METER / GAUGE SYSTEM TERMINALS OF ECU


  1. CHECK COMBINATION METER

    A01INPOE02

    1. Measure the resistance and voltage according to the value(s) in the table below.

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      H62-3 (+S) - Body ground Y - Body ground Speed signal (output) Vehicle being driven approximately 20 km/h (12 mph) Pulse generation (See waveform 1)
      H62-5 (SI) - Body ground V - Body ground Speed signal (input) Vehicle being driven approximately 20 km/h (12 mph) Pulse generation (See waveform 1)
      H62-7 (WRNP) - Body ground BE - Body ground Front passenger side seat belt warning light signal Passenger seat belt indicator off 11 to 14 V
      Passenger seat belt indicator blinking Alternating between below 1 and 11 to 14 V
      H62-10 (SW) - Body ground SB - Body ground Brake fluid level warning light signal Ignition switch ON, brake system warning light (red indicator) on Below 1 V
      Ignition switch ON, brake system warning light (red indicator) off 11 to 14 V
      H62-11 (PKB1) - Body ground L - Body ground Passenger side seat belt condition signal Ignition switch ON, front passenger side seat belt warning light off 11 to 14 V
      Ignition switch ON, front passenger side seat belt warning light on Below 1 V
      H62-12 (LVWG) - Body ground GR - Body ground LEVELING indicator light signal Ignition switch ON, headlight dimmer switch set to head Below 1 V
      Ignition switch ON, headlight dimmer switch not set to head 11 to 14 V
      H62-13 (MSD) - Body ground*1 R - Body ground Rear seat 3 point type inner belt assembly LH Rear seat inner belt LH unfastened Below 1 V
      Rear seat inner belt LH fastened 11 to 14 V
      H62-14 (MSTI) - Body ground*1 W - Body ground Rear seat inner belt assembly (for LH Side) Rear seat center belt unfastened Below 1 V
      Rear seat center belt fastened 11 to 14 V
      H62-15 (MSFM) - Body ground*1 B - Body ground Rear seat 3 point type inner belt assembly RH Rear seat inner belt RH unfastened Below 1 V
      Rear seat inner belt RH fastened 11 to 14 V
      H62-16 (OILW) - Body ground*2 G - Body ground Engine oil level signal Ignition switch ON, ENGINE OIL LOW displayed Below 1 V
      Ignition switch ON, ENGINE OIL LOW not displayed 11 to 14 V
      H62-17 (S) - Body ground Y - Body ground Engine oil pressure signal Ignition switch ON, ENGINE OIL PRESSURE LOW displayed Below 1 V
      Ignition switch ON, ENGINE OIL PRESSURE LOW not displayed 11 to 14 V
      H62-19 (B) - Body ground L - Body ground Turn signal R Ignition switch ON, turn signal switch neutral position Below 1 V
      Ignition switch ON, turn signal switch turned to right Alternating between below 1 and 11 to 14 V
      H62-20 (B) - Body ground Y - Body ground Turn signal L Ignition switch ON, turn signal switch neutral position Below 1 V
      Ignition switch ON, turn signal switch turned to left Alternating between below 1 and 11 to 14 V
      H62-21 (ET) - Body ground BR - Body ground Ground Always Below 1 V
      H62-22 (CANH) - Body ground SB - Body ground CAN communication signal Ignition switch off 200 Ω or higher
      H62-23 (CANL) - Body ground W - Body ground CAN communication signal Ignition switch off 200 Ω or higher
      H62-24 (E) - Body ground BR - Body ground Fuel sender gauge ground Always Below 1 Ω
      H62-25 (TX1+) - Body ground L - Body ground Cooler thermistor (ambient temperature sensor) ground Always Below 1 Ω
      H62-28 (S) - Body ground*2 R - Body ground Fuel sedimenter signal Ignition switch ON, DRAIN WATER FROM FUEL FILTER displayed Below 1 V
      Ignition switch ON, DRAIN WATER FROM FUEL FILTER not displayed 11 to 14 V
      H62-29 (EFI) - Body ground P - Body ground MIL (check engine indicator light) signal Ignition switch ON, MIL on Below 1 V
      Ignition switch ON, MIL off 11 to 14 V
      H62-30 (CHG-) - Body ground Y - Body ground CHARGE warning light Ignition switch ON, CHARGE warning light on Below 1 V
      Ignition switch ON, CHARGE warning light off 11 to 14 V
      H62-32 (SW1) - Body ground B - Body ground Spiral cable signal Ignition switch ON, steering pad DISP switch signal off Below 1 V
      Ignition switch ON, steering pad DISP switch signal on 11 to 14 V
      H62-33 (TEMP) - Body ground W - Body ground Cooler thermistor (ambient temperature sensor) signal Outside temperature 25°C (77°F) 1.6 to 1.8 Ω*4
      H62-34 (MSM+) - Body ground*3 G - Body ground Rear No. 2 seat belt sub-assembly Rear No. 2 seat belt unfastened Below 1 V
      Rear No. 2 seat belt fastened 11 to 14 V
      H62-35 (MS+) - Body ground*3 L - Body ground Rear No. 2 seat belt sub-assembly Rear No. 2 seat belt unfastened Below 1 V
      Rear No. 2 seat belt fastened 11 to 14 V
      H62-37 (L) - Body ground Y - Body ground Fuel sender gauge signal Fuel F (full tank) to E (empty) 4.5 to 9 V
      H62-39 (IG+) - Body ground P - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      H62-40 (B) - Body ground W - Body ground Battery Always 11 to 14 V

