METER / GAUGE SYSTEM TERMINALS OF ECU

  1. COMBINATION METER ASSEMBLY

    E235640N05

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

      Terminal No. (Symbol)

      Wiring Color

      Terminal Description

      Condition

      Specified Condition

      G16-2 (ILL-) - Body ground

      LG - Body ground

      Outside dimmer signal (LED)

      Ignition switch ON, light control rheostat position max

      Below 1 V

      Ignition switch ON, light control rheostat position min

      11 to 14 V

      G16-5 (SI) - Body ground

      V - Body ground

      Speed signal for other systems (Input)

      Driving at approximately 20 km/h (12 mph)

      Pulse generation

      (See waveform 1)

      G16-6 (+S) - Body ground

      LG - Body ground

      Speed signal for other systems (Output)

      Driving at approximately 20 km/h (12 mph)

      Pulse generation

      (See waveform 1)

      G16-7 (P/SB) - Body ground*8

      L - Body ground

      Passenger side seat belt signal

      Ignition switch ON, passenger side seat occupied, Seat belt fastened

      11 to 14 V

      Ignition switch ON, passenger side seat occupied, seat belt unfastened

      Below 1 V

      G16-8 (S) - Body ground*1

      R - Body ground

      Level warning switch signal

      Ignition switch ON, level warning switch off

      11 to 14 V

      Ignition switch ON, level warning switch on

      Below 1 V

      G16-9 (S) - Body ground*2*6

      L - Body ground

      Engine oil pressure switch signal

      Ignition switch ON, engine oil pressure switch off

      11 to 14 V

      Ignition switch ON, engine oil pressure switch on

      Below 1 V

      G16-10 (WLVL) - Body ground*7

      LG - Body ground

      Level warning switch signal

      Ignition switch ON, washer level indicator light off

      11 to 14 V

      Ignition switch ON, washer level indicator light on

      Below 1 V

      G16-11 (CHK) - Body ground

      R - Body ground

      MIL signal

      Ignition switch ON, MIL off

      11 to 14 V

      Ignition switch ON, MIL on

      Below 1 V

      G16-12 (SW) - Body ground

      Y - Body ground

      Brake fluid level warning switch signal

      Ignition switch ON, brake fluid level warning switch off

      11 to 14 V

      Ignition switch ON, brake fluid level warning switch on

      Below 1 V

      G16-13 (CHG-) - Body ground

      L - Body ground

      Charge warning light signal

      Ignition switch ON, charge warning light off

      11 to 14 V

      Ignition switch ON, charge warning light on

      Below 1 V

      G16-14 (-) - Body ground

      BR - Body ground

      High beam indicator light ground

      Always

      Below 1 Ω

      G16-15 (E) - Body ground

      GR - Body ground

      Fuel sender gauge ground

      Always

      Below 1 Ω

      G16-16 (L) - Body ground

      SB - Body ground

      Fuel sender gauge signal

      Fuel level F

      Below 1 V

      Fuel level E

      4.5 to 9 V

      G16-19 (+) - Body ground

      R - Body ground

      High beam indicator light signal

      Ignition switch ON, high beam indicator light off

      Below 1 V

      Ignition switch ON, high beam indicator light on

      11 to 14 V

      G16-21 (ET) - Body ground

      BR - Body ground

      Ground

      Always

      Below 1 Ω

      G16-24 (RLSB) - Body ground*1

      G - Body ground

      Rear seat belt LH buckle switch signal

      Rear seat belt LH fastened

      Below 1 V

      Rear seat belt LH unfastened

      11 to 14 V

      G16-25 (RCSB) - Body ground*1

      B - Body ground

      Rear seat center belt buckle switch signal

      Rear seat center belt fastened

      Below 1 V

      Rear seat center belt unfastened

      11 to 14 V

      G16-26 (RRSB) - Body ground*1

      W - Body ground

      Rear seat belt RH buckle switch signal

      Rear seat belt RH fastened

      Below 1 V

      Rear seat belt RH unfastened

      11 to 14 V

      G16-27 (OILW) - Body ground*2

      G - Body ground

