PUSH-BUTTON START TERMINALS OF ECU


  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A004G3UE02

    1. Disconnect the F86 and F88 connectors.

    2. Measure the voltage and resistance according to the value(s) in the table below.

      Tech Tips

      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
      F88-2 (+B) - Body ground Input BE - Body ground Power source Power switch off 11 to 14 V -
      F88-10 (CUTB) - F88-11 (E) Input Y - BR Dark current cut pin* Power switch off 11 to 14 V -
      F88-9 (IG2D) - Body ground Output L - Body ground IG2 signal 20°C (68°F) Approximately 302.97 Ω IG2 Relay Monitor(Outside)
      F88-11 (E) - Body ground - BR - Body ground Ground Always Below 1 Ω -
      F88-18 (STP1) - Body ground Input R - Body ground Stop light switch signal Brake pedal released → Brake pedal depressed 1 V or less → 9 V or higher Stop Light Switch1
      F86-4 (ACCD) - Body ground Output L - Body ground ACC signal 20°C (68°F) 81.49 to 118.98 Ω ACC Relay Monitor
      F86-6 (IG1D) - Body ground Output SB - Body ground IG1 signal 20°C (68°F) 40.74 to 59.49 Ω IG1 Relay Monitor(Outside)
      F86-25 (P) - F88-11 (E) Input Y - BR P position signal Shift lever in P → Shift lever not in P 40 kΩ or higher → 200 Ω or less Shift P Signal
      F86-26 (SLP) - Body ground Input P - Body ground Steering lock position signal Steering wheel locked 10 kΩ or higher Steering Unlock Switch
      F86-27 (SPD) - F88-11 (E) Input W - BR Vehicle speed signal Always 30 kΩ or higher Vehicle Speed Signal
      F86-28 (SSW1) - Body ground Input V - Body ground SSW1 contact signal Power switch pushed → Power switch not pushed Below 1 Ω → 10 kΩ or higher Start Switch1
      F86-30 (SSW2) - Body ground Input G - Body ground

      SSW2 contact signal

      Tech Tips

      Backup for SSW1. Behaves the same way as SSW1.

      		 Power switch pushed → Power switch not pushed Below 1 Ω → 10 kΩ or higher Start Switch2

      • *: In order to prevent the vehicle auxiliary 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 auxiliary 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).

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

    3. Reconnect the F86 and F88 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
      F86-5 (IG) - F88-11 (E) Input P - BR IG power supply Power switch off → on (IG) Below 1 V → 11 to 14 V Engine Switch
      F88-9 (IG2D) - F88-11 (E) Output L - BR IG2 signal Power switch on (ACC) → Power switch on (IG) 1 V or less → 9 V or higher IG2 Relay Monitor(Outside)
      F86-4 (ACCD) - F88-11 (E) Output L - BR ACC signal Power switch off → Power switch on (ACC) 1 V or less → 8.5 V or higher ACC Relay Monitor
      F86-6 (IG1D) - F88-11 (E) Output SB - BR IG1 signal Power switch on (ACC) → Power switch on (IG) 1 V or less → 9 V or higher IG1 Relay Monitor(Outside)
      F86-25 (P) - F88-11 (E) Input Y - BR P position signal Shift lever in P → Shift lever not in P 9 V or higher → 1.5 V or less Shift P Signal
      F86-26 (SLP) - F88-11 (E) Input P - BR Steering lock position signal Steering wheel locked → Steering wheel unlocked*1 11 to 14 V → 1.2 V or less Steering Unlock Switch
      F86-27 (SPD) - F88-11 (E) Input W - BR Vehicle speed signal Vehicle being driven at approx. 5 km/h (3 mph)

      Pulse generation

      (See waveform 2)

      		 Vehicle Speed Signal
      F86-28 (SSW1) - F88-11 (E) Input V - BR SSW1 contact signal Power switch not pushed → Power switch pushed 9 V or higher → 1 V or less Start Switch1
      F86-7 (ST2) - F88-11 (E) Output B - BR STSW signal With the brake pedal depressed, the power switch is pressed and held → After approx. 3 sec. has elapsed, the power switch is released 9 V or higher → 1 V or less -
      F86-29 (SLR+) - F88-11 (E) Output L - BR Steering lock motor operation command signal (Steering lock motor operation permission signal sent from the certification ECU (smart key ECU assembly)) Steering lock motor stopped → Steering lock motor operating → Steering lock motor stopped*2 Pulse generation (See waveform 1) -
      F86-30 (SSW2) - F88-11 (E) Input G - BR

      SSW2 contact signal

      Tech Tips

      Backup for SSW1. Behaves the same way as SSW1.

