METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A01BBTEE01
    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    3 (H20-1) (*1) - Body ground B - Body ground A/T shift condition signal (3) Ignition switch ON, A/T 3 indicator light OFF → ON Below 1 V → 10 to 14 V
    2 (H20-2) (*1) - Body ground Y - Body ground A/T shift condition signal (2) Ignition switch ON, A/T 2 indicator light OFF → ON Below 1 V → 10 to 14 V
    L (H20-3) (*1) - Body ground R - Body ground A/T shift condition signal (L) Ignition switch ON, A/T L indicator light OFF → ON Below 1V → 10 to 14 V
    SW2 (H20-4) - Body ground Y-R - Body ground Except driver side door condition signal Ignition switch ON, except driver side door CLOSE → OPEN 10 to 14 V → Below 1 V
    B (H20-5) - Body ground R - Body ground Battery Always 10 to 14 V
    IG+ (H20-6) - Body ground B-R - Body ground Ignition switch signal Ignition switch OFF → ON Below 1V → 10 to 14 V
    E1 (H20-7) - Body ground W-B - Body ground Ground Always Below 1 V
    E2 (H20-8) - Body ground W-B - Body ground Ground (Fuel ground) Always Below 1 V
    +S (H20-9) - Body ground P-L - Body ground Speed signal (Output) Ignition switch ON, turn the wheel slowly

    Pulse generation

    (See waveform 1)
    ILL+ (H20-10) - Body ground G - Body ground Illumination signal Ignition switch ON, light control switch OFF → TAIL/HEAD Below 1 V → 10 to 14 V
    KSW (H20-11) - Body ground Y - Body ground Key switch signal Ignition switch OFF → ON Below 1 V → 10 to 14 V
    SW (H20-12) - Body ground R-G - Body ground Driver side door condition signal Ignition switch ON, driver side door CLOSE → OPEN 10 to 14 V → Below 1 V
    L (H20-13) - Body ground Y-R - Body ground Fuel signal Ignition switch ON, fuel level is FULL → EMPTY Below 1 V → 4 to 7 V
    S (H20-14) - Body ground B-Y - Body ground Tacho signal Ignition switch ON, engine running

    Pulse generation

    (See waveform 2)
    SI (H20-15) - Body ground P - Body ground Speed signal (Input) Ignition switch ON, engine running

    Pulse generation

    (See waveform 1)
    S (*2) (H20-16) - Body ground R-B - Body ground Fuel filter signal Ignition switch ON, FILTER/SEDIMENT indicator light OFF → ON 10 to 14 V → Below 1 V
    S (H20-17) - Body ground Y - Body ground Water temperature signal Ignition switch ON, coolant temperature 50°C to 120°C (122°F to 248.0°F)

    Pulse generation

    (See waveform 3)
    S (*2) (H20-18) - Body ground LG - Body ground Fuel sedimenter signal Ignition switch ON, FILTER/SEDIMENT indicator light OFF → ON 10 to 14 V → Below 1 V
    L (H20-19) - Body ground LG - Body ground Driver side seat belt signal Ignition switch ON, driver side seat belt warning light Blinks → OFF 10 to 14 V → Below 1 V
    OIL (H20-20) - Body ground Y-G - Body ground Oil level signal Ignition switch ON, OIL LEVEL indicator light ON → OFF 10 to 14 V → Below 1 V
    D (H20-21) (*1) - Body ground G-Y - Body ground A/T shift condition signal (D) Ignition switch ON, A/T D indicator light OFF → ON Below 1V → 10 to 14V
    N (H20-22) (*1) - Body ground GR - Body ground A/T shift condition signal (N) Ignition switch ON, A/T N indicator light OFF → ON Below 1V → 10 to 14V
    R (H20-23) (*1) - Body ground L - Body ground A/T shift condition signal (R) Ignition switch ON, A/T R indicator light OFF → ON Below 1V → 10 to 14V
    P (H20-24) (*1) - Body ground R-W - Body ground A/T shift condition signal (P) Ignition switch ON, A/T P indicator light OFF → ON Below 1V → 10 to 14V
    L (H20-25) (*2) - Body ground B-W - Body ground Glow signal Ignition switch ON, GLOW indicator light OFF → ON Below 1V → 10 to 14V
    B (H20-26) - Body ground L-R - Body ground Turn signal flasher R signal Ignition switch ON, turn signal flasher RH OFF → ON Below 1V → 10 to 14V
    S (H20-27) - Body ground W - Body ground Oil pressure signal Ignition switch ON, OIL indicator light OFF → ON 10 to 14 V → Below 1 V
    E3 (H20-29) - Body ground BR - Body ground Ground (Speed sensor ground) Always Below 1V
    FOG (H20-30) - Body ground Y - Body ground Front fog light signal Ignition switch ON, front fog light OFF → ON Below 1V → 10 to 14V
    B (H20-31) - Body ground L - Body ground Turn signal flasher L signal Ignition switch ON, turn signal flasher LH OFF → ON Below 1V → 10 to 14V
    EGW (H20-32) - Body ground G-R - Body ground Check engine signal Ignition switch ON, CHECK E/G warning light OFF → ON Below 1V → 10 to 14V
    CHG- (H20-33) - Body ground B - Body ground Charge signal Ignition switch ON, CHARGE warning light OFF → ON 10 to 14 V → Below 1 V
    ST (H20-34) (*3) - Body ground R - Body ground Illumination signal Always 10 to 14 V
    LP (H20-35) (*5) - Body ground R - Body ground Immobiliser signal Ignition switch OFF, SECURITY indicator light OFF → ON Below 1V → 10 to 14V
    BRK2 (H20-36) - Body ground B - Body ground Brake fluid level warning signal Ignition switch ON, BRAKE warning light OFF → ON Below 1V → 10 to 14V
    BRK1 (H20-37) - Body ground B - Body ground Brake signal Ignition switch ON, BRAKE warning light OFF → ON Below 1V → 10 to 14V
    BEAM+ (H20-38) - Body ground R-B - Body ground R-B - Body ground Ignition switch ON, BEAM indicator light OFF → ON Below 1V → 10 to 14V
    S (H20-39) (*2) - Body ground B-R - Body ground ABS signal Ignition switch ON, ABS warning light OFF → ON Below 1V → 10 to 14V
    AIRBAG (H20-40) (*4) - Body ground B-Y - Body ground Airbag signal Ignition switch ON, AIRBAG indicator light OFF → ON Below 1V → 10 to 14V

