METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A017D1LE01
    Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
    E1-1 (IG+) - Body ground O - Body ground Ignition switch signal Ignition switch off Below 1 V
    Ignition switch on (IG) 11 to 14 V
    E1-2 (B) - Body ground G - Body ground Turn indicator light signal Ignition switch on (IG), turn signal LH indicator light OFF Below 1 V
    Ignition switch on (IG), turn signal LH indicator light ON 11 to 14 V
    E1-3 (B) - Body ground GR - Body ground Turn indicator light signal Ignition switch on (IG), turn signal RH indicator light OFF Below 1 V
    Ignition switch on (IG), turn signal RH indicator light ON 11 to 14 V
    E1-4 (SW1) - Body ground B - Body ground Light control rheostat signal (Tail cancel switch) Ignition switch on (IG), turn the light control rheostat knob fully downwards (Tail cancel off) Below 1 V
    Ignition switch on (IG), turn the light control knob rheostat fully upwards (Tail cancel on) 4 to 6 V
    E1-7 (S) - Body ground Y - Body ground Oil pressure warning light signal Ignition switch on (IG), oil pressure warning light OFF 11 to 14 V
    Ignition switch on (IG), oil pressure warning light ON Below 1.5 V
    E1-8 (WLVL) - Body ground P - Body ground Washer level warning light signal Ignition switch on (IG), WASHER warning light OFF 11 to 14 V
    Ignition switch on (IG), WASHER warning light ON Below 1.5 V
    E1-9 (+S) - Body ground LG - Body ground Speed signal for other system (Output) Turn the wheel slowly

    Pulse generation

    (See waveform)
    E1-10 (CHK) - Body ground W - Body ground MIL (Check engine warning light) signal Ignition switch on (IG), MIL ON Below 1 V
    Ignition switch on (IG), MIL OFF 11 to 14 V
    E1-11 (P/SB) - Body ground O - Body ground Front passenger side seat belt buckle switch signal Ignition switch on (IG), front passenger side seat belt unfastened 11 to 14 V
    Ignition switch on (IG), front passenger side seat belt fastened Below 1 V
    E1-14 (MSSL) (*1) - Body ground P - Body ground Steering pad switch signal Ignition switch on (IG), DISP switch OFF 4 to 6 V
    Ignition switch on (IG), DISP switch ON Below 1 V
    E1-16 (LCL+) (*1) - Body ground SB - Body ground Multi-information display signal Ignition switch off Below 1 V
    Ignition switch on (IG) 11 to 14 V
    E1-17 (LCL-) (*1) - Body ground G - Body ground Multi-information display signal Ignition switch off Below 1 V
    Ignition switch on (IG) 11 to 14 V
    E1-18 (E3) - Body Ground W-B - Body ground Ground Always Below 1 V
    E1-19 (FE) - Body ground W-B - Body ground Ground (Fuel ground) Always Below 1 V
    E1-20 (ES) - Body ground R - Body ground Ground (Signal ground) Always Below 1 V
    E1-21 (B) - Body ground SB - Body ground Battery Always 11 to 14 V
    E1-22 (B2) - Body ground BR - Body ground Battery Always 11 to 14 V
    E1-23 (TC) - Body ground R - Body ground Light control rheostat signal (Tail cancel switch) Ignition switch on (IG), turn the light control rheostat knob fully downwards 4 to 6 V
    Ignition switch on (IG), turn the light control rheostat knob fully upwards Below 1 V
    E1-24 (SW2) - Body ground BR - Body ground Light control rheostat signal Ignition switch on (IG), rheostat knob position is MIN. Below 1 V
    Ignition switch on (IG), rheostat knob position is MAX. 4 to 6 V
    E1-25 (CANH) - Body ground P - Body ground CAN communication line - -
    E1-26 (CANL) - Body ground W - Body ground CAN communication line - -
    E1-28 (B/LE) - Body ground SB - Body ground Brake fluid level warning light signal Ignition switch on (IG), BRAKE warning light OFF 11 to 14 V
    Ignition switch on (IG), BRAKE warning light ON Below 1.5 V
    E1-29 (SI) - Body ground BR - Body ground Speed signal for other system (Input) Ignition switch on (IG), turn the wheel slowly