      		 Power switch not pushed → Power switch pushed 9 V or higher → 1 V or less Start Switch2
      F86-3 (CLG5) - F88-11 (E) Output P - BR Output to No. 1 indoor electrical key antenna assembly (front floor)

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Door is open

      4. Door is closed

      5. Within 30 seconds

      Pulse generation

      (See waveform 3)

      		 Over Head + Front Room (key diagnostic mode)
      F86-2 (CG5B) - F88-11 (E) Output Y - BR Output to No. 1 indoor electrical key antenna assembly (front floor) (terminal on opposite side of component from CLG5 output terminal)

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Door is open

      4. Door is closed

      5. Within 30 seconds

      Pulse generation

      (See waveform 3)

      		 Over Head + Front Room (key diagnostic mode)
      F87-9 (CLG7) - F88-11 (E) Output W - BR Output to No. 2 indoor electrical key antenna assembly (inside luggage)

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Door is open

      4. Door is closed

      5. Within 30 seconds

      Pulse generation

      (See waveform 3)

      		 Over Head + Back Door (inside) (key diagnostic mode)
      F87-8 (CG7B) - F88-11 (E) Output BR - BR Output to No. 2 indoor electrical key antenna assembly (inside luggage) (terminal on opposite side of component from CLG7 output terminal)

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Door is open

      4. Door is closed

      5. Within 30 seconds

      Pulse generation

      (See waveform 3)

      		 Over Head + Back Door (inside) (key diagnostic mode)
      F87-5 (RCO) - F88-11 (E) Output SB - BR Output to door control receiver (Power supply for door control receiver. Certification ECU (smart key ECU assembly) outputs 5 V when receiver starts operating.)

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Electrical key transmitter sub-assembly brought outside detection area*3 but kept inside wireless function operational area*4

      4. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 4)

      		 -
      F87-17 (RDAM) - F88-11 (E) Input LG - BR Door control receiver verifies data received from electrical key transmitter subassembly. Door control receiver sends data to ECU and intermittently grounds 12 V signal from certification ECU (smart key ECU assembly).

        Procedure:

      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly brought outside detection area*3 but kept inside wireless function operational area*4

      4. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

      Pulse generation

      (See waveform 5)

      		 -
      F87-6 (CSEL) - F88-11 (E) Output P - BR Communication channel switching circuit.

        Proceed:

      1. Power switch off

      2. All doors closed

      		 Below 1 V → 4.5 to 6 V → Below 1 V Key diagnostic mode

      Tech Tips


      • *1: When the power switch is turned off with the shift lever in P and any of the doors are opened or closed, the steering wheel will be locked. When the power switch is turned on (ACC) or on (IG), the steering wheel will be unlocked.

      • *2: Perform the following procedure to operate the steering lock motor.


        • The shift lever is in P.

        • The power switch is off.

        • While carrying the electrical key transmitter sub-assembly, the power switch is turned on (IG) and the steering is unlocked.

      • *3: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.

      • *4: For details about the areas that are inside the wireless function operational area, refer to Operation Check Click here.

    5. A004ET4E02
      Text in Illustration
      *a Steering lock motor not operating
      *b Steering lock motor operating

      Using an oscilloscope, check waveform 1.

      Waveform 1 (Reference)
      Item Content
      Tester Connection F86-29 (SLR+) - F88-11 (E)
      Tool Setting 2 V/DIV., 200 ms./DIV.
      Vehicle Condition

      Steering lock motor stopped →

      Steering lock motor operating →

      Steering lock motor stopped

      Tech Tips

      When all of the following conditions are met, open any of the doors to operate the steering lock motor.


