METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A003E76E06
    Terminal No. (Symbols) Wiring Color Terminal Description Condition Specified Condition
    H20-1 (L) - H20-21 (E1) R - W-B Power source Always 11 to 14 V
    H20-2 (IG+) - H20-21 (E1) B - W-B Power source (IG) Ignition switch off → ON Below 1 V → 11 to 14 V
    H20-3 (ILL+) - H20-21 (E1) G - W-B Illumination signal Tail switch off → on Below 1 V → 11 to 14 V
    H20-4 (DCTY) - H20-21 (E1) G - W-B Driver side door condition signal Driver side door open → closed Below 1 V → 8.5 to 13.5 V
    H20-5 (DOOR) - H20-21 (E1) G - W-B Except driver side door condition signal Except driver side door open → closed Below 1 V → 11 to 14 V
    H20-6 (+S) - H20-21 (E1) P - W-B Speed signal (output) Ignition switch ON, driving at approximately 20 km/h (12 mph) Pulse generation (See waveform 1)
    H20-7 (SI) - H20-21 (E1) P - W-B Speed signal (input) Ignition switch ON, driving at approximately 20 km/h (12 mph) Pulse generation (See waveform 1)
    H20-8 (OIL) - H20-21 (E1) Y - W-B Oil level signal Ignition switch ON, OIL warning light on → off 8 to 13 V → Below 1 V
    H20-9 (KEYE) - H20-21 (E1)*1 Y - W-B Unlock warning switch signal No key in ignition key cylinder → Key in ignition key cylinder 8.5 to 13.5 V → Below 1 V
    H20-10 (L) - H20-21 (E1) LG - W-B Driver side seat belt signal Ignition switch ON, driver side seat belt not unfastened → fastened Below 1 V → 7.5 to 12.5 V
    H20-11 (PKBI) - H20-21 (E1) B - W-B Parking brake switch signal Parking brake lever pulled → released Below 1 V → 9 to 13 V
    H20-12 (HA) - H20-21 (E1)*10 G - W-B Engine oil pressure signal Ignition switch ON, SEDIMENT/FILTER indicator light on → off 8 to 13 V → Below 1 V
    H20-14 (OILW) - H20-21 (E1)*2 W - W-B Engine oil pressure signal Ignition switch ON, SEDIMENT/FILTER indicator light blinking → off Below 1 V ←→ 11 to 14 V → Below 1 V
    H20-15 (CHG-) - H20-21 (E1)*8 B - W-B Charge malfunction signal Ignition switch ON, CHARGE warning light on → off Below 1 V → 9 to 13 V
    H20-17 (+) - H20-21 (E1) B - W-B BEAM indicator light signal BEAM indicator light off → on Below 1 V → 11 to 14 V
    H20-18 (FOG) - H20-21 (E1)*3 Y - W-B Fr FOG indicator light signal Ignition switch ON, Fr FOG indicator light off → on Below 1 V → 11 to 14 V
    H20-19 (RFOG) - H20-21 (E1)*4 R - W-B Rr FOG indicator light signal Ignition switch ON, Rr FOG indicator light off → on Below 1 V → 11 to 14 V
    H20-21 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
    H20-22 (CANL) W CAN communication line - -
    H20-23 (CANH) B CAN communication line - -
    H20-24 (R) - H20-21 (E1) L - W-B Reverse signal Ignition switch ON, shift position except R→ shift position in R Below 1 V → 11 to 14 V
    H20-25 (SW) - H20-21 (E1) GR - W-B Headlight dimmer switch signal (right turn or left turn position) Ignition switch ON, headlight dimmer switch off → headlight dimmer switch in right turn or left turn position 11 to 14 V → Below 1 V
    H20-26 (ER) - H20-21 (E1) Y - W-B Headlight dimmer switch signal (right turn position) Ignition switch ON, headlight dimmer switch off → headlight dimmer switch in right turn position 11 to 14 V → Below 1 V
    H20-27 (EL) - H20-21 (E1) B - W-B Headlight dimmer switch signal (left turn position) Ignition switch ON, headlight dimmer switch off → headlight dimmer switch in left turn position 11 to 14 V → Below 1 V
    H20-28 (HAZ) - H20-21 (E1) W - W-B Hazard warning switch signal Hazard warning switch off → 11 to 14 V → Below 1 V
    H20-29 (LP) - H20-21 (E1) R - W-B Security indicator light signal Ignition switch ON, security indicator light blinking → off Below 1 V ←→ 11 to 14 V → Below 1 V
    H20-30 (P/SB) - H20-21 (E1) W - W-B Front seat belt warning light signal Ignition switch ON, front passenger side seat belt unfastened and front passenger seat occupied → front passenger side seat belt fastened and front passenger seat occupied 11 to 14 V → Below 1 V
    H20-31 (B/LE) - H20-21 (E1) B - W-B Brake fluid level warning switch signal Ignition switch ON, brake fluid level warning switch on → off Below 1 V → 11 to 14 V
    H20-32 (BRL) - H20-21 (E1)*10 SB - W-B Brake vacuum warning switch signal Ignition switch ON, engine idle speed Pulse generation (See waveform 2)
    H20-33 (FUEL) - H20-21 (E1) Y - W-B Fuel receiver gauge signal Ignition switch ON, fuel receiver gauge F → E Below 3.6 V → 3.6 to 9 V
    H20-34 (E2) - H20-21 (E1) R - W-B Fuel receiver gauge ground Always Below 1 Ω
    H20-35 (E3) - H20-21 (E1)*5 G - W-B Speed signal ground Always Below 1 Ω
    H20-36 (TX1+) - H20-21 (E1) W - W-B Ambient temperature sensor ground Always Below 1 Ω
    H20-37 (TX1-) - H20-21 (E1) G - W-B Ambient temperature sensor signal Ambient temperature 25°C (77°F) 1.6 to 1.8 kΩ
    H20-38 (DRLE) - H20-21 (E1)*6 Y - W-B Daytime running light system drive output Daytime running light system not operating → operating 11 to 14 V → Below 1 V
    H71-1 (B) - H20-21 (E1) L - W-B Power source Always 11 to 14 V
    H71-2 (IND) - H20-21 (E1)*11 W-B - W-B Ground Always Below 1 Ω
    H71-6 (ABOF) - H20-21 (E1)*9 R - W-B Power source (IG) Ignition switch off → ON Below 1 V → 11 to 14 V
    H71-12 (RL) - H20-21 (E1)*7 W - W-B Headlight leveling switch signal Headlight dimmer switch TAIL or HEAD Below 1 V
    H71-7 (LR) - H20-21 (E1) R - W-B RH turn signal light signal output Ignition switch ON, RH turn signal light blinking → off Pulse generation → Below 1 V
    H71-13 (LL) - H20-21 (E1) L - W-B LH turn signal light signal output Ignition switch ON, LH turn signal light blinking → off Pulse generation → Below 1 V

