METER / GAUGE SYSTEM TERMINALS OF ECU


  1. CHECK COMBINATION METER

    A01ERIQE01

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      E77-1 (R/O) - Body ground P - Body ground RSCA OFF indicator light input signal Engine switch on (IG), RSCA OFF indicator light on Below 1 V
      Engine switch on (IG), RSCA OFF indicator light off 8 to 14 V
      E77-2 (CHG-) - Body ground B - Body ground CHARGE warning light Engine switch on (IG), CHARGE warning light on Below 1 V
      Engine switch on (IG), CHARGE warning light off 11 to 14 V
      E77-4 (LP) - Body ground V - Body ground SECURITY warning light Security warning light off Below 1 V
      Security warning light blinks Alternating between below 1 V and 11 to 14 V
      E77-5 (SI) - Body ground V - Body ground Speed signal (input) Engine switch on (IG), wheel turned slowly Pulse generation
      E77-6 (+S) - Body ground V - Body ground Speed signal (output) Engine switch on (IG), wheel turned slowly Pulse generation
      E77-8 (B) - Body ground L - Body ground Turn signal L Engine switch on (IG), turn signal switch neutral position Below 1 V
      Engine switch on (IG), turn signal switch turned to right Alternating between below 1 V and 11 to 14 V
      E77-10 (B) - Body ground R - Body ground Turn signal R Engine switch on (IG), turn signal switch neutral position Below 1 V
      Engine switch on (IG), turn signal switch turned to left Alternating between below 1 V and 11 to 14 V
      E77-12 (FE) - Body ground*1 SB - Body ground Fuel sender gauge ground Always Below 1 Ω
      E77-13 (L) - Body ground*1 P - Body ground Fuel sender gauge signal Fuel F (full tank) → E (empty) 4.5 to 9 V
      E77-14 (E) - Body ground B - Body ground Fuel sender gauge ground Always Below 1 Ω
      E77-15 (L) - Body ground G - Body ground Fuel sender gauge signal Fuel F (full tank) → E (empty) 4.5 to 9 V
      E77-16 (ILL-) - Body ground W - Body ground Light control rheostat signal (for bulb) Light control rheostat knob fully turned left Below 1 V
      Light control rheostat knob fully turned from left to right Resistance increases when turned to right
      E77-17 (ILL-) - Body ground W - Body ground Light control rheostat signal (for LED) Light control rheostat knob fully turned left Below 1 V
      Light control rheostat knob fully turned from left to right Resistance increases when turned to right
      E77-18 (CHK) - Body ground R - Body ground MIL input signal Engine switch on (IG), MIL on Below 3 V
      Engine switch on (IG), MIL off 11 to 14 V
      E77-20 (EP) - Body ground W-B - Body ground Ground Always Below 1 V
      E77-21 (B) - Body ground R - Body ground Power source Always 11 to 14 V
      E77-22 (SIS) - Body ground GR - Body ground Ground Always Below 1 V
      E77-23 (OIL) - Body ground L - Body ground Oil level signal Oil level sensor on Below 1 V
      Oil level sensor off 11 to 14 V
      E77-24 (FLDS) - Body ground B - Body ground 3rd seat information signal 3rd Seat displayed Below 1 V
      3rd Seat not displayed 11 to 14 V
      E77-25 (MSSL) - Body ground L - Body ground Spiral cable signal Engine switch on (IG), steering pad switch signal DISP off Below 1 V
      Engine switch on (IG), steering pad switch signal DISP on 11 to 14 V
      E77-26 (ET) - Body ground BR - Body ground Ground Always Below 1 V
      E77-27 (RSET) - Body ground B - Body ground Light control rheostat signal Engine switch on (IG), light control rheostat ODO/TRIP switch off Below 1 V
      Engine switch on (IG), light control rheostat ODO/TRIP switch on 11 to 14 V
      E77-28 (WLVL) - Body ground V - Body ground Washer level warning signal Washer fluid level sensor on Below 1 V
      Washer fluid level sensor off 11 to 14 V
      E77-29 (P/SB) - Body ground

      B - Body ground*2

      G - Body ground*3

      		 Seat belt condition signal (Passenger side) Passenger seat belt indicator off Below 1 V
      Passenger seat belt indicator blinks Alternating between below 1 V and 11 to 14 V
      E77-30 (IG+) - Body ground B - Body ground Engine switch signal Engine switch off Below 1 V
      Engine switch on (IG) 11 to 14 V
      E77-31 (TC) - Body ground B - Body ground Light control rheostat signal Engine switch on (IG), light control rheostat TAIL cancel switch off Below 1 V
      Engine switch on (IG), light control rheostat TAIL cancel switch on 10 kΩ or higher
      E77-32 (ILL+) - Body ground G - Body ground Light control rheostat signal Engine switch on (IG) 4.6 to 5.4 V
      E77-33 (TR) - Body ground W - Body ground Light control rheostat knob input Light control rheostat knob fully turned left Below 1 V
      Light control rheostat knob fully turned right 10 kΩ or higher
      E77-34 (E2) - Body ground L - Body ground Light control rheostat ground Always Below 1 V
      E77-39 (WRNP) - Body ground LG - Body ground

      Seat belt condition signal

      (Passenger side)

      		 Passenger seat belt indicator off Below 1 V
      Passenger seat belt indicator blinks Alternating between below 1 V and 11 to 14 V
      E77-40 (S) - Body ground L - Body ground Oil pressure receiver gauge signal Engine switch on (IG), Oil pressure receiver gauge H Below 1 V
      Engine switch on (IG), Oil pressure receiver gauge L 11 to 14 V

      • *1: for Double Tank Type

      • *2: for LHD

      • *3: for RHD


      • If the result is not as specified, the meter may have a malfunction.

  2. CHECK COMBINATION METER INNER CIRCUIT

    A01ERW8E01
    A01EPN1E01
    A01EPDAE01
    A01ENLSE01