METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A01HST6E02

    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
      I18-1 (B) - Body ground W - Body ground Auxiliary battery Power switch off 11 to 14 V
      I18-4 (ILL-)- Body ground SB - Body ground Illumination signal Light control switch off Below 1 V
      Light control switch on 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) Power switch on (IG), wheel being rotated

      Pulse generation

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

      Pulse generation

      (See waveform 1)
      I18-10 (SW) - Body ground G - Body ground Turn switch signal Power switch on (IG), turn LH and RH switch off 11 to 14 V
      Power switch on (IG), turn LH or RH switch on Below 1 V
      I18-11 (S) - Body ground B - Body ground Oil pressure signal Power switch on (IG), oil pressure warning light off 9 to 15 V
      Power switch on (IG), oil pressure warning light on Below 1 V
      I18-12 (LVWG)*1 - Body ground P - Body ground Headlight leveling signal Power switch on (IG), headlight leveling indicator light off 11 to 14 V
      Power switch on (IG), headlight leveling indicator light on Below 1 V
      I18-13 (IG+) - Body ground L - Body ground Power switch signal Power switch off Below 1 V
      Power switch on (IG) 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 signal Power switch on (IG), fuel level not low 4 to 14 V
      Power switch on (IG), fuel level low 4 V or less
      I18-22 (CHK) - Body ground R - Body ground MIL (Check engine warning light) signal Power switch on (IG), MIL off 11 to 14 V
      Power switch on (IG), MIL on Below 1 V
      I18-23 (MSSL) - Body ground L - Body ground Steering pad switch assembly (DISP switch) signal Power switch on (IG), DISP switch not pressed 4 to 5 V
      Power switch on (IG), DISP switch pressed Below 1 V
      I18-24 (WLVL) - Body ground LG - Body ground Washer fluid level signal Power switch on (IG), washer fluid level warning light off 11 to 14 V
      Power switch on (IG), washer fluid level warning light on Below 1 V
      I17-1 (B) - Body ground R - Body ground Auxiliary battery Power switch off 11 to 16 V
      I17-3 (ER) - Body ground P - Body ground RH turn switch signal Power switch on (IG), RH turn signal switch off 11 to 14 V
      Power switch on (IG), RH turn signal switch on Below 1 V
      I17-4 (EL) - Body ground L - Body ground LH turn switch signal Power switch on (IG), LH turn signal switch off 11 to 14 V
      Power switch on (IG), LH turn signal switch on Below 1 V
      I17-5 (HAZ) - Body ground W - Body ground Hazard warning switch signal Power switch on (IG), hazard warning switch off 11 to 14 V
      Power switch on (IG), hazard warning switch on Below 1 V
      I17-7 (LL) - Body ground R - Body ground LH turn indicator light signal Turn LH indicator light off 11 to 14 V
      Turn LH indicator light blinks 11 to 14 V ←→ Below 1 V
      I17-13 (LR) - Body ground G - Body ground RH turn indicator light signal Turn RH indicator light off 11 to 14 V
      Turn RH indicator light blinks 11 to 14 V ←→ Below 1 V

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

    2. A01HVFPE03

      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. CLOCK ASSEMBLY

    A01HVM1E01

    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
      I59-1 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I59-5 (ILL+) - Body ground V - Body ground Illumination signal Light control switch off Below 1 V
      Light control switch TAIL or HEAD 11 to 14 V
      I59-6 (ACC) - Body ground P - Body ground Power switch signal Power switch off Below 1 V
      Power switch on (ACC) 11 to 14 V
      I59-7 (B) - Body ground LG - Body ground Auxiliary battery Power switch off 11 to 14 V

  3. COMBINATION METER ASSEMBLY INNER CIRCUIT

    A01HUG2E03
    A01HU2LE02
    A01HU8DE02