METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    B0027UAN02

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      G9-1 (+) - Body ground L - Body ground High beam indicator light signal High beam indicator light on 11 to 14 V
      High beam indicator light off Below 1 V
      G9-2 (HEAD) - Body ground*9 R - Body ground Headlight signal Headlight dimmer switch (light control switch) in head position 11 to 14 V
      Headlight dimmer switch (light control switch) not in head position Below 1 V
      G9-3 (R) - Body ground*19 B - Body ground Back-up light switch signal Ignition switch ON, shift lever in R 11 to 14 V
      Ignition switch ON, shift lever any position other than in R Below 1 V
      G9-4 (ACAN) - Body ground W - Body ground Dimming signal for other system (Output) Ignition switch ON, automatic light control sensor not covered by hand, and light control switch in auto position 11 to 14 V
      Ignition switch ON, automatic light control sensor not covered by hand, and light control switch in auto position Below 1 V
      G9-5 (E1) - Body ground*10 BR - Body ground Ground Always Below 1 Ω
      G9-6 (E2) - Body ground*1 BR - Body ground Ground Always Below 1 Ω
      G9-7 (E3) - Body ground*2 BR - Body ground Ground Always Below 1 Ω
      G9-8 (CHG-) - Body ground*3,*21 GR - Body ground Charger system warning light signal Ignition switch ON, charger system warning light off 11 to 14 V
      Ignition switch ON, charger system warning light on Below 1 V
      G9-9 (VCM) - Body ground*4 Y - Body ground Vacuum warning switch signal Ignition switch ON, engine idle speed Pulse generation
      G9-10 (PKBI) - Body ground V - Body ground Parking brake switch signal Parking brake lever released 11 to 14 V
      Parking brake lever pulled Below 1 V
      G9-11 (KSW) - Body ground*5 G - Body ground Unlock warning switch signal No key in ignition key cylinder 11 to 14 V
      Key in ignition key cylinder Below 1 V
      G9-12 (FFTR) - Body ground*3,*21 W - Body ground Fuel system warning light signal Ignition switch ON, fuel system warning light off 11 to 14 V
      Ignition switch ON, fuel system warning light on Below 1 V
      G9-13 (S) - Body ground*4 G - Body ground Level warning switch signal Ignition switch ON, fuel system warning light off 11 to 14 V
      Ignition switch ON, fuel system warning light on Below 1 V
      G9-14 (OIL) - Body ground*6 R - Body ground Engine oil level signal Ignition switch ON, engine oil level low 11 to 14 V
      Ignition switch ON, engine oil level not low Below 1 V
      G9-14 (OIL) - Body ground*20 BR - Body ground Ground Always Below 1 Ω
      G9-15 (S) - Body ground GR - Body ground Engine oil pressure switch signal Ignition switch ON, low engine oil level warning light off 11 to 14 V
      Ignition switch ON, low engine oil level warning light on Below 1 V
      G9-16 (SW) - Body ground V - Body ground Brake warning light signal Ignition switch ON, brake warning light off 11 to 14 V
      Ignition switch ON, brake warning light on Below 1 V
      G9-17 (WLVL) - Body ground*7 R - Body ground Washer fluid level signal Ignition switch ON, washer fluid level not low 11 to 14 V
      Ignition switch ON, washer fluid level low Below 1 V
      G9-18 (SI) - Body ground Y - Body ground Speed signal for other system (Input) Driving at approximately 20 km/h (12 mph) Pulse generation (See waveform)
      G9-19 (+S) - Body ground V - Body ground Speed signal for other system (Output) Driving at approximately 20 km/h (12 mph) Pulse generation (See waveform)
      G9-20 (ACAN) - Body ground*8 W - Body ground Dimming signal for other system (Input) Ignition switch ON, automatic light control sensor not covered by hand, and light control switch in auto position 11 to 14 V