      Engine oil level sensor signal

      Ignition switch ON, engine oil level warning display off

      11 to 14 V

      Ignition switch ON, engine oil level warning display on

      Below 1 V

      G16-28 (STRG) - Body ground

      L - Body ground

      Steering pad switch (DISP) signal

      Ignition switch ON, steering pad switch (DISP) off

      4.4 to 5.6 V

      Ignition switch ON, steering pad switch (DISP) on

      Below 1 V

      G16-29 (HAZ) - Body ground

      BE - Body ground

      Turn signal switch (full turn) signal

      Ignition switch ON, turn signal switch (full turn) off

      4.4 to 5.6 V

      Ignition switch ON, turn signal switch (full turn) on

      Below 1 V

      G16-35 (TX1+) - Body ground

      G - Body ground

      Thermistor signal

      Ignition switch ON

      4.4 to 5.6 V

      G16-34 (TX1-) - Body ground

      W - Body ground

      Thermistor signal ground

      Always

      Below 1 V

      G16-39 (IG+) - Body ground

      B - Body ground*3

      P - Body ground*4

      Ignition switch signal

      Ignition switch off

      Below 1 V

      Ignition switch ON

      11 to 14 V

      G16-40 (B) - Body ground

      Y - Body ground

      Battery

      Always

      11 to 14 V

      G17-1 (B) - Body ground

      L - Body ground

      Battery

      Always

      11 to 14 V

      G17-3 (HAZ) - Body ground

      GR - Body ground

      Hazard warning switch signal

      Ignition switch ON, hazard warning switch not pressed

      11 to 14 V

      Ignition switch ON, hazard warning switch pressed

      Below 1 V

      G17-4 (LVWG) - Body ground

      LG - Body ground

      Headlight beam level control system warning light signal

      Ignition switch ON, headlight beam level control system warning light off

      11 to 14 V

      Ignition switch ON, headlight beam level control system warning light on

      Below 1 V

      G17-7 (LR) - Body ground

      L - Body ground

      Turn signal light (RH) signal

      Ignition switch ON, turn signal light (RH) off

      Below 1 V

      Ignition switch ON, turn signal light (RH) on

      11 to 14 V

      G17-9 (ER) - Body ground

      SB - Body ground

      Turn signal switch (RH) signal

      Ignition switch ON, turn signal switch (RH) off

      11 to 14 V

      Ignition switch ON, turn signal switch (RH) on

      Below 1 V

      G17-10 (EL) - Body ground

      LG - Body ground

      Turn signal switch (LH) signal

      Ignition switch ON, turn signal switch (LH) off

      11 to 14 V

      Ignition switch ON, turn signal switch (LH) on

      Below 1 V

      G17-11 (S) - Body ground*5

      GR - Body ground

      Rear fog indicator light signal

      Ignition switch ON, rear fog indicator light off

      Below 1 V

      Ignition switch ON, rear fog indicator light on

      11 to 14 V

      G17-12 (FOG) - Body ground*5

      Y - Body ground

      Front fog indicator light signal

      Ignition switch ON, front fog indicator light off

      Below 1 V

      Ignition switch ON, front fog indicator light on

      11 to 14 V

      G17-13 (LL) - Body ground

      Y - Body ground

      Turn signal light (LH) signal

      Ignition switch ON, turn signal light (LH) off

      Below 1 V

      Ignition switch ON, turn signal light (LH) on

      11 to 14 V

      • *1: w/ Rear Seat Belt Warning System

      • *2: Engine Type Diesel

      • *3: w/o Stop and Start System

      • *4: w/ Stop and Start System

      • *5: for Segment Display Type

      • *6: except 1AD-FTV

      • *7: w/ Panic Switch

      • *8: w/o Panic Switch

    2. E251775N01

      Using an oscilloscope, check waveform 1.

      Table 1. Waveform 1 (Reference)

      Item

      Condition

      Tester Connection

      G16-5 (SI) - Body ground

      G16-6 (+S) - Body ground

      Tool Setting

      5 V/DIV., 20 ms./DIV.

      Vehicle Condition

      Driving at approximately 20 km/h (12 mph)
      Tip:

      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.