METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A01G792E07

    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
      H13-1 (B) - Body ground GR - Body ground Battery Always 11 to 14 V
      H13-3 (SW) - Body ground G - Body ground LH or RH turn signal switch signal (Input) Engine switch on (IG), LH or RH turn signal switch off 11 to 14 V
      Engine switch on (IG), LH or RH turn signal switch on Below 1 V
      H13-5 (HAZM) - Body ground R - Body ground Hazard warning switch signal (Input) Engine switch on (IG), hazard warning switch not pressed Below 1 V
      Engine switch on (IG), hazard warning switch pressed 11 to 14 V
      H13-7 (LL) - Body ground R - Body ground LH turn indicator light signal (Input) Engine switch on (IG), LH turn indicator light off 11 to 14 V
      Engine switch on (IG), LH turn indicator light blinks 11 to 14 V ←→ Below 1 V
      H13-9 (ER) - Body ground P - Body ground RH turn indicator light signal (Output) Engine switch on (IG), RH turn switch off 11 to 14 V
      Engine switch on (IG), RH turn switch on Below 1 V
      H13-10 (EL) - Body ground L - Body ground LH turn indicator light signal (Output) Engine switch on (IG), LH turn switch off 11 to 14 V
      Engine switch on (IG), LH turn switch on Below 1 V
      H13-11 (HZSW) - Body ground LG - Body ground Hazard warning switch signal (Output) Engine switch on (IG), hazard warning switch not pressed 11 to 14 V
      Engine switch on (IG), hazard warning switch pressed Below 1 V
      H13-13 (LR) - Body ground G - Body ground RH turn indicator light signal (Input) Engine switch on (IG), RH turn indicator light off 11 to 14 V
      Engine switch on (IG), RH turn indicator light blinks 11 to 14 V ←→ Below 1 V
      H14-1 (WLVL) - Body ground LG - Body ground Washer fluid level signal Engine switch on (IG), washer fluid level not low 11 to 14 V
      Engine switch on (IG), washer fluid level low Below 1 V
      H14-2 (OILW)*1 - Body ground GR - Body ground Oil level signal Engine switch on (IG), oil level not low 11 to 14 V
      Engine switch on (IG), oil level low Below 1 V
      H14-3 (LVWG)*2 - Body ground B - Body ground Headlight leveling signal Engine switch on (IG), headlight leveling warning light off 11 to 14 V
      Engine switch on (IG), headlight leveling warning light on Below 1 V
      H14-5 (CHK) - Body ground R - Body ground MIL (Check engine warning light) signal Engine switch on (IG), MIL off 11 to 14 V
      Engine switch on (IG), MIL on Below 1 V
      H14-10 (PBKL) - Body ground V - Body ground Front passenger seat belt buckle switch signal Engine switch on (IG), front passenger seat occupied, and front passenger seat belt unfastened Below 1 V
      Engine switch on (IG), front passenger seat occupied, and front passenger seat belt fastened 11 to 14 V
      H14-12 (S) - Body ground B - Body ground Oil pressure signal Engine switch on (IG), oil pressure warning light off 11 to 14 V
      Engine switch on (IG), oil pressure warning light on Below 1 V
      H14-13 (CHG-) - Body ground L - Body ground Charge warning light signal Engine switch on (IG), charge warning light off 11 to 14 V
      Engine switch on (IG), charge warning light on Below 1 V
      H14-14 (SW) - Body ground P - Body ground Brake fluid level signal Engine switch on (IG), brake fluid level not low 11 to 14 V
      Engine switch on (IG), brake fluid level low Below 1 V
      H14-19 (+S) - Body ground V - Body ground Speed signal for other system (Output) Engine switch on (IG), wheel being rotated

      Pulse generation

      (See waveform 1)
      H14-20 (SI) - Body ground W - Body ground Speed signal for other system (Input) Engine switch on (IG), wheel being rotated

      Pulse generation

      (See waveform 1)
      H14-21 (IG+) - Body ground GR - Body ground Engine switch signal Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      H14-22 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      H14-24 (TR) - Body ground LG - Body ground Light control rheostat switch (Trip switch) signal Engine switch on (IG), light control rheostat up or down switch not pressed 4 to 6 V
      Engine switch on (IG), light control rheostat up or down switch pressed Below 1 V
      H14-26 (FR) - H14-27 (FE) GR - P Fuel level signal Engine switch on (IG), fuel level warning off Below 1 V
      Engine switch on (IG), fuel level warning on 4.5 to 9 V
      H14-28 (CANH) - Body ground G - Body ground CAN communication line - -
      H14-29 (CANL) - Body ground W - Body ground CAN communication line - -
      H14-30 (ES) - Body Ground BR - Body ground Ground Always Below 1 Ω
      H14-36 (MSSL) - Body ground B - Body ground DISP switch (Steering pad switch assembly) signal Engine switch on (IG), DISP switch not pressed 4 to 5 V
      Engine switch on (IG), DISP switch pressed Below 1 V
      H14-37 (RSET) - Body ground P - Body ground ODO/TRIP switch (Trip switch) signal Engine switch on (IG), ODO/TRIP switch not pressed 4 to 6 V
      Engine switch on (IG), ODO/TRIP switch pressed Below 1 V
      H14-39 (ILL-) - Body ground GR - Body ground Illumination signal Headlight dimmer switch assembly off Below 1 V
      Headlight dimmer switch assembly tail or head position Pulse generation
      H14-40 (EP) - Body Ground W-B - Body ground Ground Always Below 1 Ω

      • *1: for 2GR-FE

      • *2: w/ Automatic headlight beam level control system

    2. A01G8KWE03

      Waveform 1 (Reference):

      Item Condition
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Wheel being rotated

      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.

  2. ACCESSORY METER ASSEMBLY (w/o Navigation System)

    A01G4K1E01

    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
      H86-1 (ACC) - Body ground Y - Body ground Engine switch signal Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      H86-2 (IG+) - Body ground G - Body ground Engine switch signal Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      H86-4 (B1) - Body ground R - Body ground Battery Always 11 to 14 V
      H86-6 (ADIM) - Body ground Y - Body ground Auto dimmer signal Engine switch on (IG), headlight dimmer switch assembly off Below 1 V
      Engine switch on (IG), headlight dimmer switch assembly in tail, head, or AUTO position at night 4 to 6 V
      H86-7 (CLK2) - H86-14 (CLK4) B - W Brightness switch (Radio receiver assembly) signal Brightness switch not pressed 11 to 14 V
      Brightness switch pressed Below 1 V
      H86-8 (ILL-) - Body ground GR - Body ground Illumination signal Headlight dimmer switch assembly off Below 1 V
      Headlight dimmer switch assembly in tail or head position Pulse generation
      H86-11 (LIN1) - Body ground B - Body ground LIN communication signal Engine switch on (IG) Pulse generation
      H86-13 (TX2-) - Body ground R - Body ground AVC-LAN communication signal Always 11 to 14 V
      H86-15 (TX2+) - Body ground G - Body ground AVC-LAN communication signal Always Below 1 V
      H86-16 (GND) - Body ground W-B - Body ground Ground Always Below 1 Ω