METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A01QQ3QN05

    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
      G16-1 (RLMT) - Body ground*10 B - Body ground Rear left seat belt warning indicator signal (Output) Ignition switch ON, Rear left seat belt warning indicator off Below 1 V
      Ignition switch ON, Rear left seat belt warning indicator on 11 to 14 V
      G16-2 (ILL-) - Body ground*12 LG - Body ground Ground Always Below 1 Ω
      G16-2 (RCMT) - Body ground*10*14 G - Body ground Rear center seat belt warning indicator signal (Output) Ignition switch ON, Rear center seat belt warning indicator off Below 1 V
      Ignition switch ON, Rear center seat belt warning indicator on 11 to 14 V
      G16-3 (RRMT) - Body ground*10 L - Body ground Rear right seat belt warning indicator signal (Output) Ignition switch ON, Rear right seat belt warning indicator off Below 1 V
      Ignition switch ON, Rear right seat belt warning indicator on 11 to 14 V
      G16-4 (EP) - Body ground BR - Body ground Ground Always Below 1 Ω
      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 L - Body ground Passenger side seat belt signal Ignition switch ON, Passenger side seat belt buckle switch off or passenger seat occuparent switch off 11 to 14 V
      Ignition switch ON, Passenger side seat belt buckle switch on and passenger seat occuparent switch on Below 1 V
      G16-8 (S) - Body ground*8,*9 R - Body ground Sedimenter warning 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*9 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*15 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*4 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
      G16-17 (TC) - Body ground G - Body ground Tail cancel switch signal Tail cancel switch off 1 MΩ or higher
      Tail cancel switch on Below 1 Ω
      G16-18 (MSTI) - Body ground BE - Body ground Steering pad switch assembly ground*2 Always Below 1 Ω
      Steering pad switch assembly signal*3 Ignition switch ON, Left, Up, Down and Right switches on steering pad switch assembly not pushed 4.8 to 5.2 V
      Ignition switch ON, up, down, right, and left switches on steering pad switch assembly not pushed Below 1 V
      G16-19 (+) - Body ground*5 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
      G16-22 (OILW) - Body ground*2*8 G - Body ground Engine oil level signal Ignition switch ON, Engine oil level not low 11 to 14 V
      Ignition switch ON, Engine oil level low Below 1 V
      G16-22 (MSCL) - Body ground SB - Body ground CAN communication line - -
      G16-23 (MSCH) - Body ground V - Body ground CAN communication line - -
      G16-24 (RLSB) - Body ground*10 G - Body ground Rear left seat belt buckle switch signal Ignition switch ON, Rear left seat belt buckle switch off 11 to 14 V
      Ignition switch ON, Rear right seat belt buckle switch on Below 1 V
      G16-25 (RCSB) - Body ground*10 B - Body ground Rear center seat belt buckle switch signal Ignition switch ON, Rear center seat belt buckle switch off 11 to 14 V
      Ignition switch ON, Rear center seat belt buckle switch on Below 1 V
      G16-26 (RRSB) - Body ground*10 W - Body ground Rear right seat belt buckle switch signal Ignition switch ON, Rear right seat belt buckle switch off 11 to 14 V
      Ignition switch ON, Rear right seat belt buckle switch on Below 1 V
      G16-27 (OILW) - Body ground*3*8 G - Body ground Engine oil level signal Ignition switch ON, Engine oil level not low 11 to 14 V
      Ignition switch ON, Engine oil level low Below 1 V
      G16-28 (MSM+) - Body ground*3 L - Body ground Steering pad switch assembly signal Ignition switch ON, Enter, Trip and Back switches on steering pad switch assembly not pushed 4.8 to 5.2 V
      Ignition switch ON, Enter, Trip and Back switches on steering pad switch assembly pushed 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
      G16-31 (CANL) - Body ground W - Body ground CAN communication line - -
      G16-32 (CANH) - Body ground G - Body ground CAN communication line - -
      G16-33 (SW3) - Body ground P - Body ground Ground Always Below 1 Ω
      G16-34 (TX1-) - Body ground W - Body ground Thermistor signal ground Always Below 1 V
      G16-35 (TX1+) - Body ground G - Body ground Thermistor signal Ignition switch ON 4.4 to 5.6 V
      G16-36 (SW2) - Body ground GR - Body ground Light control rheostat signal Ignition switch ON, light control rheostat position (min.) Below 1 V
      Ignition switch ON, light control rheostat position (max.) 4 to 6 V
      G16-37 (SW1) - Body ground V - Body ground Light control rheostat signal Always 4 to 6 V
      G16-39 (IG+) - Body ground

      B - Body ground*6

      P - Body ground*7

      		 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*10 LG - Body ground Automatic High Beam indicator light Ignition switch ON, Headlight beam level control system indicator light off 11 to 14 V
      Ignition switch ON, Headlight beam level control system indicator 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*11 GR - Body ground Rear fog light Ignition switch ON, turn rear fog light off Below 1 V
      Ignition switch ON, turn rear fog light on 11 to 14 V
      G17-12 (FOG) - Body ground*1 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/ Front Fog Light

      • *2: for Segment Display Type

      • *3: for TFT Display Type

      • *4: for 4WD/AWD

      • *5: for Halogen Head Light

      • *6: w/o Stop and Start System

      • *7: w/ Stop and Start System

      • *8: for 2AD-FTV, 2AD-FHV

      • *9: for 2WW

      • *10: w/ Rear Seat Belt Warning

      • *11: w/ Rear Fog Light

      • *12: w/o Canister Pump Module

      • *13: w/ Automatic Headlight Beam Level Control System

      • *14: w/ Canister Pump Module

      • *15: w/ Wahser Fluid Warning System

    2. A01QQ1LN01

      Using an oscilloscope, check waveform 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)

      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.