ENTRY AND START SYSTEM(for Start Function) TERMINALS OF ECU


  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01V0S3E02

    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
      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
      F86-29 (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

      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.

    5. Using an oscilloscope, check the waveform of the ECU.


      1. A01V0VGE02
        Text in Illustration
        *a Steering lock motor not operating
        *b Steering lock motor operating

        Waveform 1

        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.

      2. A01UZEFE01

        Waveform 2

        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.

  2. HYBRID VEHICLE CONTROL ECU

    A01UXXQE02

    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

        A01UZH2E01
        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

        A01V087E01
        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