    *1: A/T

    *2: Diesel

    *3: w/ Optitron Meter Only

    *4: w/ Airbag

    *5: w/ Immobiliser


    1. A01BB3CE01

      Waveform 1 (Reference): Using an oscilloscope:

      Item Condition
      Tool setting 5 V/DIV., 20 ms/DIV.
      Vehicle condition Driving at approx. 20 km/h (12.4 mph)
    2. A01BEG3E02

      Waveform 2 (Reference): Using an oscilloscope:

      Item Condition
      Tool setting 5 V/DIV., 10 ms/DIV.
      Vehicle condition Engine idle speed
    3. A01BATNE01

      Waveform 3 (Reference): Using an oscilloscope:

      Item Condition
      Tool setting 5 V/DIV., 100 ms/DIV.
      Vehicle condition Ignition switch ON, engine idle speed

    Tech Tips

    As engine coolant temperature rises, the period A shown in the illustration becomes longer.

    Except Middle East
    Engine Coolant Temperature A
    Less than 50°C (122.0°F) 96.304 to 100.304 ms
    83°C (181.4°F) 231.472 to 235.472 ms
    120°C (248.0°F) 383.024 to 387.024 ms
    Middle East
    Engine Coolant Temperature A
    Less than 70°C (158.0°F) 178.224 to 182.224 ms
    95°C (203.0°F) 282.624 to 286.624 ms
    120°C (248.0°F) 383.024 to 387.024 ms

  2. ECM

    A01BHQVE01
    Symbols (Terminal No.) Wiring Color Terminal Description Condition Specified Condition
    TACH (B7-1) (*1) - Body ground B-Y - Body ground Tachometer signal Ignition switch ON, engine idle speed

    Pulse generation

    (See waveform 1)
    THWO (B7-14) (*1) - Body ground Y - Body ground Water temperature signal Ignition switch ON, engine coolant temperature 50°C to 120°C (122°F to 248°F)

    Pulse generation

    (See waveform 2)
    TACH (B9-4) (*2) - Body ground B-Y - Body ground Tachometer signal Ignition switch ON, engine idle speed

    Pulse generation

    (See waveform 1)
    THWO (B9-2) (*2) - Body ground Y - Body ground Water temperature signal Ignition switch ON, engine coolant temperature 50°C to 120°C (122°F to 248°F)

    Pulse generation

    (See waveform 2)
    TAC (B8-7) (*3) - Body ground B-Y - Body ground Tachometer signal Ignition switch ON, engine idle speed

    Pulse generation

    (See waveform 1)
    THWO (B10-8) (*3) - Body ground Y - Body ground Water temperature signal Ignition switch ON, engine coolant temperature 50°C to 120°C (122°F to 248°F)

    Pulse generation

    (See waveform 2)

    *1: 2TR-FE

    *2: 1KD-FTV, 2KD-FTV

    *3: 5L-E


    1. A01BEG3E02

      Waveform 1 (Reference): Using an oscilloscope:

      Item Condition
      Tool setting 5 V/DIV., 10 ms /DIV.
      Vehicle condition Engine idle speed
    2. A01BATNE01

      Waveform 2 (Reference): Using an oscilloscope:

      Item Condition
      Tool setting 5 V/DIV., 100 ms /DIV.
      Vehicle condition Ignition switch ON, engine idle speed

    Tech Tips

    As engine coolant temperature rises, the period A shown in the illustration becomes longer.

    Except Middle East
    Engine Coolant Temperature A
    Less than 70°C (158.0°F) 178.224 to 182.224 ms
    95°C (203.0°F) 282.624 to 286.624 ms
    120°C (248.0°F) 383.024 to 387.024 ms
    Middle East
    Engine Coolant Temperature A
    Less than 50°C (122.0°F) 96.304 to 100.304 ms
    83°C (181.4°F) 231.472 to 235.472 ms
    120°C (248.0°F) 383.024 to 387.024 ms

  3. COMBINATION METER INNER CIRCUIT

    A01BERRE01