METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    A01LZ42N15

    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
      E46-1 (RLMT)*1 - Body ground G - Body ground Rear seat belt warning light LH output signal Ignition switch ON, rear seat belt warning light LH off 11 to 14 V
      Ignition switch ON, rear seat belt warning light LH on Below 1 V
      E46-2 (RCMT)*1 - Body ground L - Body ground Rear seat belt warning light center output signal Ignition switch ON, rear seat belt warning light center off 11 to 14 V
      Ignition switch ON, rear seat belt warning light center on Below 1 V
      E46-3 (RRMT)*1 - Body ground R - Body ground Rear seat belt warning light RH output signal Ignition switch ON, rear seat belt warning light RH off 11 to 14 V
      Ignition switch ON, rear seat belt warning light RH on Below 1 V
      E46-5 (SI) - Body ground R - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated Pulse generation (See waveform 1)
      E46-6 (+S) - Body ground V - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated Pulse generation (See waveform 1)
      E46-7 (P/SB) - Body ground L - Body ground Front passenger seat belt buckle switch signal Ignition switch ON, front passenger seat occupied, and front passenger seat belt unfastened Below 1 V
      Ignition switch ON, front passenger seat occupied, and front passenger seat belt fastened 11 to 14 V
      E46-8 (S)*2 - Body ground GR - Body ground Fuel sediment warning signal Ignition switch ON, fuel sediment warning light off*16, "DRAIN WATER FROM FUEL FILTER"*15 or "Drain water from fuel filter."*12 not displayed 11 to 14 V
      Ignition switch ON, fuel sediment warning light on*16, "DRAIN WATER FROM FUEL FILTER"*15 or "Drain water from fuel filter."*12 displayed Below 1 V
      E46-9 (S)*3 - Body ground V - Body ground Engine oil pressure signal Engine started 11 to 14 V
      Engine not started Below 1 V
      E46-10 (WLVL)*9 - Body ground SB - 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
      E46-11 (CHK) - Body ground LG - Body ground MIL (Check engine warning light) signal Ignition switch ON, MIL (Check engine warning light) off 11 to 14 V
      Ignition switch ON, MIL (Check engine warning light) on Below 1 V
      E46-12 (SW) - Body ground Y - 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
      E46-13 (CHG-)*4 - Body ground L - Body ground Charge warning signal Ignition switch ON, charge warning light off*16 or "Charge warning (Charge warning symbol)"*15 or "Check charging system."*12 not displayed Below 1 V
      Ignition switch ON, charge warning light on*16, "Charge warning (Charge warning symbol)"*15 or "Check charging system."*12 displayed 11 to 14 V
      E46-14 (-)*11 - Body ground W-B - Body ground Ground Always Below 1 Ω
      E46-16 (L) - E46-15 (E) V - BR Fuel level signal Ignition switch ON, fuel level full Below 1 V
      Ignition switch ON, fuel level low (fuel level warning light on) 4.5 to 9 V
      E46-19 (+)*11 - Body ground R - Body ground High beam signal Ignition switch ON, high beam off Below 1 V
      Ignition switch ON, high beam on 11 to 14 V
      E46-21 (ET) - Body ground BR - Body ground Ground Always Below 1 Ω
      E46-22 (BRQ)*5 - Body ground GR - Body ground Transmission control ECU assembly communication line Always Below 1.44 V
      E46-23 (TX+)*5 - Body ground LG - Body ground Transmission control ECU assembly communication line Ignition switch ON Pulse generation (See waveform 2)
      E46-24 (RLSB)*1 - Body ground Y - Body ground Rear seat belt buckle switch LH signal Ignition switch ON, rear seat belt LH unfastened Below 1 V
      Ignition switch ON, rear seat belt LH fastened 11 to 14 V
      E46-25 (RCSB)*1 - Body ground L - Body ground Rear seat belt buckle switch center signal Ignition switch ON, rear seat belt center unfastened Below 1 V
      Ignition switch ON, rear seat belt center fastened 11 to 14 V
      E46-26 (RRSB)*1 - Body ground R - Body ground Rear seat belt buckle switch RH signal Ignition switch ON, rear seat belt RH unfastened Below 1 V
      Ignition switch ON, rear seat belt RH fastened 11 to 14 V
      E46-27 (OILW)*10 - Body ground SB*17 or G*18 - Body ground Engine oil level signal Ignition switch ON, engine oil level not low 11 to 14 V