    • *1: w/o Smart Entry and Start System

    • *2: except 1KD-FTV (w/ DPF)

    • *3: w/ Front Fog Light

    • *4: w/ Rear Fog Light

    • *5: w/ Speedometer Sensor

    • *6: w/ Daytime Running Light

    • *7: for LED Headlight

    • *8: for 2TR-FE (w/o Dual VVT-i), 1KD-FTV, 2KD-FTV or 5L-E

    • *9: w/o Airbag System

    • *10: Engine Type Diesel

    • *11: w/o ABS


    1. A003EKPE01

      Waveform 1 (Reference): Using an oscilloscope:

      Item Condition
      Tester Connection

      H20-6 (+S) - H20-21 (E1)

      H20-7 (SI) - H20-21 (E1)
      Tool Setting 5 V/DIV., 20 ms/DIV.
      Vehicle Condition Ignition switch ON, driving at approximately 20 km/h (12 mph)
    2. A003HY4E02

      Waveform 2 (Reference): Using an oscilloscope:

      Item Condition
      Tester Connection H20-32 (BRL) - H20-21 (E1)
      Tool Setting 5 V/DIV., 10 ms/DIV.
      Vehicle Condition Ignition switch ON, engine idle speed

  2. COMBINATION METER INNER CIRCUIT

    A003BA9E01
    A003I2BE02
    A003CBME01
    A003DNIE01