METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    B002HDVN11

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      I10-2 (MSM+) - Body ground L - Body ground Steering pad switch assembly signal Power switch on (IG), enter, top and back switches on steering pad switch assembly not pushed 4.8 to 5.2 V
      Power switch on (IG), enter, top or back switches on steering pad switch assembly pushed Below 1 V
      I10-3 (MSTI) - Body ground B - Body ground Steering pad switch assembly signal Power switch on (IG), up, down, right, and left switches on steering pad switch assembly not pushed 4.8 to 5.2 V
      Power switch on (IG), up, down, right, or left switches on steering pad switch assembly pushed Below 1 V
      I10-4 (ODO) - Body ground G - Body ground ODO/TRIP switch signal Power switch on (IG), ODO/TRIP switch not pushed 4 to 6 V
      Power switch on (IG), ODO/TRIP switch pushed Below 1 V
      I10-5 (EPB) - Body ground R - Body ground Parking brake switch signal Power switch on (IG), parking brake switch is off 11 to 14 V
      Power switch on (IG), parking brake switch is on Below 1.5 V
      I10-6 (P/SB) - Body ground*6 L - Body ground Front passenger seat belt buckle switch signal Power switch on (IG), front passenger side seat occupied, front passenger seat belt unfastened Below 1 V
      Power switch on (IG), front passenger side seat occupied, front passenger seat belt fastened 11 to 14 V
      I10-9 (S) - Body ground LG - Body ground Engine oil pressure switch signal "Low Oil Pressure Stop in a Safe Place See Owner's Manual" is displayed Below 1 V
      "Low Oil Pressure Stop in a Safe Place See Owner's Manual" is not displayed 11 to 14 V
      I10-15 (OILW) - Body ground B - Body ground Ground Always Below 1 Ω
      I10-16 (WLVL) - Body ground*5 LG - Body ground Washer fluid level signal Power switch on (IG), washer fluid level not low 11 to 14 V
      Power switch on (IG), washer fluid level low Below 1 V
      I10-19 (+S) - Body ground V - Body ground Speed signal for other system (Output) Driving at approximately 20 km/h (12 mph) Pulse generation (See waveform 1)
      I10-20 (SI) - Body ground V - Body ground Speed signal for other system (Input) Driving at approximately 20 km/h (12 mph) Pulse generation (See waveform 1)
      I10-21 (IG+) - Body ground B - Body ground Power switch signal Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      I10-22 (B) - Body ground Y - Body ground Battery Power switch off 11 to 14 V
      I10-25 (TR) - Body ground V - Body ground Trip switch signal Power switch on (IG), up switch and down switch of trip switch not pushed 4.6 to 5.3 V
      Power switch on (IG), up switch of trip switch pushed Below 1 V
      Power switch on (IG), down switch of trip switch pushed 2 to 3.6 V
      I10-26 (SW3) - Body ground P - Body ground Trip switch signal Always Below 1 V
      I10-27 (FR) - I10-28 (FE) SB - GR Fuel sender gauge signal Power switch on (IG), fuel level F Below 1 V
      Power switch on (IG), fuel level E 4.5 to 9 V
      I10-29 (CANH) - Body ground G - Body ground CAN communication line - -
      I10-30 (CANL) - Body ground W - Body ground CAN communication line - -
      I10-31 (ES) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I10-32 (TX-) - Body ground*1 R - Body ground Headup display communication signal Power switch on (IG) Pulse generation (See waveform 2)
      I10-33 (CS) - Body ground*1 Y - Body ground Headup display communication signal Power switch on (IG) Pulse generation (See waveform 3)
      I10-38 (INT) - Body ground*2 LG - Body ground Tire pressure warning reset switch Power switch on (IG), tire pressure warning reset switch off 8 to 15 V
      Power switch on (IG), tire pressure warning reset switch on Below 1 V
      I10-39 (ILL-) - Body ground P - Body ground Illumination signal Power switch on (IG), headlight dimmer switch off 11 to 14 V
      Power switch on (IG), headlight dimmer switch in tail or head position Below 1 V
      I10-40 (EP) - Body ground W-B - Body ground Ground Always Below 1 Ω
      I11-1 (B) - Body ground L - Body ground Battery Power switch off 11 to 14 V
      I11-2 (HZSW) - Body ground B - Body ground Hazard warning switch signal Power switch on (IG), hazard warning switch not pressed 11 to 14 V
      Power switch on (IG), hazard warning switch pressed Below 1 V
      I11-3 (ER) - Body ground L - Body ground RH turn indicator light signal (Input) 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
      I11-4 (EL) - Body ground R - Body ground LH turn indicator light signal (Input) 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
      I11-5 (TRNR) - Body ground SB - Body ground RH turn indicator light signal (Output) 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
      I11-7 (LR) - Body ground L - Body ground RH turn indicator light signal (Output) 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
      I11-8 (SW) - Body ground B - Body ground Headlight dimmer switch assembly (full turn) signal Headlight dimmer switch assembly on (full turn) 11 to 14 V
      Headlight dimmer switch assembly off Below 1 V
      I11-9 (MSCL) - Body ground*3 W - Body ground CAN communication line - -
      I11-10 (MSCH) - Body ground*3 R - Body ground CAN communication line - -
      I11-11 (TRNL) - Body ground Y - Body ground LH turn indicator light signal (Output) 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
      I11-12 (HAZM) - Body ground R - Body ground Hazard warning signal switch signal (Output) Power switch on (IG), hazard warning signal switch not pressed Below 1 V
      Power switch on (IG), hazard warning signal switch pressed 11 to 14 V ←→ Below 1 V
      I11-13 (LL) - Body ground Y - Body ground LH turn indicator light signal (Output) 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
      I105-1 (GVIF) - Body ground*4 B - Body ground GVIF communication line - -

