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Terminals Of Ecu

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  1. CHECK POWER SWITCH 
    Fig 1: Identifying L36 Power Switch Connector Terminals
    G04944569Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L36 switch connector.
    2. Measure the resistance according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L36-5 (GND) - Body ground W - 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 L36 switch connector.
    4. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L36-8 (AGND) - Body ground L - Body ground Ground Always Below 1 Ω
      L36-14 (VC5) - L36-8 (AGND) V-L Power supply Key is not in cabin Below 1 V
      Power switch is pressed* 4 6 to 5 4 V
      L36-10 (CODE) - L36-8 (AGND) W-L Demodulated signal of key code data Key is not in cabin Below 1 V
      Power switch is pressed and key is hold close to power switch* Pulse generation (see  ewaveform 1)
      L36-9 (TXCT) - L36-8 (AGND) O-L Key code output signal Key is not in cabin Below 1 V
      Power switch is pressed and key is hold close to power switch* Pulse generation (see  fwaveform 2)
      HINT:
      *: Remove the key's battery before performing this inspection.

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

    5. Using an oscilloscope, check waveform 1.

      Waveform 1 (Reference): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No. (Symbols) L36-10 (CODE) - L36-8 (AGND)
      Tool Setting 2V/DIV, 20msec/DIV
      Condition Power switch is pressed and key is held close to power switch*
      HINT.
      *: Remove the key's battery before performing this inspection.
      Fig 2: Oscilloscope Waveform Graph 1
      G04944570Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Using an oscilloscope, check waveform 2.

      Waveform 2 (Reference): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No. (Symbols) L36-9 (TXCT) - L36-8 (AGND)
      Tool Setting 2V/DIV, 20msec/DIV
      Condition Power switch is pressed and key is held close to power switch*
      HINT
      *: Remove the key's battery before performing this inspection.
  2. CHECK CERTIFICATION ECU 
    Fig 3: Oscilloscope Waveform Graph 2
    G04944574Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    Fig 4: Identifying L15 And L16 Certification ECU Connector Terminals
    G04944572Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L15 ECU connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-17 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L15-1 (+B1) - L15-17 (E) L-W-B +B power supply Always 11 to 14 V
      L15-18 (IG) - L15-17 (E) L-W-B Ignition power supply Power switch OFF Below 1 V
      Power switch ON 11 to 14 V

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

    3. Reconnect the L15 E DU connector.
    4. Measure the resistance and voltage according to the value(s) in the table below
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L15-40 (AGND) - Body ground L - Body ground Power switch ground Always Below 1 Ω
      L15-30 (VC5) - L15-40 (AGND) V-L Power switch power supply Key is not in cabin Below 1 V
      Power switch is pressed* 4 6 to 5 4 V
      L15-9 (CODE) - L15-40 (AGND) W-L Power switch CODE input Key is not in cabin Below 1 V
      Power switch is pressed and key is hold close to power switch* Pulse generation (see  ewaveform 1)
      L15-8 (TXCT) - L15-40 (AGND) O-L Power switch TX output Key is not in cabin Below 1 V
      Power switch is pressed and key is hold close to power switch* Pulse generation (see  fwaveform 2)
      HINT
      * Remove the key's battery before performing this inspection

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

    5. Using an oscilloscope, check waveform 1.

      Waveform 1 (Referenece): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No (Symbols) L15-9 (CODE) - L15-40 (AGND)
      Tool Setting 2V/DIV, 20 msec/DIV
      Condition Power switch is pressed and key is held close to power switch*
      HINT:
      * Remove the key's battery before performing this inspection
      Fig 5: Oscilloscope Waveform Graph 1
      G04944570Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Using an oscilloscope, check waveform 2.

      Waveform 2 (Referenece): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No (Symbols) L15-8 (TXCT) - L15-40 (AGND)
      Tool Setting 2V/DIV, 20msec/DIV
      Condition Power switch is pressed and key is held close to power switch*
      HINT
      *. Remove the key's battery before performing this inspection
      Fig 6: Oscilloscope Waveform Graph 2
      G04944574Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  3. CHECK ID CODE BOX 
    Fig 7: Identifying L32 ID Code Box Connector Terminals
    G04944575Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L32 box connector.
    2. Measure the resistance and voltage according to the value(s) in the table below
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L32-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L32-1 (+B) - L32-8 (GND) 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 L32 box connector
    4. Measure the voltage according to the value(s) in the table below
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L32-5 (EFII) - L.32-8 (GND) B-W-B Hybrid vehicle control ECU input signal Power switch OFF Below 1 V
      Power switch ON (IG) Pulse generation (see  ewaveform 1)
      L32-6 (EFIO) - L32-8 (GND) L-W-B Hybrid vehicle control ECU output signal Power switch OFF Below 1 V
      Power switch ON (IG) Pulse generation (see  fwaveform 2)

