T5-22) R - W-B Hybrid vehicle control ECU input signal Always Pulse generation (see waveform 4)

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

    5. Inspect using an oscilloscope.

      Waveform 1 (Reference): 

      WAVEFORM 1 (REFERENCE)

      Terminal TXCT - GND
      Tool Setting 2.0 V/DIV., 10 ms/DIV.
      Condition No key in key slot --> Key inserted
      Fig 4: Waveform 1
      G02617558Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Waveform 2 (Reference): 

      WAVEFORM 2 (REFERENCE)

      Terminal CODE - GND
      Tool Setting 2.0 V/DIV., 20 ms/DIV.
      Condition No key in key slot --> Key inserted
      Fig 5: Waveform 2
      G02617559Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Waveform 3 (Reference): 

      WAVEFORM 3 (REFERENCE)

      Terminal HEVO-GND
      Tool Setting 10 V/DIV., 100 ms/DIV.
      Condition No key in key slot --> Key inserted
      Fig 6: Waveform 3
      G02617560Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      Waveform 4 (Reference): 

      WAVEFORM 4 (REFERENCE)

      Terminal HEV1 - GND
      Tool Setting 10 V/DIV., 100 ms/DIV.
      Condition Always
      Fig 7: Waveform 4
      G02617561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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