      *1: w/ Headup Display

      *2: w/ Tire Pressure Warning System

      *3: w/ Navigation System or Audio and Visual System

      *4: w/ Navigation System or Audio and Visual System (except 8 Speakers)

      *5: w/ Washer Fluid Level Warning System

      *6: w/o Occupant Classification System


      1. B002J7UN02

        Using an oscilloscope, check waveform 1.

        Waveform 1 (Reference)
        Item Condition
        Tester Connection

        • I10-19 (+S) - Body ground

        • I10-20 (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.

      2. B002KRLE03

        Using an oscilloscope, check waveform 2.

        Waveform 2 (Reference)
        Item Condition
        Tester Connection I10-32 (TX-) - Body ground
        Tool Setting 5 V/DIV., 200 μs./DIV.
        Vehicle Condition Power switch on (IG)

        Tech Tips

        The period of the signal changes depending on the communication state.

      3. B002HS5E03

        Using an oscilloscope, check waveform 3.

        Waveform 3 (Reference)
        Item Condition
        Tester Connection I10-33 (CS) - Body ground
        Tool Setting 5 V/DIV., 2 ms./DIV.
        Vehicle Condition Power switch on (IG)

        Tech Tips

        The period of the signal changes depending on the communication state.

  2. COMBINATION METER MIRROR CONTROL ECU (w/ Headup Display)

    B002H8MN02

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      J5-1 (IG) - Body ground B - Body ground Power switch signal Power switch off Below 1 V
      Power switch on (IG) 11 to 14 V
      J5-2 (B) - Body ground G - Body ground Battery Power switch off 11 to 14 V
      J5-4 (ES) - Body ground W-B - Body ground Ground Always Below 1 Ω
      J5-5 (ACC) - Body ground GR - Body ground Power switch signal Power switch off Below 1 V
      Power switch on (ACC) 11 to 14 V
      J5-6 (TX-) - Body ground W - Body ground Headup display communication signal Power switch on (IG) Pulse generation (See waveform 1)
      J5-7 (CS) - Body ground Y - Body ground Headup display communication signal Power switch on (IG) Pulse generation (See waveform 2)
      J5-9 (SW1) - Body ground R - Body ground Headup display switch signal Power switch on (IG), headup display switch (HUD) off 4.7 to 5.5 V
      Power switch on (IG), headup display switch (HUD) on 0 to 0.6 V
      Power switch on (IG), headup display switch (DISP) off 4.7 to 5.5 V
      Power switch on (IG), headup display switch (DISP) on 0.8 to 1.6 V
      J5-10 (SW2) - Body ground L - Body ground Headup display switch signal Power switch on (IG), headup display switch (contrast up) off 4.7 to 5.5 V
      Power switch on (IG), headup display switch (contrast up) on 0.8 to 1.6 V
      Power switch on (IG), headup display switch (contrast down) off 4.7 to 5.5 V
      Power switch on (IG), headup display switch (contrast down) on 0 to 0.6 V
      Power switch on (IG), headup display switch (position up) off 4.7 to 5.5 V
      Power switch on (IG), headup display switch (position up) on 3.1 to 4.1 V
      Power switch on (IG), headup display switch (position down) off 4.7 to 5.5 V
      Power switch on (IG), headup display switch (position down) on 1.8 to 2.7 V
      J5-12 (MPX1) - Body ground L - Body ground Radio receiver assembly communication signal Power switch on (IG) Pulse generation
      J5-13 (MPX2) - Body ground LG - Body ground Radio receiver assembly communication signal Power switch on (IG) Pulse generation
      J5-16 (E) - Body ground B - Body ground Ground (Illumination ground) Always Below 1 Ω

      1. B002KRLE03

        Using an oscilloscope, check waveform 1.

        Waveform 1 (Reference)
        Item Condition
        Tester Connection J5-6 (TX-) - Body ground
        Tool Setting 5 V/DIV., 200 μs./DIV.
        Vehicle Condition Power switch on (IG)

        Tech Tips

        The period of the signal changes depending on the communication state.

      2. B002HS5E03

        Using an oscilloscope, check waveform 2.

        Waveform 2 (Reference)
        Item Condition
        Tester Connection J5-7 (CS) - Body ground
        Tool Setting 5 V/DIV., 2 ms./DIV.
        Vehicle Condition Power switch on (IG)

        Tech Tips

        The period of the signal changes depending on the communication state.