METER / GAUGE SYSTEM (for 1KD-FTV) TERMINALS OF ECU


  1. CHECK COMBINATION METER ASSEMBLY

    A01KFCFE01

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

      Standard
      Terminal No. (Symbol) Terminal Description Condition Specified Condition
      C13-2 - Body ground Hi beam signal

      Hi beam indicator light

      off → on

      		 Below 1 V → 11 to 14 V
      C13-3 - Body ground Glow signal

      Glow indicator

      on → off

      		 Below 1 V → 11 to 14 V
      C13-5 - Body ground Ground (Vehicle speed sensor) Always Below 1 V
      C13-11 - Body ground*1 Oil change light reset switch signal

      Oil change light reset switch

      off → on

      		 1 MΩ or higher → Below 1 Ω
      C13-12 - Body ground*1 Oil change light signal

      Oil change light

      off → on

      		 11 to 14 V → Below 1 V
      C13-14 - Body ground Oil pressure signal

      Oil pressure warning light

      on → off

      		 Below 1 V → 11 to 14 V
      C13-16 - Body ground Brake warning light signal

      Brake warning light

      off → on

      		 11 to 14 V → Below 1 V
      C13-17 - Body ground Right turn signal

      Right turn indicator light

      off → on

      		 Below 1 V → 11 to 14 V
      C13-18 - Body ground Engine coolant temperature signal from ECM Ignition switch ON Pulse generation
      C13-24 - Body ground Left turn signal

      Left turn indicator light

      off → on

      		 Below 1 V → 11 to 14 V
      C13-25 - Body ground Ground Always Below 1 V
      C13-26 - Body ground Fuel sender signal Ignition switch ON 11 to 14 V
      C13-27 - Body ground Battery Always 11 to 14 V
      C13-28 - Body ground Ignition switch signal

      Ignition switch

      off → ON

      		 Below 1 V → 11 to 14 V
      C13-29 - Body ground Illumination signal

      Headlight dimmer switch

      off → on

      		 Below 1 V → 11 to 14 V
      C13-30 - Body ground Ground Always Below 1 V
      C13-31 - Body ground Ground Always Below 1 V
      C13-35 - Body ground Engine speed signal from ECM Engine running

      Pulse generation

      (See waveform 1)
      C13-36 - Body ground Vehicle speed sensor signal Ignition switch ON and drive wheel turned slowly

      Pulse generation

      (See waveform 2)
      C13-37 - Body ground Vehicle speed signal output to ECM Ignition switch ON and drive wheel turned slowly

      Pulse generation

      (See waveform 2)
      C13-38 - Body ground*1 Vehicle speed signal output to Oil Monitor System Ignition switch ON and drive wheel turned slowly

      Pulse generation

      (See waveform 2)
      C13-39 - Body ground Engine oil level warning switch signal

      Oil level warning light

      off → on

      		 Below 1 V → 11 to 14 V
      C13-40 - Body ground*3 ABS warning light signal

      ABS warning light

      off → on

      		 11 to 14 V → Below 1 V
      C13-40 - Body ground*4 Ground Always Below 1 V
      C14-3 - Body ground*2 Fuel sedimenter switch signal

      Fuel filter warning light

      off → Blinking

      		 11 to 14 V → Below 1 V
      C14-6 - Body ground Ground Always Below 1 V
      C14-7 - Body ground Charge signal

      Ignition switch ON (engine stopped)

      →

      Engine idling

      		 Below 1 V → 11 to 14 V
      C14-8 - Body ground Ignition switch signal

      Ignition switch

      off → ON

      		 Below 1 V → 11 to 14 V
      C14-12 - Body ground Fuel filter warning switch signal

      Fuel filter warning light

      off → on

      		 11 to 14 V → Below 1 V
      C14-19 - Body ground*5 SRS warning switch signal

      SRS warning light

      off → on

      		 11 to 14 V → Below 1 V
      C14-23 - Body ground MIL signal

      MIL

      off → on

      		 11 to 14 V → Below 1 V

      *1: w/ Heater

      *2: w/o Heater

      *3: w/ ABS

      *4: w/o ABS

      *5: w/ Airbag system

    2. A01KEJ0E21

      Waveform 1: Using an oscilloscope, check the signal waveform.

