METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A01I1GYE02

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

      w/o Multi-information Display
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I18-1 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      I18-4 (ILL-) - Body ground SB - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      I18-6 (EP) - Body Ground W-B - Body ground Ground Always Below 1 Ω
      I18-7 (ES) - Body Ground BR - Body ground Ground Always Below 1 Ω
      I18-8 (SI) - Body ground P - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-9 (+S) - Body ground V - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-10 (SW) - Body ground G - Body ground Turn signal switch signal Ignition switch ON, LH and RH turn signal switch off 11 to 14 V
      Ignition switch ON, LH or RH turn signal switch on Below 1 V
      I18-11 (S) - Body ground B - Body ground Oil pressure signal Engine started 11 to 14 V
      Engine not started Below 1 V
      I18-13 (IG+) - Body ground L - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      I18-15 (CANL) - Body ground W - Body ground CAN communication line - -
      I18-16 (CANH) - Body ground R - Body ground CAN communication line - -
      I18-17 (FE) - I18-18 (FR) V - GR Fuel level signal Ignition switch ON, fuel level low (fuel level warning light on) 4.5 to 9 V
      Ignition switch ON, fuel level full Below 1 V
      I18-19 (SW) - Body ground B - Body ground Brake fluid level signal Ignition switch ON, brake fluid level not low (brake warning light off) 11 to 14 V
      Ignition switch ON, brake fluid level low (brake warning light on) Below 1 V
      I18-21 (CHG-) - Body ground SB - Body ground Charge warning signal Ignition switch ON, charge warning light off 11 to 14 V
      Ignition switch ON, charge warning light on Below 1 V
      I18-22 (CHK) - Body ground R - Body ground MIL (Check engine warning light) signal Ignition switch ON, MIL off 11 to 14 V
      Ignition switch ON, MIL on Below 1 V
      I18-24 (WLVL) - Body ground LG - 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
      I17-1 (B) - Body ground R - Body ground Battery Always 11 to 14 V
      I17-3 (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
      I17-4 (EL) - Body ground L - 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
      I17-5 (HAZ) - Body ground W - Body ground Hazard warning switch signal Ignition switch ON, hazard warning signal switch not pressed 11 to 14 V
      Ignition switch ON, hazard warning signal switch pressed Below 1 V
      I17-7 (LL) - Body ground R - Body ground LH turn indicator light signal (Output) Ignition switch ON, LH turn indicator light off Below 1 V
      Ignition switch ON, LH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      I17-13 (LR) - Body ground G - Body ground RH turn indicator light signal (Output) Ignition switch ON, RH turn indicator light off Below 1 V
      Ignition switch ON, RH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      w/ Multi-information Display
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I18-1 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      I18-3 (+S) - Body ground V - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-4 (SI) - Body ground P - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated

      Pulse generation

      (See waveform 1)
      I18-8 (S) - Body ground B - Body ground Oil pressure signal Engine started 11 to 15 V
      Engine not started Below 1 V
      I18-9 (SW) - Body ground B - Body ground Brake fluid level signal Ignition switch ON, brake fluid level not low (brake warning light off) 11 to 14 V
      Ignition switch ON, brake fluid level low (brake warning light on) Below 1 V
      I18-11 (EP) - Body Ground W-B - Body ground Ground Always Below 1 Ω
      I18-12 (ILL-) - Body ground SB - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      I18-13 (IG+) - Body ground L - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      I18-14 (FR) - 18-15 (FE) GR - V Fuel level signal Ignition switch ON, fuel level low (fuel level warning light on) 4.5 to 9 V
      Ignition switch ON, fuel level full Below 1 V
      I18-16 (CANL) - Body ground W - Body ground CAN communication line - -
      I18-17 (CANH) - Body ground R - Body ground CAN communication line - -
      I18-18 (MSCH) - Body ground GR - Body ground Local bus communication line - -
      I18-19 (MSCL) - Body ground W - Body ground Local bus communication line - -
      I18-20 (ES) - Body Ground BR - Body ground Ground Always Below 1 Ω
      I18-21 (MSSL) - Body ground P - Body ground Ground Always Below 1 Ω
      I18-22 (MSTI) - Body ground V - Body ground Steering pad switch assembly signal Ignition switch ON, up, down, back and page switches on steering pad switch assembly not pushed 4 to 6 V
      Ignition switch ON, up, down, back or page switch on steering pad switch assembly pushed Below 1 V
      I18-23 (MSM+) - Body ground L - Body ground Steering pad switch assembly signal Ignition switch ON, enter switch on steering pad switch assembly not pushed 4 to 6 V
      Ignition switch ON, enter switch on steering pad switch assembly pushed Below 1 V
      I18-24 (WLVL) - Body ground LG - 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
      I17-1 (B) - Body ground R - Body ground Battery Always 11 to 14 V
      I17-4 (CHG-) - Body ground SB - Body ground Charge warning light signal Ignition switch ON, "Charge warning (Charge warning symbol)" not displayed 11 to 14 V
      Ignition switch ON, "Charge warning (Charge warning symbol)" displayed Below 1 V
      I17-5 (HAZ) - Body ground W - Body ground Hazard warning switch signal Ignition switch ON, hazard warning signal switch not pressed 11 to 14 V
      Ignition switch ON, hazard warning signal switch pressed Below 1 V
      I17-7 (LL) - Body ground R - Body ground LH turn indicator light signal (Output) Ignition switch ON, LH turn indicator light off Below 1 V
      Ignition switch ON, LH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      I17-8 (SW) - Body ground G - Body ground Turn signal switch signal Ignition switch ON, LH and RH turn signal switch off 11 to 14 V
      Ignition switch ON, LH or RH turn signal switch on Below 1 V
      I17-9 (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
      I17-10 (EL) - Body ground L - 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
      I17-11 (LVWG)* - Body ground P - Body ground Headlight leveling signal Ignition switch ON, "Check Headlight Leveling System" not displayed 11 to 14 V
      Ignition switch ON, "Check Headlight Leveling System" displayed Below 1 V
      I17-12 (CHK) - Body ground R - Body ground MIL (Check engine warning light) signal Ignition switch ON, MIL off 11 to 14 V
      Ignition switch ON, MIL on Below 1 V
      I17-13 (LR) - Body ground G - Body ground RH turn indicator light signal (Output) Ignition switch ON, RH turn indicator light off Below 1 V
      Ignition switch ON, RH turn indicator light blinking 11 to 14 V ←→ Below 1 V

      • *: w/ Automatic Headlight Beam Level Control System

    2. A01I0MJE16

      Waveform 1 (Reference):

      Item Condition
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Ignition switch ON, 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.