      • *1: w/ Rear No. 1 Seat

      • *2: for AD Series Engine

      • *3: w/ Rear No. 2 Seat

      • *4: The standard value changes according to the outside temperature.


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

    2. A01IQ7DE03

      Using an oscilloscope, check waveform 1.

      Measurement Condition
      Item Condition
      Terminal No. (Symbol)

      • H62-3 (+S) - Body ground

      • H62-5 (SI) - Body ground
      Tool setting 5 V/DIV., 20 ms./DIV.
      Condition Being driven 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. CHECK COMBINATION METER INNER CIRCUIT

    A01IRLPE01
    A01IQCSE01
    A01IPMHE01
    A01ITWHE01
    A01IS8ZE01

    • *1: w/ Rear No. 1 Seat

    • *2: w/ Rear No. 2 Seat

    • *3: for LHD

    • *4: for RHD

    • *5: for AD Series Engine

    • *6: w/ Cruise Control System

    • *7: except Manual Transaxle

    • *8: w/ VSC

    • *9: for Manual Transaxle

    • *10: w/ Rear Fog Light

    • *11: w/ Front Fog Light

    • *12: w/ HID Headlight System

    Connectors
    Terminal No. Wire Harness Side
    H62 1 -
    2 -
    3 Each part that uses the vehicle speed signal
    4 -
    5 Brake actuator assembly
    6 -
    7 Center airbag sensor assembly
    8 -
    9 -
    10 Brake fluid level warning switch
    11 Occupant detection switch
    12*1 Headlight leveling ECU assembly
    13*2 Rear seat 3 point type inner belt assembly LH
    14*2 Rear seat inner belt assembly (for LH Side)
    15*2 Rear seat 3 point type inner belt assembly RH
    16*3 Engine oil level sensor
    17 Engine oil pressure switch assembly
    18 -
    19 Turn signal flasher assembly
    20 Turn signal flasher assembly
    21 Ground
    22 CAN communication line
    23 CAN communication line
    24 Fuel sender gauge assembly
    25 Cooler thermistor (ambient temperature sensor)
    26 -
    27 -
    28*3 Level warning switch
    29 ECM
    30 Generator
    31 -
    32 Steering pad switch assembly
    33 Cooler thermistor (ambient temperature sensor)
    34*4 Rear No. 2 seat belt sub-assembly
    35*4 Rear No. 2 seat belt sub-assembly
    36 -
    37 Fuel sender gauge assembly
    38 -
    39 IG2 relay
    40 Battery

    • *1: w/ HID Headlight System

    • *2: w/ Rear No. 1 Seat

    • *3: for AD Series Engine

    • *4: w/ Rear No. 2 Seat