      Item Content
      Terminal No. C13-35 - Body ground
      Tool setting 5 V/DIV., 10 msec./DIV.
      Vehicle condition Engine idling

      Tech Tips

      As the vehicle speed increases, the cycle of the signal waveform narrows.

    3. A01KG66E49

      Waveform 2: Using an oscilloscope, check the signal waveform.

      Item Condition
      Terminal No. C13-36 - Body ground
      Tool setting 5 V/DIV., 20 msec./DIV.
      Vehicle condition Driving at approximately 20 km/h (12 mph)

  2. CHECK ECM

    A01KFUOE56

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

      Standard
      Terminal No. (Symbol) Terminal Description Condition Specified Condition
      E6-19 (THW) - E6-28 (E2) Engine coolant temperature signal Ignition switch ON Pulse generation
      E7-2 (THWO) - E6-7 (E01) Engine coolant temperature signal Ignition switch ON Pulse generation
      E7-4 (TACH) -E6-7 (E01) Engine speed signal Engine running Pulse generation (See waveform 1)
      E7-14 (GIND) - Body ground Glow signal Glow indicator on→ off Below 1 V → 11 to 14 V

      *1: w/ Heater

      *2: w/o Heater

    2. A01KEJ0E21

      Waveform 3: Using an oscilloscope, check the signal waveform.

      Item Content
      Terminal No. E7-4 (TACH) -E6-7 (E01)
      Tool setting 5 V/DIV., 10 msec./DIV.
      Vehicle condition Engine idling

      Tech Tips

      As the vehicle speed increases, the cycle of the signal waveform narrows.

  3. CHECK COMBINATION METER INNER CIRCUIT

    A01KFSJE01
    A01KH9VE01
    A01KGVWE01
    A01KFNME01
    Table of terminal connection
    Terminal No. (Symbol) Wire Harness Side
    C13 2

    H-LP Fuse (HI RH)*6

    Headlight (HI LH and RH)*7
    3 ECM
    5 Speedometer Sensor
    11 Condition Indicator ECU Assembly (Oil Monitor ECU)*1
    12 Condition Indicator ECU Assembly (Oil Monitor ECU)*1
    14 Engine Oil Pressure Switch Assembly
    16 Parking Brake Switch Assembly, Vacuum Warning Switch Assembly and Brake Master Cylinder Reservoir Sub-Assembly (Brake Fluid Level Warning Switch)
    17 Combination Switch
    18 ECM
    24 Combination Switch
    25 Ground
    26 Fuel Sender Gauge Assembly
    27 DOME Fuse
    28

    IG1 NO. 2 Fuse*1

    GAUGE Fuse*2
    29 TAIL Relay
    30 Ground
    31 Ground
    35 ECM
    36 Speedometer Sensor
    37 ECM
    38 Condition Indicator ECU Assembly (Oil Monitor ECU)*1
    39 Engine Oil Level Sensor (Engine Oil Level Warning Switch)
    40

    Skid Control ECU Assembly (ABS ECU)*3

    Ground*4
    C14 3*2 Level Warning Switch (Fuel Sedimenter Switch)
    6 Ground
    7 Generator Assembly (Alternator)
    8

    IG1 NO. 2 Fuse*1

    GAUGE Fuse*2
    12 Fuel Filter Warning Switch
    19*5 Airbag ECU Assembly
    23 ECM

    *1: w/ Heater

    *2: w/o Heater

    *3: w/ ABS

    *4: w/o ABS

    *5: w/ Airbag system

    *6: w/ Daytime running light Control

    *7: w/o Daytime running light System