METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A01BBTEE01
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    H20-1 (3)*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 → 11 to 14 V
    H20-2 (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 → 11 to 14 V
    H20-3 (L)*1 - Body ground R - Body ground A/T shift condition signal (L) Ignition switch ON, A/T L indicator light OFF → ON Below 1V → 11 to 14 V
    H20-4 (SW2) - Body ground Y-R - Body ground Except driver side door condition signal Ignition switch ON, except driver side door CLOSE → OPEN 11 to 14 V → Below 1 V
    H20-5 (B) - Body ground R - Body ground Battery Always 11 to 14 V
    H20-6 (IG+) - Body ground B-R - Body ground Ignition switch signal Ignition switch OFF → ON Below 1V → 11 to 14 V
    H20-7 (E1) - Body ground W-B - Body ground Ground Always Below 1 V
    H20-8 (E2) - Body ground W-B - Body ground Ground (Fuel ground) Always Below 1 V
    H20-9 (+S) - Body ground P-L - Body ground Speed signal (Output) Ignition switch ON, turn the wheel slowly

    Pulse generation

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

    Pulse generation

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

    Pulse generation

    (See waveform 1)
    H20-16 (L)*2 - Body ground R-B - Body ground Fuel filter signal Ignition switch ON, FILTER/SEDIMENT indicator light OFF → ON 11 to 14 V → Below 1 V
    H20-17 (S) - 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)
    H20-18 (S)*2 - Body ground LG - Body ground Fuel sedimenter signal Ignition switch ON, FILTER/SEDIMENT indicator light OFF → ON 11 to 14 V → Below 1 V
    H20-19 (L) - Body ground LG - Body ground Driver side seat belt signal Ignition switch ON, driver side seat belt warning light Blinks → OFF 11 to 14 V → Below 1 V
    H20-20 (OIL) - Body ground Y-G - Body ground Oil level signal Ignition switch ON, OIL LEVEL indicator light ON → OFF 11 to 14 V → Below 1 V
    H20-21 (D)*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 → 11 to 14V
    H20-22 (N)*1 - Body ground GR - Body ground A/T shift condition signal (N) Ignition switch ON, A/T N indicator light OFF → ON Below 1V → 11 to 14V
    H20-23 (R)*1 - Body ground L - Body ground A/T shift condition signal (R) Ignition switch ON, A/T R indicator light OFF → ON Below 1V → 11 to 14V
    H20-24 (P)*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 → 11 to 14V
    H20-25 (L)*2 - Body ground B-W - Body ground Glow signal Ignition switch ON, GLOW indicator light OFF → ON Below 1V → 11 to 14V
    H20-26 (B) - Body ground L-R - Body ground Turn signal flasher R signal Ignition switch ON, turn signal flasher RH OFF → ON Below 1V → 11 to 14V
    H20-27 (S) - Body ground W - Body ground Oil pressure signal Ignition switch ON, OIL indicator light OFF → ON 11 to 14 V → Below 1 V
    H20-28 (PBLT)*5 - Body ground B-R - Body ground

    Seat belt warning signal

    (Passenger side)

    		 Ignition switch ON, Front passenger side seat belt warning light OFF → ON →OFF 11 to 14V → Below 1V → 11 to 14V
    H20-29 (E3)*5 - Body ground BR - Body ground Ground (Speed sensor ground) Always Below 1V
    H20-30 (FOG) - Body ground Y - Body ground Front fog light signal Ignition switch ON, front fog light OFF → ON Below 1V → 11 to 14V
    H20-31 (B) - Body ground L - Body ground Turn signal flasher L signal Ignition switch ON, turn signal flasher LH OFF → ON Below 1V → 11 to 14V
    H20-32 (EGW) - Body ground G-R - Body ground Check engine signal Ignition switch ON, CHECK E/G warning light OFF → ON Below 1V → 11 to 14V
    H20-33 (CHG-) - Body ground B - Body ground Charge signal Ignition switch ON, CHARGE warning light OFF → ON 11 to 14 V → Below 1 V
    H20-34 (P/SB) *5 - Body ground W - Body ground

