METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A000PG8E02

    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
      N39-1 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      N39-2 (HZSW) - Body ground P - Body ground Hazard warning signal switch signal (Input) Power switch on (IG), hazard warning signal switch not pressed 11 to 14 V
      Power switch on (IG), hazard warning signal switch pressed Below 1 V
      N39-3 (ER) - Body ground B - Body ground RH turn signal 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
      N39-4 (EL) - Body ground L - Body ground LH turn signal 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
      N39-5 (TRNR) - Body ground G - Body ground Rear turn signal light RH signal Power switch on (IG), RH turn indicator light off Below 1 V
      Power switch on (IG), RH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      N39-6 (INT) - Body ground Y - Body ground Tire pressure warning ECU and receiver signal Power switch on (IG) 8 to 15 V
      Power switch on (IG), steering pad switch assembly operated, "TPMS" selected on the multi-information display and "ENTER" switch (steering pad switch assembly) pressed and held Below 1.5 V
      N39-7 (LR) - Body ground G - Body ground Front and side turn signal light RH signal Power switch on (IG), RH turn indicator light off Below 1 V
      Power switch on (IG), RH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      N39-9 (TX-) - Body ground V - Body ground Local Bus communication line - -
      N39-10 (TX+) - Body ground W - Body ground Local Bus communication line - -
      N39-11 (TRNL) - Body ground B - Body ground Rear turn signal light LH signal Power switch on (IG), LH turn signal switch off 11 to 14 V
      Power switch on (IG), LH turn signal switch on 11 to 14 V ←→ Below 1 V
      N39-12 (HAZM) - Body ground SB - Body ground Hazard warning signal switch signal (Output) Power switch on (IG), hazard warning signal switch not pressed 11 to 14 V
      Power switch on (IG), hazard warning signal switch pressed Below 1 V
      N39-13 (LL) - Body ground Y - Body ground Front and side turn signal light LH signal Power switch on (IG), LH turn indicator light off Below 1 V
      Power switch on (IG), LH turn indicator light blinking 11 to 14 V ←→ Below 1 V
      N40-2 (MSM+) - Body ground L - Body ground Steering pad switch assembly signal Power switch on (IG), up, down, right and left switches on steering pad switch assembly not pushed 4.3 to 6 V
      Power switch on (IG), up switch on steering pad switch assembly pushed 1 to 2 V
      Power switch on (IG), down switch on steering pad switch assembly pushed 2.3 to 3.2 V
      Power switch on (IG), right switch on steering pad switch assembly pushed 3.4 to 4.1 V
      Power switch on (IG), left switch on steering pad switch assembly pushed Below 0.6 V
      N40-3 (MSTI) - Body ground V - Body ground Steering pad switch assembly signal Power switch on (IG), enter, back and top switches on steering pad switch assembly not pushed 4.3 to 6 V
      Power switch on (IG), enter switch on steering pad switch assembly pushed Below 0.6 V
      Power switch on (IG), back switch on steering pad switch assembly pushed 2.3 to 3.2 V
      Power switch on (IG), top switch on steering pad switch assembly pushed 1 to 2 V
      N40-4 (RSET) - Body ground G - Body ground ODO/TRIP switch signal ODO/TRIP switch off 11 to 14 V
      ODO/TRIP switch on Below 1 V
      N40-5 (EPB) - Body ground GR - Body ground Parking brake switch signal Power switch on (IG), parking brake switch off 11 to 14 V
      Power switch on (IG), parking brake switch on Below 1.5 V
      N40-6 (PBKL) - Body ground W - Body ground Front passenger side seat belt buckle switch signal Power switch on (IG), front passenger side seat belt fastened 11 to 14 V
      Power switch on (IG), front passenger side seat belt unfastened Below 1 V
      N40-7 (PODS) - Body ground B - Body ground Front passenger seat condition signal Power switch on (IG), sitting on front passenger seat 11 to 14 V
      Power switch on (IG), not sitting on front passenger seat Below 1 V
      N40-9 (S) - Body ground Y - Body ground Engine oil pressure switch signal Power switch on (IG), engine oil pressure warning display off 11 to 14 V
      Power switch on (IG), engine oil pressure warning display on Below 1 V
      N40-15 (OILW) - Body ground B - Body ground Engine oil level sensor signal Power switch on (IG), engine oil level warning display off 11 to 14 V
      Power switch on (IG), engine oil level warning display on Below 1 V
      N40-16 (WLVL) - Body ground GR - Body ground Washer fluid level warning switch signal Power switch on (IG), washer fluid level warning display off 11 to 14 V
      Power switch on (IG), washer fluid level warning display on Below 1 V
      N40-19 (+S) - Body ground SB - Body ground Speed signal for other systems (Output) Driving at approximately 20 km/ h (12 mph) Pulse generation (See waveform 1)
      N40-20 (SI) - Body ground V - Body ground Speed signal for other systems (Input) Driving at approximately 20 km/ h (12 mph) Pulse generation (See waveform 1)
      N40-21 (IG+) - Body ground W - Body ground Power switch signal (IG) Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      N40-22 (B) - Body ground P - Body ground Battery Always 11 to 14 V
      N40-23 (IND) - Body ground*2 B - Body ground Vehicle approaching main switch signal Power switch on (IG), vehicle approaching speaker OFF 4 V or higher
      Power switch on (IG), vehicle approaching speaker ON Below 2.8 V
      N40-25 (TR) - Body ground B - Body ground Light control rheostat signal Light control rheostat up switch off 4.6 to 5.3 V
      Light control rheostat up switch on Below 1 V
      Light control rheostat down switch off 4.6 to 5.3 V
      Light control rheostat down switch on 2 to 3.6 V
      N40-27 (FR) - Body ground BR - Body ground Fuel level signal Fuel level F Below 1 V
      Fuel level E 4.5 to 9 V
      N40-28 (FE) - Body ground L - Body ground Ground (Fuel ground) Always Below 1 Ω
      N40-29 (CANH) - Body ground V - Body ground CAN communication line - -
      N40-30 (CANL) - Body ground W - Body ground CAN communication line - -
      N40-31 (ES) - Body ground W-B - Body ground Ground (Signal ground) Always Below 1 Ω
      N40-39 (ILL-) - Body ground W - Body ground Headlight dimmer switch (TAIL) signal Power switch on (IG), headlight dimmer switch (TAIL) off 11 to 14 V
      Power switch on (IG), headlight dimmer switch (TAIL) on Below 1 V
      N40-40 (EP) - Body ground W-B - Body ground Ground (Illumination ground) Always Below 1 Ω
      N179-1 (GVIF) - Body ground B - Body ground Video signal (Digital) - -

      1. A000PE8E03

        Using an oscilloscope, check waveform 1.

        Waveform 1 (Reference)
        Item Condition
        Tester connection

        N40-19 (+S) - Body ground

        N40-20 (SI) - 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.