    Pulse generation

    (See waveform)
    E1-30 (ILL-) - Body ground R - Body ground Illumination signal Ignition switch on (IG), light control switch is in the HEAD or TAIL position 11 to 14 V
    E1-31 (PBLT) - Body ground BR - Body ground Passenger seat belt warning light signal Sit on the passenger seat, ignition switch on (IG), passenger seat belt warning light OFF 11 to 14 V
    Sit on the passenger seat, ignition switch on (IG), front passenger side seat belt warning light is blinking Below 1 V
    E1-32 (CHG-) - Body ground V - Body ground Charge warning light signal Ignition switch on (IG), charge warning light ON Below 1.5 V
    Ignition switch on (IG), charge warning light OFF 11 to 14 V
    E1-34 (FR) - Body ground GR - Body ground Fuel signal Ignition switch on (IG), fuel level is FULL Below 2 V
    Ignition switch on (IG), fuel level is EMPTY 4 to 7 V
    E1-36 (MCLK) (*1) - Body ground R - Body ground Multi-information display signal Ignition switch on (IG) Pulse generation
    E1-37 (MDAT) (*1) - Body ground Y - Body ground Multi-information display signal Ignition switch on (IG) Pulse generation
    E1-38 (SYNC) (*1) - Body ground L - Body ground Multi-information display signal Ignition switch on (IG) Pulse generation
    E1-39 (SW3) - Body ground P - Body ground Light control rheostat signal Ignition switch on (IG), rheostat knob position is MIN. Below 1 V
    Ignition switch on (IG), rheostat knob position is MAX. 4 to 6 V
    E1-40 (E2) - Body Ground W - Body ground Ground (Power ground) Always Below 1 V

    *1: w/ Multi-information Display


    1. A017G7LE03

      Waveform (Reference): Using oscilloscope:

      Item Condition
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Driving at approx. 20 km/h (12 mph)

      Tech Tips

      When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

  2. COMBINATION METER INNER CIRCUIT


    1. Combination Meter Inner Circuit

      A017E3EE02
      A017DU4E02
      A017G9ZE01
      Terminal No. Wire Harness Side
      E1 1 No. 2 Gauge Fuse (IG+)
      2 Turn Signal Flasher (B)
      3 Turn Signal Flasher (B)
      4 Light Control Rheostat (SW1)
      5 -
      6 -
      7 Oil Pressure Switch (S)
      8 Washer Level Warning Switch (WLVL)
      9 Each part that uses speed signal (+S)
      10 ECM (CHK)
      11 Front Passenger Seat (P/SB)
      12 -
      13 -
      14 Steering Pad Switch (MSSL) (*1)
      15 -
      16 Clock Assembly (LCL+) (*1)
      17 Clock Assembly (LCL-) (*1)
      18 Ground (E3)
      19 Fuel Sender Gauge Assembly (FE)
      20 Ground (ES)
      21 ECU-B Fuse (B)
      22 DOME Fuse (B2)
      23 Light Control Rheostat (TC)
      24 Light Control Rheostat (SW2)
      25 CAN Communication Line (CANH)
      26 CAN Communication Line (CANL)
      27 -
      28 Brake Fluid Level Warning Switch (B/LE)
      29 Skid Control ECU (SI)
      30 ALTER Fuse (ILL-)
      31 Hazard Warning Switch (PBLT)
      32 Generator (CHG-)
      33 -
      34 Fuel Sender Gauge Assembly (FR)
      35 -
      36 Clock Assembly (MCLK) (*1)
      37 Clock Assembly (MDAT) (*1)
      38 Clock Assembly (SYNC) (*1)
      39 Light Control Rheostat (SW3)
      40 Ground (E2)

      *1: w/ Multi-information Display