      Ignition switch ON, automatic light control sensor not covered by hand, and light control switch in auto position Below 1 V
      G9-20 (ACAN) - Body ground*9 L - Body ground Dimming signal for other system (Input) Ignition switch ON, headlight dimmer switch in tail or head 11 to 14 V
      Ignition switch ON, headlight dimmer switch off Below 1 V
      G9-21 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      G9-22 (IG+) - Body ground Y - Body ground Ignition switch signal Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      G9-24 (FV) - Body ground GR - Body ground Fuel sender gauge power source signal Ignition switch ON 4.5 to 5.2 V
      G9-25 (FR) - Body ground V - Body ground Fuel sender gauge signal Ignition switch ON, fuel level F 4.2 to 4.3 V
      Ignition switch ON, fuel level E 0.63 to 0.75 V
      G9-26 (FB&B) - Body ground SB - Body ground Fuel sender gauge ground signal Always Below 1 V
      G9-27 (EP) - Body ground W-B - Body ground Ground Always Below 1 Ω
      G9-30 (+DP) - Body ground*11 P - Body ground Steering pad switch signal Ignition switch ON, DISP switch on steering pad switch not pushed 11 to 14 V
      Ignition switch ON, DISP switch on steering pad switch pushed Below 1 V
      G9-30 (+DP) - Body ground*12 P - Body ground Steering pad switch signal Ignition switch ON, enter, top and back switches on steering pad switch not pushed 4.3 to 5.2 V
      Ignition switch ON, enter switch on steering pad switch pushed Below 0.6 V
      Ignition switch ON, top switch on steering pad switch pushed 1.0 to 2.2 V
      Ignition switch ON, back switch on steering pad switch pushed 2.3 to 3.4 V
      G9-31 (+DP2) - Body ground*12 LG - Body ground Steering pad switch signal Ignition switch ON, up, down, right and left switches on steering pad switch assembly not pushed 4.3 to 5.2 V
      Ignition switch ON, left switch on steering pad switch pushed Below 0.6 V
      Ignition switch ON, up switch on steering pad switch pushed 1.0 to 2.2 V
      Ignition switch ON, down switch on steering pad switch pushed 2.3 to 3.4 V
      Ignition switch ON, right switch on steering pad switch pushed 3.4 to 4.5 V
      G9-33 (TX1+) - G9-34 (TX1-) SB - G Ambient temperature sensor signal Ambient temperature 25°C (77°F) 1615 to 1785 Ω
      G9-35 (CANL) - Body ground W - Body ground CAN communication line - -
      G9-36 (CANH) - Body ground SB - Body ground CAN communication line - -
      G9-37 (LCL-) - Body ground*14, *15 W - Body ground CAN communication line - -
      G9-38 (LCL+) - Body ground*14, *15 B - Body ground CAN communication line - -
      G9-39 (ACC) - Body ground GR - Body ground Ignition switch signal Ignition switch ACC 11 to 14 V
      Ignition switch off Below 1 V
      G9-40 (TAIL) - Body ground P - Body ground Taillight signal Ignition switch ON, headlight dimmer switch in tail or head 11 to 14 V
      Ignition switch ON, headlight dimmer switch off Below 1 V
      G10-1 (FOG) - Body ground*16 P - Body ground Front fog light signal Ignition switch ON, front fog light switch on 11 to 14 V
      Ignition switch ON, front fog light switch off Below 1 V
      G10-3 (BKL) - Body ground LG - Body ground Driver side seat belt buckle switch signal Ignition switch ON, driver side seat belt fastened 11 to 14 V
      Ignition switch ON, driver side seat belt unfastened Below 1 V
      G10-4 (P/SB) - Body ground W - Body ground Front passenger side seat belt buckle switch signal Ignition switch ON, front passenger side seat belt fastened and front passenger seat occupied 11 to 14 V
      Ignition switch ON, front passenger side seat belt unfastened and front passenger seat occupied Below 1 V
