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


  1. CHECK POWER MANAGEMENT CONTROL ECU

    A01NCOUE12

    1. Disconnect the A81, F97 and F98 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
      A81-2 (IG2D) - Body ground B - Body ground IG2 relay operation signal Always 131 to 230 Ω
      A81-23 (STP) - Body ground R - Body ground Stop light switch signal Brake pedal depressed 11 to 14 V
      A81-23 (STP) - Body ground R - Body ground Stop light switch signal Brake pedal released Below 1 V
      F97-1 (AM22) - Body ground SB - Body ground +B power supply Always 11 to 14 V
      F98-7 (AM21) - Body ground R - Body ground +B power supply Always 11 to 14 V
      F98-16 (SLP) - Body ground G - Body ground Steering lock actuator assembly position signal Always 10 kΩ or higher
      F97-6 (E1) - Body ground BR - Body ground Ground Always Below 1 Ω
      F98-4 (E12) - Body ground W-B - Body ground Ground Power switch not pushed 10 kΩ or higher
      F98-6 (SLR+) - Body ground L - Body ground Steering lock motor signal Always 10 kΩ or higher
      F98-30 (CA3N) - Body ground W - Body ground CAN communication line Always 10 kΩ or higher
      F98-31 (CA3P) - Body ground V - Body ground CAN communication line Always 10 kΩ or higher
      F98-24 (CA1L) - Body ground R - Body ground CAN communication line Always 10 kΩ or higher
      F98-25 (CA1H) - Body ground LG - Body ground CAN communication line Always 10 kΩ or higher
      F98-17 (SSW2) - Body ground B - Body ground Power switch signal Power switch pushed Below 1 Ω
      F98-17 (SSW2) - Body ground B - Body ground Power switch signal Power switch not pushed 10 kΩ or higher
      F97-1 (SSW1) - Body ground LG - Body ground Power switch signal Power switch pushed Below 1 Ω
      F98-2 (IG1D) - Body ground G - Body ground IG1 relay operation signal Always 50.625 to 61.875 Ω
      F98-11 (LIN2) - Body ground V - 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 A81, F97 and F98 connectors.

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

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      A81-2 (IG2D) - F97-6 (E1) B - BR IG2 signal Power switch on (IG) Output voltage at terminal AM21 or AM22 is -2 V or more
      A81-2 (IG2D) - F97-6 (E1) B - BR IG2 signal Power switch on (ACC) Below 1 V
      F98-16 (SLP) - F97-6 (E1) G - BR Steering lock actuator assembly signal Steering lock released

      Pulse generation

      (See waveform 1)
      F98-16 (SLP) - F97-6 (E1) G - BR Steering lock actuator assembly signal

      Shift lever in P

      Steering lock locked

      Pulse generation

      (See waveform 1)
      F98-6 (SLR+) - F97-6 (E1) L - BR Steering motor signal Steering lock motor operating Below 1 V
      F98-6 (SLR+) - F97-6 (E1) L - BR Steering motor signal Steering lock motor not operating 11 to 14 V
      F97-9 (INDW) - F97-6 (E1) Y - BR Warning signal Brake pedal depressed, shift lever in P, power switch on (ACC, IG) 8 to 14 V
      F97-15 (P2) - F97-6 (E1) R - BR Shift lock signal Shift lever in P 8 to 14 V
      F97-15 (P2) - F97-6 (E1) R - BR Shift lock signal Shift lever not in P Below 1 V
      F98-17 (SSW2) - F97-6 (E1) B - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more
      F98-17 (SSW2) - F97-6 (E1) B - BR Power switch signal Power switch pushed Below 1 V
      F97-1 (SSW1) - F97-6 (E1) LG - BR Power switch signal Power switch not pushed Output voltage at terminal AM21 or AM22 is -2 V or more
      F97-1 (SSW1) - F97-6 (E1) LG - BR Power switch signal Power switch pushed Below 1 V
      F98-1 (ACCD) - F97-6 (E1) GR - BR ACC signal Power switch on (ACC) 8 to 14 V
      F98-1 (ACCD) - F97-6 (E1) GR - BR ACC signal Power switch off Below 1 V
      F98-2 (IG1D) - F97-6 (E1) G - BR IG1 signal Power switch on (IG) 8 to 14 V
      F98-2 (IG1D) - F97-6 (E1) G - BR IG1 signal Power switch on (ACC) Below 1 V
      F97-8 (INDS) - F97-6 (E1) V - BR Vehicle condition signal Brake pedal depressed, shift lever in P 8 to 14 V
      F97-14 (SPDI) - F97-6 (E1) L - BR Vehicle speed signal Power switch on (IG), wheel rotated slowly

