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


  1. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01KSBSN03

    1. Disconnect the E33 and E35 certification ECU (smart key ECU assembly) 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
      E33-9 (IG2D) - Body ground Output GR - Body ground IG2 signal 20°C (68°F) Approximately 310.14 Ω IG2 Relay Monitor(Outside)
      E33-18 (STP1) - Body ground Input L - Body ground Stop light switch signal Brake pedal depressed → Brake pedal released 9 V or higher → 1 V or less Stop Light Switch1
      E33-2 (+B) - Body ground Input W - Body ground Power source Power switch off 11 to 14 V -
      E33-11 (E) - Body ground - W-B - Body ground Ground Always Below 1 Ω -
      E35-30 (SSW2) - Body ground Input B - 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
      E35-28 (SSW1) - Body ground Input SB - Body ground SSW1 contact signal Power switch pushed → Power switch not pushed Below 1 Ω → 10 kΩ or higher Start Switch1
      E35-6 (IG1D) - Body ground Output W - Body ground IG1 signal 20°C (68°F) 54.32 to 79.32 Ω IG1 Relay Monitor(Outside)
      E35-4 (ACCD) - Body ground Output V - Body ground ACC signal 20°C (68°F) 163 to 238 Ω ACC Relay Monitor
      E35-27 (SPD) - E33-11 (E) Input V - W-B Vehicle speed signal Always 30 kΩ or higher Vehicle Speed Signal
      E35-25 (PPOS) - Body ground Input SB - Body ground P position signal Always 30 kΩ or higher -

    3. Reconnect the E33 and E35 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
      E33-9 (IG2D) - E33-11 (E) Output GR - W-B IG2 signal Power switch on (ACC) → Power switch on (IG) 1 V or less → 9 V or higher -
      E35-30 (SSW2) - E33-11 (E) Input B - W-B

      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
      E35-28 (SSW1) - E33-11 (E) Input SB - W-B SSW1 contact signal Power switch not pushed → Power switch pushed 9 V or higher → 1 V or less Start Switch1
      E35-4 (ACCD) - E33-11 (E) Output V - W-B ACC signal Power switch off → Power switch on (ACC) 1 V or less → 8.5 V or higher ACC Relay Monitor
      E35-6 (IG1D) - E33-11 (E) Output W - W-B IG1 signal Power switch on (ACC) → Power switch on (IG) 1 V or less → 9 V or higher IG1 Relay Monitor(Outside)
      E33-7 (ST2) - Body ground Output V - Body ground Starting control signal

      • P position 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 -
      E35-27 (SPD) - E33-11 (E) Input V - W-B Vehicle speed signal Vehicle being driven at approx. 5 km/h (3 mph)

      Pulse generation

      (See waveform 2)

      		 Vehicle Speed Signal
      E35-25 (PPOS) - E33-11 (E) Input SB - W-B P position signal

      • P position signal

      • Power switch on (ACC) → Power switch on (IG)

      Pulse generation

      (See waveform 1)

      		 -

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


      1. A01KU0UN01

        Waveform 1

        Item Content
        Tester Connection E35-25 (PPOS) - E33-11 (E)
        Tool Setting 10 V/DIV., 10 ms/DIV.
        Condition Power switch on (IG), P position
      2. A01KTG1N11

        Waveform 2

        Item Content
        Tester Connection E35-27 (SPD) - E33-11 (E)
        Tool Setting 5 V/DIV., 100 ms./DIV.
        Condition Power switch on (READY), vehicle being driven at approx. 5 km/h (3 mph)

        Tech Tips

        The wavelength becomes shorter as the vehicle speed increases.

  2. CHECK HYBRID VEHICLE CONTROL ECU ASSEMBLY

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