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Terminals Of Ecu [08/2019 - 08/2022]

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    Fig 1: Smart Key ECU Assembly Connector End View
    GTY949015Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the G111, G112 and G113 certification ECU (smart key ECU assembly) connectors.
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      G113-10 (+B) - G113-11 (E) B - W-B Input Power source Always 11 to 14 V -
      G113-11 (E) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
    3. Reconnect the G113, G112 and G111 certification ECU (smart key ECU assembly) connectors.
    4. Measure the voltage and resistance and check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      G113-23 (SLP) - G113-11 (E) P - W-B Input Steering lock position signal Steering locked → Steering unlocked 11 to 14 V → 1.5 V or less Power Source Control
      1. Steering Unlock Switch
      G113-24 (SLR+) - G113-11 (E) W - W-B Output Steering lock motor operation command signal
      (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly))      		 When a door is opened, the steering lock motor will be operated if all of the following conditions are met:
      • The steering is unlocked.
      • The engine switch is off.
      • The shift state is park (P).
      		 Pulse generation
      (See waveform 1)      		 -
      G113-6 (LIN) - G113-11 (E) LG - W-B Input/Output LIN communication line Engine switch on (IG) Pulse generation Smart Access
      1. Steering Lock Start Cond
      G113-22 (P) - G113-11 (E) V - W-B Input P position signal Shift state park (P) → Shift state not park (P) 9 V or higher → 2.76 V or less Power Source Control
      1. Shift P Signal
    5. Using an oscilloscope, check the waveform of the ECU.
      NOTE:

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1
        Fig 2: Waveform 2
        GTY446294Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Steering lock motor not operating
        *b Steering lock motor operating
        Item Content
        Tester Connection G113-24 (SLR+) - G113-11(E)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition When a door is opened, the steering lock motor will be operated if all of the following conditions are met:
        • The steering is unlocked.
        • The engine switch is off.
        • The shift state is park (P).
  2. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) 
    Fig 3: Steering Lock Actuator Assembly Connector End View
    GTY954151Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the steering lock ECU (steering lock actuator assembly) connector.
    2. Measure the voltage and resistance according to the value(s) in the table below.

      HINT: 

      Measure the values on the wire harness side with the connector disconnected.

      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      G23-1 (GND) - Body ground W-B - Body ground - Ground Always Below 1 Ω -
      G23-6 (IG2) - G23-1 (GND) W - W-B Input Power source mode signal Engine switch off → Engine switch on (IG) Below 1 V → 11 to 14 V -
      G23-7 (B) - Body ground G - Body ground Input Power source Always 11 to 14 V -
    3. Reconnect the G23 steering lock ECU (steering lock actuator assembly) connector.
    4. Measure the voltage and check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Input/Output Terminal Description Condition Specified Condition Related Data List Item
      G23-4 (SLP1) - G23-1 (GND) L - W-B Output Steering lock bar position signal (output signal from steering unlock sensor) Steering locked → unlocked 11 to 14 V → Below 1.5 V Smart Access
      1. Sensor Value
      G23-5 (LIN) - G23-1 (GND) G - W-B Input/Output LIN communication line Engine switch on (IG) Pulse generation Smart Access
      1. Steering Lock Start Cond
    5. Check for pulses according to the value(s) in the table below.
      Tester Connection Wiring Color Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      G23-3 (IGE) - G23-1 (GND) W - W-B Input Steering lock motor activation command signal Any door opened when following conditions are met, and then steering lock motor activated:
      • Shift state park (P)
      • Steering lock unlocked in advance by carrying key and turning engine switch on (IG)
      • After above conditions are met, engine switch turned off
      		 Pulse generation
      (see waveform 1)      		 Smart Access
      • Power Supply Short
      • Unlock Request Receive
      • Lock Request Receive

      HINT: 

      • When taking measurements when the lock motor is stopped, it is not necessary to perform any operations.
      • In order to take measurements when the lock motor is operating, perform either of the following operations:
        • To unlock the steering, carry the key and turn the engine switch on (ACC) or on (IG).
        • To lock the steering, turn the engine switch off with the shift state park (P), and then open a door.
    6. Using an oscilloscope, check the waveform of the ECU.
      NOTE:

      The oscilloscope waveform shown in the illustration is an example for reference only. Noise, chattering, etc. are not shown.

      1. Waveform 1
        Fig 4: Waveform
        GTY446298Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Steering lock motor not operating
        *b Steering lock motor operating
        Item Content
        Tester Connection G23-3 (IGE) - G23-1 (GND)
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Any door opened when following conditions are met, and then steering lock motor activated:
        • Shift state park (P)
        • Steering lock unlocked in advance by carrying key and turning engine switch on (IG)
        • After above conditions are met, engine switch turned off
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