      Pulse generation

      (See waveform 2)
      F98-20 (IMO) - F97-6 (E1) LG - BR Immobiliser communication status Immobiliser communicating

      Pulse generation

      (See waveform 3)
      F98-21 (IMI) - F97-6 (E1) P - BR Immobiliser communication status Immobiliser communicating

      Pulse generation

      (See waveform 3)

      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. A01NF7YE01

        Waveform 1

        Tester Connection F98-16 (SLP) - F97-6 (E1)
        Tool Setting 2 V/DIV., 100 ms./DIV.
        Vehicle Condition Steering lock/unlock
      2. A01NCNZE01

        Waveform 2

        Tester Connection F97-14 (SPDI) - F97-6 (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. A01NF8FE02

        Waveform 3

        Tester Connection

        CH1: F98-20 (IMO) - F97-6 (E1)

        CH2: F98-21 (IMI) - F97-6 (E1)
        Tool Setting 5 V/DIV., 200 ms./DIV.
        Vehicle Condition Power switch off → Power switch on (IG) → Power switch on (READY)

  2. CHECK CERTIFICATION ECU (SMART KEY ECU ASSEMBLY)

    A01NFU2E09

    1. Disconnect the F58 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
      F58-1 (+B) - Body ground LG - Body ground +B power supply Always 11 to 14 V
      F58-11 (SWIL) - Body ground G - Body ground Illumination signal Light control switch tail or head 8 to 14 V
      F58-15 (E)- Body ground W-B - Body ground Ground Always Below 1 Ω
      F58-16 (IG) - Body ground B - Body ground IG power supply Power switch on (IG) 11 to 14 V
      F58-29 (LIN) - Body ground V - 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 F58 connector.

    4. Measure the voltage according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F58-11 (SWIL) - Body ground G - Body ground Illumination signal Light control switch tail or head 8 to 14 V

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

  3. CHECK STEERING LOCK ACTUATOR ASSEMBLY (STEERING LOCK ECU)

    A01NF3ME32

    1. Disconnect the F37 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
      F37-1 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω
      F37-6 (IG2) - Body ground B - Body ground Ignition power supply Power switch on (IG) 11 to 14 V
      F37-6 (IG2) - Body ground B - Body ground Ignition power supply Power switch off Below 1 V
      F37-7 (B) - Body ground L - Body ground +B power supply Always 11 to 14 V

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

    3. Reconnect the F37 connector.

    4. Measure the voltage according to the value(s) in the table below.

      Tester Connection Wiring Color Terminal Description Condition Specified Condition
      F37-4 (SLP1) - F37-1 (GND) G - W-B Steering lock assembly position signal Steering locked 11 to 14 V
      F37-4 (SLP1) - F37-1 (GND) G - W-B Steering lock actuator position signal Steering released Below 1 V

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

  4. CHECK ID CODE BOX (IMMOBILISER CODE ECU)

    A01NENHE16

    1. Disconnect the F45 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
      F45-1 (+B) - F45-8 (GND) B - W-B +B power supply Always 11 to 14 V
      F45-8 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω

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