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

  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY) 
    GTY948973Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Disconnect the G111 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 Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      G111-14 (NE) - Body ground Input P - Body ground Engine speed signal Always 10 kΩ or higher Engine Condition
      G111-2 (STP1) - Body ground Input V - Body ground Stop light switch signal Brake pedal depressed → Brake pedal released 9 V or higher → 1 V or less Stop Light Switch1
      G113-10 (+B) - G113-11 (E) Input B - W-B Power source Always 11 to 14 V -
      G113-22 (P) - G113-11 (E) Input V - W-B P position signal Shift lever in P → Shift lever not in P 30 kΩ or higher → Below 200 Ω Shift P Signal
      G113-11 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      G113-18 (SSW2) - Body ground Input R - Body ground SSW2 contact signal
      HINT: 
      Backup for SSW1. Behaves the same way as SSW1.      		 Engine switch pushed → Engine switch not pushed Below 15 Ω → 10 kΩ or higher Start Switch2
      G113-16 (SSW1) - Body ground Input LG - Body ground SSW1 contact signal Engine switch pushed → Engine switch not pushed Below 15 Ω → 10 kΩ or higher Start Switch1
      G111-4 (CUTB) - G113-11 (E) Input LG - W-B Dark current cut pin* Always 11 to 14 V -
      G113-5 (SPD) - Body ground Input L - Body ground Vehicle speed signal Always 30 kΩ or higher Vehicle Speed Signal
      1. *: In order to prevent the vehicle battery from being depleted when the vehicle is shipped long distances, a fuse that cuts unnecessary electrical load while the vehicle is being shipped is set in the circuit. If the fuse is removed, the circuit becomes open. If the fuse that is between the vehicle battery and terminal CUTB is removed and the circuit is open, the certification ECU (smart key ECU assembly) changes to a certain control mode (example: the transmission of electric waves every 0.25 seconds that form the detection area stops).
    3. Reconnect the G111 and G113 certification ECU (smart key ECU assembly) connectors.
    4. Measure the voltage and check for pulses according to the value(s) in the table below.
      Tester Connection Input/Output Wiring Color Terminal Description Condition Specified Condition Related Data List Item
      G111-12 (STA) - G113-11 (E) Input W - W-B When starting the engine, this monitors the voltage sent from terminal STAR to the starter relay to judge whether the engine is "being started". With the brake pedal depressed, the engine switch is pressed and held (starter on) → After approximately 1 second has elapsed, the engine switch is released (starter off) 6 V or higher*1 → 1.0 V or less -
      G111-10 (STAR) - G113-11 (E) Input/Output B - W-B Outputs voltage to the starter relay
      • Outputs voltage (12 V) to the starter relay when starting the engine. (Max. 30 seconds. Turns off when an engine speed of 500 rpm or more continues for 500 ms or more.)

