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


  1. CHECK COMBINATION METER ASSEMBLY

    A01KFCFE01

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      C13-2 - Body ground R-G - Body ground Hi beam signal

      Hi beam indicator light

      OFF → ON

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

      Glow indicator

      ON → OFF

      		 Below 1 V → 5 to 7 V
      C13-5 - Body ground BR - Body ground Ground (Vehicle speed sensor) Always Below 1 V
      C13-12 - Body ground*1 L-W - Body ground Oil condition signal Ignition switch ON Pulse generation
      C13-14 - Body ground P-L - Body ground Oil pressure signal

      Oil pressure warning light

      ON → OFF

      		 Below 1 V → 10 to 14 V
      C13-16 - Body ground B-Y - Body ground Brake warning light signal

      Brake warning light

      OFF → ON

      		 10 to 14 V → Below 1 V
      C13-17 - Body ground G-Y - Body ground Right turn signal

      Right turn indicator light

      OFF → ON

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

      Left turn indicator light

      OFF → ON

      		 Below 1 V → 11 to 14 V
      C13-25 - Body ground W-B - Body ground Ground Always Below 1 V
      C13-26 - Body ground Y - Body ground Fuel sender signal Ignition switch ON 10 to 14 V
      C13-27 - Body ground L-Y - Body ground Battery Always 11 to 14 V
      C13-28 - Body ground R - Body ground Ignition switch signal

      Ignition switch

      OFF → ON

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

      Headlight dimmer switch

      OFF → ON

      		 Below 1 V → 11 to 14 V
      C13-30 - Body ground W-B - Body ground Ground Always Below 1 V
      C13-31 - Body ground BR - Body ground Ground Always Below 1 V
      C13-32 - Body ground R-W - Body ground Front door LH courtesy light switch signal Front door LH open Below 1 V
      Front door LH closed Pulse generation
      C13-35 - Body ground B - Body ground Engine speed signal from ECM Engine idling

      Pulse generation

      (See waveform 1)
      C13-36 - Body ground V-Y - Body ground Vehicle speed sensor signal Driving at approximately 20 km/h (12 mph)

      Pulse generation

      (See waveform 2)
      C13-37 - Body ground V-W - Body ground Vehicle speed signal output to ECM Driving at approximately 20 km/h (12 mph)

      Pulse generation

      (See waveform 2)
      C13-39 - Body ground B-R - 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 R-Y - Body ground ABS warning light signal

      ABS warning light

      OFF → ON

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

      Fuel filter warning light

      OFF → Blinking

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

      Ignition switch ON (engine stopped)

      →

      Engine idling

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

      Ignition switch

      OFF → ON

      		 Below 1 V → 11 to 14 V
      C14-10 - Body ground*6 V - Body ground DPF warning light signal

      DPF warning light

      OFF → ON

      		 11 to 14 V → Below 1 V
      C14-12 - Body ground W - 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 B-Y - Body ground SRS warning switch signal

      SRS warning light

      OFF → ON

      		 11 to 14 V → 3 to 6 V
      C14-23 - Body ground W-L - Body ground MIL signal

      MIL

      OFF → ON

      		 10 to 14 V → Below 1 V

      • *1: w/ Heater

      • *2: w/o Heater

      • *3: w/ ABS

      • *4: w/o ABS

      • *5: w/ Airbag System

      • *6: w/ DPF

    2. A01KEJ0E21

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

      Item Condition
      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 (w/o EGR Cooler Bypass Valve)

    A01KFUOE56

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E6-19 (THW) - E6-28 (E2) B-Y - BR Engine coolant temperature signal Ignition switch ON Pulse generation
      E7-2 (THWO) - E6-7 (E01) R-L - BR Engine coolant temperature signal Ignition switch ON Pulse generation
      E7-4 (TACH) -E6-7 (E01) B - BR Engine speed signal Engine idling Pulse generation (See waveform 3)
      E7-14 (GIND) - Body ground Y-R - Body ground Glow signal Glow indicator ON→ OFF Below 1 V → 11 to 14 V
    2. A01KEJ0E21

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

      Item Condition
      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 ECM (w/ DPF)

    A01KH1YE01

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E13-5 (THW) - E13-11 (ETHW) B-Y - BR Engine coolant temperature signal Idling, engine coolant temperature at 80°C (176°F) 0.2 to 1.0 V
      E17-18 (TACH) - E10-1 (E1) B - BR Engine speed signal Engine idling Pulse generation (See waveform 4)
      E16-19 (GIND) - Body ground G-W - Body ground Glow signal Glow indicator ON → OFF Below 1 V → 11 to 14 V
      E16-34 (OPID) - E10-12 (E01) P-L - BR DPF warning light signal DPF warning light ON → OFF Below 1 V → 11 to 14 V
    2. A01KEJ0E21

      Waveform 4: Using an oscilloscope, check the signal waveform.

      Item Condition
      Terminal No. E17-18 (TACH) - E10-12(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.

  4. CHECK COMBINATION METER INNER CIRCUIT

    A01KFSJE01
    A01KH9VE01
    A01KIQRE01
    A01KEBRE02
    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
    12 ECM*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
    31 Front Door Courtesy Light Switch Assembly
    35 ECM
    36 Speedometer Sensor
    37 ECM
    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
    10 ECM
    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