      Ignition switch ON, engine oil level low Below 1 V
      E46-28 (SW1)*6, *11 - Body ground R - Body ground Steering pad switch assembly (DISP switch) signal Ignition switch ON, DISP switch not pressed 4 to 5 V
      Ignition switch ON, DISP switch pressed Below 1 V
      E46-28 (SW1)*12 - Body ground R - Body ground Steering pad switch assembly signal Ignition switch ON, enter, back and TRIP switches on steering pad switch assembly not pushed 4.3 to 6 V
      Ignition switch ON, enter switch on steering pad switch assembly pushed Below 0.6 V
      Ignition switch ON, back switch on steering pad switch assembly pushed 2.3 to 3.2 V
      Ignition switch ON, TRIP switch on steering pad switch assembly pushed 1 to 2 V
      E46-29 (TWS2)*7 - Body ground P - Body ground Temperature switch signal Ignition switch ON, engine coolant temperature below 113°C (235°F) Below 1 V
      Ignition switch ON, engine coolant temperature 120°C (248°F) or more 4.9 to 5.1 V
      E46-31 (CANL) - Body ground W - Body ground CAN communication line - -
      E46-32 (CANH) - Body ground LG - Body ground CAN communication line - -
      E46-33 (MSSL)*12 - Body ground W - Body ground Steering pad switch assembly signal Ignition switch ON, up, down, right and left switches on steering pad switch assembly not pushed 4.3 to 6 V
      Ignition switch ON, up switch on steering pad switch assembly pushed 1 to 2 V
      Ignition switch ON, down switch on steering pad switch assembly pushed 2.3 to 3.2 V
      Ignition switch ON, right switch on steering pad switch assembly pushed 3.4 to 4.1 V
      Ignition switch ON, left switch on steering pad switch assembly pushed Below 0.6 V
      E46-35 (TX1+) - E46-34 (TX1-) G - W Ambient temperature sensor signal Ignition switch ON, ambient temperature 25°C (77°F) 1.38 to 1.75 V
      Ignition switch ON, ambient temperature 40°C (104°F) 0.94 to 1.2 V
      E46-36 (MSCH)*12, *13 - Body ground G - Body ground Local bus communication line - -
      E46-37 (MSCL)*12, *13 - Body ground GR - Body ground Local bus communication line - -
      E46-39 (IG+) - Body ground P - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      E46-40 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      E45-1 (B) - Body ground B - Body ground Battery Always 11 to 14 V
      E45-3 (HAZ) - Body ground GR - Body ground Hazard warning switch signal Hazard warning signal switch not pressed 11 to 14 V
      Hazard warning signal switch pressed Below 1 V
      E45-7 (LR) - Body ground L - 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
      E45-9 (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
      E45-10 (EL) - Body ground LG - 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
      E45-11 (S)*11, *14 - Body ground R - Body ground Rear fog indicator light signal Ignition switch ON, rear fog indicator light off Below 1 V
      Ignition switch ON, rear fog indicator light on 11 to 14 V
      E45-12 (FOG)*8, *11 - Body ground G - Body ground Front fog indicator light signal Ignition switch ON, front fog indicator light off Below 1 V
      Ignition switch ON, front fog indicator light on 11 to 14 V
      E45-13 (LL) - Body ground Y - 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

      • *1: w/ Rear Seat Belt Warning

      • *2: for Diesel

      • *3: except 8NR-FTS, Diesel

      • *4: w/o Generator Control ECU Assembly

      • *5: for Multi-mode Manual Transaxle

      • *6: w/ Steering Pad Switch

      • *7: w/ Exhaust Heat Recirculation System

      • *8: w/ Front Fog Light

      • *9: w/ Washer Fluid Level Warning

      • *10: for 8NR-FTS, 1ND-TV

      • *11: except Multi-information Display (Color Type)

      • *12: for Multi-information Display (Color Type)

      • *13: for Radio and Display Type

      • *14: w/ Rear Fog Light

      • *15: for Multi-information Display (Dot LCD Type)

      • *16: for Multi-information Display (Segment LCD Type)

      • *17: for Sedan

      • *18: for Hatchback, Wagon


      1. A01LVH5N01

        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.

      2. A01M08VN02

        Waveform 2 (Reference):

        Item Condition
        Tool setting 2 V/DIV., 500 μs./DIV.
        Vehicle condition Ignition switch ON