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


  1. CHECK POWER MANAGEMENT CONTROL ECU

    A003ZY2E83

    1. Disconnect the A21, L5 and L6 connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A21-2 (IG2D) - Body ground V - Body ground IG2 relay operation signal Always 131 to 230 Ω
      A21-23 (STP) - Body ground L - Body ground Stop light switch signal Brake pedal depressed 11 to 14 V
      A21-23 (STP) - Body ground L - Body ground Stop light switch signal Brake pedal released Below 1 V
      L5-1 (AM22) - Body ground W - Body ground +B power supply Always 9.5 to 16 V
      L6-7 (AM21) - Body ground W - Body ground +B power supply Always 9.5 to 16 V
      L5-6 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      L6-4 (E12) - Body ground BR - Body ground Ground Always Below 1 Ω
      L6-24 (CA1L) - Body ground W - Body ground CAN communication line Always 10 kΩ or higher
      L6-25 (CA1H) - Body ground B - Body ground CAN communication line Always 10 kΩ or higher
      L6-17 (SSW2) - Body ground Y - Body ground Power switch signal Power switch pushed Below 1 Ω
      L6-17 (SSW2) - Body ground Y - Body ground Power switch signal Power switch not pushed 10 kΩ or higher
      L5-7 (SSW1) - Body ground B - Body ground Power switch signal Power switch pushed Below 1 Ω
      L5-7 (SSW1) - Body ground B - Body ground Power switch signal Power switch not pushed 10 kΩ or higher
      L6-1 (ACCD) - Body ground G - Body ground ACC relay operation signal Always 50.625 to 61.875 Ω
      L6-2 (IG1D) - Body ground B - Body ground IG1 relay operation signal Always 50.625 to 61.875 Ω
      L6-11 (LIN2) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher

      If the result is not as specified, there may be a malfunction in the wire harness.

    3. Reconnect the A21, L5 and L6 connectors.

    4. Measure the voltage and check for pulses according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A21-2 (IG2D) - L5-6 (E1) V - BR IG2 signal Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more
      A21-2 (IG2D) - L5-6 (E1) V - BR IG2 signal Power switch on (ACC) Below 1 V
      L5-9 (INDW) - L5-6 (E1) G - BR Warning signal Brake pedal depressed, park (P) selected, power switch on (ACC, IG) 8 to 14 V
      A21-22 (PCON) - L5-6 (E1) LG - BR P position signal Park (P) selected

      Pulse generation

      (See waveform 1)
      A21-28 (PPOS) - L5-6 (E1) W - BR P position signal Park (P) selected

      Pulse generation

      (See waveform 1)
      L6-17 (SSW2) - L5-6 (E1) Y - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more
      L6-17 (SSW2) - L5-6 (E1) Y - BR Power switch signal Power switch pushed Below 1 V
      L5-7 (SSW1) - L5-6 (E1) B - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more
      L5-7 (SSW1) - L5-6 (E1) B - BR Power switch signal Power switch pushed Below 1 V
      L6-1 (ACCD) - L5-6 (E1) G - BR ACC signal Power switch on (ACC) Output voltage at terminal AM21 or AM22 is -2 V or more
      L6-1 (ACCD) - L5-6 (E1) G - BR ACC signal Power switch off Below 1 V
      L6-2 (IG1D) - L5-6 (E1) B - BR IG1 signal Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more
      L6-2 (IG1D) - L5-6 (E1) B - BR IG1 signal Power switch on (ACC) Below 1 V
      L5-8 (INDS) - L5-6 (E1) R - BR Vehicle condition signal Brake pedal depressed, park (P) selected 8 to 14 V
      L5-14 (SPDI) - L5-6 (E1) V - BR Vehicle speed signal Power switch on (IG), wheel rotated slowly

      Pulse generation

      (See waveform 2)
      L6-20 (IMO) - L5-6 (E1) L - BR Immobiliser communication status Immobiliser communicating

      Pulse generation

      (See waveform 3)
      L6-21 (IMI) - L5-6 (E1) R - BR Immobiliser communication status Immobiliser communicating

      Pulse generation

      (See waveform 4)

      If the result is not as specified, the ECU may have a malfunction.

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


      1. A00436XE01

        Waveform 1

        Tester Connection

        CH1: A21-22 (PCON) - L5-6 (E1)

        CH2: A21-28 (PPOS) - L5-6 (E1)
        Tool Setting 10 V/DIV., 10 ms./DIV.
        Vehicle Condition Power switch on (IG)
      2. A0042AHE01

        Waveform 2

        Tester Connection L5-14 (SPDI) - L5-6 (E1)
        Tool Setting 5 V/DIV., 10 ms./DIV.
        Vehicle Condition Driving at approx. 20 km/h (12 mph)

        Tech Tips

        The wavelength becomes shorter as the vehicle speed increases.

      3. A00424LE02

        Waveform 3

        Tester Connection L6-20 (IMO) - L5-6 (E1)
        Tool Setting 5 V/DIV., 500 ms./DIV.
        Vehicle Condition Within 3 seconds after power switch on (READY), or within 3 seconds after power switch first turned on (IG) after auxiliary battery disconnected and connected
      4. A0043IIE01

        Waveform 4

        Tester Connection L6-21 (IMI) - L5-6 (E1)
        Tool Setting 5 V/DIV., 50 ms./DIV.
        Vehicle Condition Power switch on (IG)

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A0041ZCE84

    1. Disconnect the L56 connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L56-1 (+B) - Body ground B - Body ground +B power supply Always 11 to 14 V
      L56-9 (CANH) - Body ground BE - Body ground CAN communication line Always 10 kΩ or higher
      L56-10 (CANL) - Body ground P - Body ground CAN communication line Always 10 kΩ or higher
      L56-15 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L56-16 (IG) - Body ground BE - Body ground IG power supply Power switch on (IG) 11 to 14 V
      L56-29 (LIN) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher

      If the result is not as specified, there may be a malfunction in the wire harness.

  3. CHECK TRANSMISSION CONTROL ECU ASSEMBLY

    A004197E04

    1. Disconnect the A22 and A23 connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A23-1 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      A23-5 (E02) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A23-6 (E01) - Body ground W-B - Body ground Ground Always Below 1 Ω
      A22-16 (+B) - Body ground L - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      A22-16 (+B) - Body ground L - Body ground Ignition power supply Power switch off Below 1 V
      A22-15 (BATT) - Body ground SB - Body ground +B power supply Except power switch on (READY) 11 to 14 V
      A22-15 (BATT) - Body ground SB - Body ground +B power supply Power switch on (READY) 11 to 15.5 V
      A23-15 (CA1L) - Body ground P - Body ground CAN communication line Always 10 kΩ or higher
      A23-16 (CA1H) - Body ground BE - Body ground CAN communication line Always 10 kΩ or higher
      A23-24 (LIN) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher

      • If the result is not as specified, there may be a malfunction in the wire harness.

  4. CHECK ID CODE BOX (IMMOBILISER CODE ECU) [w/o Wireless Buzzer Answer-back Function]

    A004353E21

    1. Disconnect the L10 connector.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      L10-1 (+B) - L10-8 (GND) B - W-B +B power supply Always 11 to 14 V
      L10-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      L10-3 (LIN1) - Body ground L - Body ground LIN communication line Always 10 kΩ or higher

      If the result is not as specified, there may be a malfunction in the wire harness.