      G10-12 (DOOR) - Body ground*8 Y - Body ground Door courtesy switch signal All doors closed except driver door 11 to 14 V
      Any door open except driver door Below 1 V
      G10-13 (S) - Body ground*17 L - Body ground Rear fog light signal Ignition switch ON, rear fog light switch on 11 to 14 V
      Ignition switch ON, rear fog light switch off Below 1 V
      G10-14 (MS5) - Body ground*13 SB - Body ground Speedometer sensor power source signal Ignition switch ON 11 to 14 V
      Ignition switch off Below 1 V
      G10-15 (DCTY) - Body ground B - Body ground Driver side door condition signal Driver side door closed 11 to 14 V
      Driver side door open Below 1 V
      G10-16 (PCTY) - Body ground G - Body ground Front passenger side door condition signal Front passenger side door closed 11 to 14 V
      Front passenger side door open Below 1 V
      G10-17 (RLCY) - Body ground*18 V - Body ground Rear door LH condition signal Rear door LH closed 11 to 14 V
      Rear door LH open Below 1 V
      G10-18 (RRCY) - Body ground*18 L - Body ground Rear door RH condition signal Rear door RH closed 11 to 14 V
      Rear door RH open Below 1 V
      G10-20 (GND) - Body ground*12 W-B - Body ground Ground Always Below 1 Ω
      G10-21 (ILL-) - Body ground*12 W-B - Body ground Illumination signal Ignition switch ON, headlight dimmer switch in tail or head 11 to 14 V
      Ignition switch ON, headlight dimmer switch off Below 1 V
      G11-2 (HAZ) - Body ground SB - Body ground Hazard warning signal switch signal (Output) Hazard warning signal switch off 11 to 14 V
      Hazard warning signal switch on Below 1 V
      G11-3 (SW) - Body ground R - Body ground Turn signal switch (full turn) signal Headlight dimmer switch off 11 to 14 V
      Headlight dimmer switch on (full turn) Below 1 V
      G11-4 (ER) - Body ground P - Body ground RH turn indicator light signal (Input) Ignition switch ON, RH turn signal switch off 11 to 14 V
      Ignition switch ON, RH turn signal switch on Below 1 V
      G11-5 (EL) - Body ground BE - Body ground LH turn indicator light signal (Input) Ignition switch ON, LH turn signal switch off 11 to 14 V
      Ignition switch ON, LH turn signal switch on Below 1 V
      G11-7 (B) - Body ground L - Body ground Battery Always 11 to 14 V
      G11-8 (LL) - Body ground Y - Body ground LH turn indicator light signal (Output) Ignition switch ON, LH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      Ignition switch ON, LH turn indicator light off Below 1 V
      G11-13 (LR) - Body ground SB - Body ground RH turn indicator light signal (Output) Ignition switch ON, RH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      Ignition switch ON, RH turn indicator light off Below 1 V

      *1: for Smart Cab

      *2: for Single Cab

      *3: for 1KD-FTV, 2KD-FTV

      *4: for Diesel Engine

      *5: w/o Entry and Start System

      *6: for 1GD-FTV, 2GD-FTV

      *7: w/ Washer Fluid Level Warning System

      *8: w/ Body ECU

      *9: w/o Body ECU

      *10: for LHD

      *11: for Dot Display Type

      *12: for TFT Display Type

      *13: w/o ABS

      *14: w/ Navigation System

      *15: w/ Audio and Visual System (for Radio and Display Type)

      *16: w/ Front Fog Light

      *17: w/ Rear Fog Light

      *18: except Single Cab

      *19: for Manual Transmission

      *20: for 1TR-FE, 2TR-FE

      *21: for 5L-E


      1. B0024ZJN05

        Using an oscilloscope, check waveform.

        Waveform (Reference)
        Item Condition
        Tester Connection

        • G9-18 (SI) - Body ground

        • G9-19 (+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.