    Seat belt warning signal

    (Passenger side)

    		 Ignition switch ON, Front passenger side seat belt warning light OFF → ON →OFF 11 to 14V → Below 1V → 11 to 14V
    H20-35 (LP)*4 - Body ground R - Body ground Immobiliser signal Ignition switch OFF, SECURITY indicator light OFF → ON Below 1V → 11 to 14V
    H20-36 (SW)*5 - Body ground B - Body ground Brake fluid level warning signal Ignition switch ON, BRAKE warning light OFF → ON Below 1V → 11 to 14V
    H20-37 (PKBI) - Body ground B - Body ground Brake signal Ignition switch ON, BRAKE warning light OFF → ON Below 1V → 11 to 14V
    H20-38 (+) - Body ground R-B - Body ground R-B - Body ground Ignition switch ON, BEAM indicator light OFF → ON Below 1V → 11 to 14V
    H20-39 (LP)*2 - Body ground B-R - Body ground ABS signal Ignition switch ON, ABS warning light OFF → ON Below 1V → 11 to 14V
    H20-40 (SW)*3 - Body ground B-Y - Body ground Airbag signal Ignition switch ON, AIRBAG indicator light OFF → ON Below 1V → 11 to 14V

    *1: for Automatic Transaxle

    *2: for Diesel

    *3: Vehicles with Airbag

    *4: Vehicles with Immobiliser

    *5: Vehicles with Seat Belt Warning Buzzer


    1. A01BB3CE01

      Waveform 1: Using an oscilloscope:

      Terminal Connections

      H20-9 (+S) - Body ground

      H20-15 (SI) - Body ground
      Tester Range 5 V/DIV., 20 ms/DIV.
      Vehicle Condition Driving at approx. 20 km/h (12.4 mph)
    2. A01BEG3E02

      Waveform 2: Using an oscilloscope:

      Terminal Connections H20-14 (S) - Body ground
      Tester Range 5 V/DIV., 10 ms/DIV.
      Vehicle Condition Engine idle speed
    3. A01BATNE01

      Waveform 3: Using an oscilloscope:

      Terminal Connections H20-17 (S) - Body ground
      Tester Range 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
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    B7-1 (TACH)*1 - Body ground B-Y - Body ground Tachometer signal Ignition switch ON, engine idle speed

    Pulse generation

    (See waveform 1)
    B7-14 (THWO)*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)
    B9-4 (TACH)*2 - Body ground B-Y - Body ground Tachometer signal Ignition switch ON, engine idle speed

    Pulse generation

    (See waveform 1)
    B9-2 (THWO)*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)
    B8-7 (TAC)*3 - Body ground B-Y - Body ground Tachometer signal Ignition switch ON, engine idle speed

    Pulse generation

    (See waveform 1)
    B10-8 (THWO)*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: for 2TR-FE

    *2: for 1KD-FTV or 2KD-FTV

    *3: for 5L-E


    1. A01BEG3E02

      Waveform 1: Using an oscilloscope:

      Terminal Connections

      B7-1 (TACH)*1 - Body ground

      B9-4 (TACH)*2 - Body ground

      B8-7 (TAC)*3 - Body ground
      Tester Range 5 V/DIV., 10 ms /DIV.
      Vehicle Condition Engine idle speed

      *1: for 2TR-FE

      *2: for 1KD-FTV or 2KD-FTV

      *3: for 5L-E

    2. A01BATNE01

      Waveform 2: Using an oscilloscope:

      Terminal Connections

      B7-14 (THWO)*1 - Body ground

      B9-2 (THWO)*2 - Body ground

      B10-8 (THWO)*3 - Body ground
      Tester Range 5 V/DIV., 100 ms /DIV.
      Vehicle Condition Ignition switch ON, engine idle speed

      *1: for 2TR-FE

      *2: for 1KD-FTV or 2KD-FTV

      *3: for 5L-E

    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

    A01BE73E01
    A01BEICE01