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

    5. Using an oscilloscope, check waveform 1

      Waveform 1 (Reference): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No (Symbols) L32-5 (EFII) - L32-8 (GND)
      Tool Setting 10 V/DIV, 100 msec/DIV
      Condition Power switch ON (IG)
      Fig 8: Oscilloscope Waveform Graph 1
      G04944576Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    6. Using an oscilloscope, check waveform 2.

      Waveform 2 (Reference): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No (Symbols) L32-6 (EFIO) - L32-8 (GND)
      Tool Setting 10V/DIV, 100 msec/DIV
      Condition Power switch ON (IG)
      Fig 9: Oscilloscope Waveform Graph 2
      G04944577Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
  4. CHECK MAIN BODY ECU (DRIVER SIDE JUNCTION BLOCK) 
    Fig 10: Identifying Main Body ECU Connector Terminals (Driver Side Junction Block)
    G04943821Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the DA and DF ECU connectors
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      DA-40 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DA-41 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      DF-1 (ACC) - DA-40 (GND2) B-W-B ACC power supply Power switch OFF Below 1 V
      Power switch ON (ACC) 11 to 14 V
      DF-1 (IG) - DA-40 (GND2) B-W-B IG power supply Power switch OFF Below 1 V
      Power switch ON (IG) 11 to 14 V

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

  5. CHECK STEERING LOCK ACTUATOR (STEERING LOCK ECU) 
    Fig 11: Identifying L33 Steering Lock Actuator Connector Terminals (Steering Lock ECU)
    G04944579Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the L33 ECU connector.
    2. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      L33-2 (SGND) - Body ground BR - Body ground Ground Always Below 1 Ω
      L33-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L33-7 (B) - Body ground P - Body ground +B power supply Always 11 to 14 V
      L33-6 (IG2) - Body ground L - Body ground Ignition power supply Power switch OFF Below 1 V
      Power switch ON (IG) 11 to 14 V

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

  6. CHECK HYBRID VEHICLE CONTROL ECU 
    Fig 12: Identifying Hybrid Vehicle Control ECU Connector Terminals
    G05782551Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the resistance and voltage according to the value(s) in the table below.
      TERMINAL DESCRIPTION CHART

      Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
      A75-7 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A75-6 (E12) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E55-6 (GND2) - Body ground W-B - Body ground Ground Always Below 1 Ω
      E55-7 (GND1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A74-1 (BATT) - A75-7(E1) B-W - W-B Battery (for measuring battery voltage and for hybrid vehicle control ECU memory) Always 11 to 14 V
      A76-1 (+B1) - A75-7 (E1) B-W-B Power source of hybrid vehicle control ECU Power switch OFF Below 1 V
      Power switch ON (IG) 11 to 14 V
      A76-2 (+B2) - A75-7 (E1) L-W-B Power source of hybrid vehicle control ECU Power switch OFF Below 1 V
      Power switch ON (IG) 11 to 14 V
      A75-32 (IMI) - A75-7 (E1) L-W-B ID code box input signal Power switch OFF Below 1 V
      Power switch ON (IG) Pulse generation (see  bwaveform 1)
      A75-33 (IMO) - A75-7 (E1) B-W-B ID code box output signal Power switch OFF Below 1 V
      Power switch ON (IG) Pulse generation (see  cwaveform 2)
    2. Using an oscilloscope, check waveform 1.

      Waveform 1 (Reference): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No (Symbols) A75-32 (IMI) - A75-7 (E1)
      Tool Setting 10V/DIV, 100 msec/DIV
      Condition Power switch ON (IG)
      Fig 13: Oscilloscope Waveform Graph 1
      G04944581Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    3. Using an oscilloscope, check waveform 2.

      Waveform 2 (Reference): 

      WAVEFORM REFERENCE CHART

      Item Content
      Terminal No (Symbols) A75-33 (IMO) - A75-7(E1)
      Tool Setting 10V/DIV, 100 msec/DIV
      Condition Power switch ON (IG)
      Fig 14: Oscilloscope Waveform Graph 2
      G04944582Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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