      • The shift lever is in P.

      • While carrying the electrical key transmitter sub-assembly, the power switch is turned on (IG) and the steering is unlocked.

      • The power switch is off.

    6. A004E3GE01

      Using an oscilloscope, check waveform 2.

      Waveform 2 (Reference)
      Item Content
      Tester Connection F86-27 (SPD) - F88-11 (E)
      Tool Setting 5 V/DIV., 20 ms./DIV.
      Vehicle Condition Power switch on (IG), vehicle being driven at approx. 5 km/h (3 mph)

      Tech Tips

      The wavelength becomes shorter as the vehicle speed increases.

    7. A004EHKE01
      Text in Illustration
      *a Door open
      *b After approximately 30 seconds from when the door is closed

      Using an oscilloscope, check waveform 3.

      Tech Tips

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

      Waveform 3(Reference)
      Item Content
      Tester Connection

      F86-3 (CLG5) - F88-11 (E)

      F86-2 (CG5B) - F88-11 (E)

      F87-9 (CLG7) - F88-11 (E)

      F87-8 (CG7B) - F88-11 (E)
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Vehicle Condition

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly not inside vehicle

      3. Door is open

      4. Door is closed

      5. Within 30 seconds
    8. A004FM5E04
      Text in Illustration
      *a Before lock or unlock button of electrical key transmitter sub-assembly pressed
      *b After lock or unlock button of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 4.

      Tech Tips

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

      Waveform 4(Reference)
      Item Content
      Tester Connection F87-5 (RCO) - F88-11 (E)
      Tool Setting 2 V/DIV., 500 ms./DIV.
      Vehicle Condition

        Procedure:

      1. Power switch off

      2. Electrical key transmitter sub-assembly brought outside vehicle

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.

      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check Click here.

    9. A004FA5E04
      Text in Illustration
      *a Before lock or unlock button of electrical key transmitter sub-assembly pressed
      *b After lock or unlock button of electrical key transmitter sub-assembly pressed

      Using an oscilloscope, check waveform 5.

      Tech Tips

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

      Waveform 5(Reference)
      Item Content
      Tester Connection F87-17 (RDAM) - F88-11 (E)
      Tool Setting 5 V/DIV., 500 ms./DIV.
      Vehicle Condition

        Procedure:

      1. Power switch off

      2. All doors locked

      3. Electrical key transmitter sub-assembly brought outside detection area*1 but kept inside wireless function operational area*2

      4. Lock or unlock button of electrical key transmitter sub-assembly not pressed → pressed

      • *1: For details about the areas that are outside the entry function detection area, refer to Operation Check Click here.

      • *2: For details about the areas that are inside the wireless function operational area, refer to Operation Check Click here.

  2. HYBRID VEHICLE CONTROL ECU

    A004E40E02

    1. 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
      F56-23 (IMO) - F55-6 (E1) Output LG - BR

      ID code box communication output

      (Signal output from hybrid vehicle control ECU to ID code box)

      		 Power switch off 11 to 14 V -
      Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 1)
      F56-22 (IMI) - F55-6 (E1) Input R - BR

      ID code box communication input

      (Signal input from ID code box to hybrid vehicle control ECU)

      		 Power switch off 11 to 14 V
      Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      Pulse generation

      (See waveform 2)

      1. Waveform 1

        A004EFDE01
        Text in Illustration
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F56-23 (IMO) - F55-6 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Vehicle Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected

      2. Waveform 2

        A004GCRE01
        Text in Illustration
        *a Approximately 160 ms *b Approximately 270 ms
        Measurement Condition
        Item Content
        Tester Connection F56-22 (IMI) - F55-6 (E1)
        Tool Setting 2 V/DIV., 500 ms./DIV.
        Vehicle Condition Within 3 seconds of hybrid control system start or within 3 seconds of power switch turned on (IG) after auxiliary battery cable disconnected and reconnected