      HINT: 
      When Hi is selected, a start request signal (STAR) will not be output even though a start request signal (STSW) is input.      		 With the brake pedal depressed, the engine switch is pressed and held → After approximately 1 second has elapsed, the engine switch is released 6 V or higher*1 → 1.0 V or less -
      Receives neutral start switch (P, N position detection) signal
      • Monitors whether the neutral start switch is on (P or N) or off (other than P or N). Applies voltage via a resistor (large) in the certification ECU (smart key ECU assembly). When the neutral start switch is on, due to the starter relay coil resistance (small) using some of the voltage, the voltage at terminal STAR will be low (2.7 V or less), and when the neutral start switch is off, the voltage will be high (9 V or more).
      		 Perform the following operations except while the engine is cranking:
      • Shift lever in any position other than P or N → Shift lever in P or N (at 20°C (68°F))
      		 9 V or higher → 2.7 V or less Neutral SW/ Clutch SW
      G111-14 (NE) - G113-11 (E) Input P - W-B Engine speed signal Idling (engine warmed up) Pulse generation
      (See waveform 1)      		 Engine Condition
      G111-2 (STP1) - G113-11 (E) Input V - W-B Stop light switch signal Brake pedal released → Brake pedal depressed 1 V or less → 9 V or higher Stop Light Switch1
      G113-23 (SLP) - G113-11 (E)*2 Input P - W-B Steering lock position signal Steering locked → Steering unlocked 11 to 14 V → 1.5 V or less Steering Unlock Switch
      G113-24 (SLR+) - G113-11 (E)*2 Output W - W-B 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 lever is in P.
      		 Pulse generation
      (See waveform 2)      		 -
      G113-22 (P) - G113-11 (E) Input V - W-B P position signal Shift lever in P → Shift lever not in P 9 V or higher → 2.76 V or less Shift P Signal
      G113-18 (SSW2) - G113-11 (E) Input R - W-B SSW2 contact signal
      HINT: 
      Backup for SSW1. Behaves the same way as SSW1.      		 Engine switch not pushed → Engine switch pushed 9 V or higher → 1 V or less Start Switch2
      G113-16 (SSW1) - G113-11 (E) Input LG - W-B SSW1 contact signal Engine switch not pushed → Engine switch pushed 9 V or higher → 1 V or less Start Switch1
      G113-9 (ACCD) - G113-11 (E) Output R - W-B ACC signal Engine switch off → Engine switch on (ACC) 1 V or less → 8.5 V or higher ACC Relay Monitor
      G111-3 (IG1D) - G113-11 (E) Output Y - W-B IG signal Engine switch on (ACC) → Engine switch on (IG) 1 V or less → 9 V or higher IG Relay Monitor (Outside)
      G113-5 (SPD) - G113-11 (E) Input L - W-B Vehicle speed signal Vehicle being driven at approximately 5 km/h (3 mph) Pulse generation
      (See waveform 3)      		 Vehicle Speed Signal
      G113-21 (CLG5) - G113-11 (E) Output R - W-B Output to No. 1 indoor electrical key antenna assembly (front floor) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using door outside handle
      		 Pulse generation
      (See waveform 4)      		 Overhead + Front Room (key diagnostic mode)
      G113-20 (CG5B) - G113-11 (E) Output W - W-B Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using door outside handle
      		 Pulse generation
      (See waveform 4)      		 Overhead + Front Room (key diagnostic mode)
      G112-15 (CLG6) - G113-11 (E) Output Y - W-B Output to No. 2 indoor electrical key antenna assembly (rear floor) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using door outside handle
      		 Pulse generation
      (See waveform 4)      		 Overhead + Rear Room (key diagnostic mode)
      G112-14 (CG6B) - G113-11 (E) Output W - W-B Output to No. 2 indoor electrical key antenna assembly (rear floor) (terminal on opposite side of component from CLG6 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using door outside handle
      		 Pulse generation
      (See waveform 4)      		 Overhead + Rear Room (key diagnostic mode)
      G112-4 (CLG7) - G113-11 (E) Output LG - W-B Output to No. 3 indoor electrical key antenna assembly (inside luggage) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly not inside vehicle
      3. Within 30 seconds of closing any door using door outside handle
      		 Pulse generation
      (See waveform 4)      		 Overhead + Back Door (inside) (key diagnostic mode)
      G112-3 (CG7B) - G113-11 (E) Output L - W-B Output to No. 3 indoor electrical key antenna assembly (inside luggage) (terminal on opposite side of component from CLG7 output terminal) Procedure:
      1. Engine switch off
      2. Electrical key transmitter sub-assembly brought outside detection area but kept inside wireless function operational area
      3. Lock or unlock switch of electrical key transmitter sub-assembly not pressed → pressed
      		 Pulse generation
      (See waveform 4)      		 Overhead + Back Door (inside) (key diagnostic mode)

      HINT: 

      • The waveform of the steering lock actuator motor stopped can be checked without performing any particular operation.
      • The waveform of the steering lock actuator motor operating can be checked if either of the following operations is performed:
        • To unlock the steering, bring the electrical key transmitter sub-assembly into the cabin and turn the engine switch on (ACC) or on (IG).
        • To lock the steering, open a door with the engine switch off and the shift lever in P.
      1. *1: While the engine is cranking, the battery voltage may drop to approximately 6 V.
      2. *2: w/ Steering Lock System
    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 1: Waveform 1
        GTY504944Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection G111-14 (NE) - G113-11 (E)
        Tool Setting 2 V/DIV., 2 ms./DIV.
        Condition Idling (engine warmed up)

        HINT: 

        The wavelength becomes shorter as the engine speed increases.

      2. Waveform 2
        Item Content
        Tester Connection G113-24 (SLR+) - G113-11 (E)*
        Tool Setting 2 V/DIV., 200 ms./DIV.
        Condition Steering lock motor stopped → Steering lock motor operating → Steering lock motor stopped

        *: w/ Steering Lock System

        Fig 2: Waveform 2
        GTY446294Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Steering lock motor not operating
        *b Steering lock motor operating
      3. Waveform 3
        Fig 3: Waveform 3
        GTY514865Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        Item Content
        Tester Connection G113-5 (SPD) - G113-11 (E)
        Tool Setting 5 V/DIV., 20 ms./DIV.
        Condition Vehicle being driven at approximately 20 km/h (12 mph)

        HINT: 

        The wavelength becomes shorter as the vehicle speed increases.

      4. Waveform 4
        Item Content
        Tester Connection G113-21 (CLG5) - G113-11 (E)
        G113-20 (CG5B) - G113-11 (E)
        G112-15 (CLG6) - G113-11 (E)
        G112-14 (CG6B) - G113-11 (E)
        G112-4 (CLG7) - G113-11 (E)
        G112-3 (CG7B) - G113-11 (E)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Condition Procedure:
        1. Engine switch off
        2. Electrical key transmitter sub-assembly not inside vehicle
        3. Within 30 seconds of closing any door using door outside handle
        Fig 4: Waveform 3
        GTY426276Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a For 30 seconds after closing any door using door outside handle
        *b 30 seconds or more have elapsed after closing any door using door outside handle
  2. CHECK STEERING LOCK ECU (STEERING LOCK ACTUATOR ASSEMBLY) (w/ Steering Lock System) 

    Refer to TERMINALS OF ECU [08/2019 - 08/2022]

  3. CHECK ENGINE SWITCH 

    Refer to TERMINALS OF ECU [08/2019 - 08/2022]

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