METER / GAUGE SYSTEM TERMINALS OF ECU

  1. COMBINATION METER ASSEMBLY

    E238019N15

    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 or "Drain water from fuel filter."*12 not displayed

      11 to 14 V

      Ignition switch ON, fuel sediment warning light on*16 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 "Check charging system."*12 not displayed

      Below 1 V

      Ignition switch ON, charge warning light on*16 or "Check charging system."*12 displayed

      11 to 14 V

      E46-14 (-)*16 - 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 (+)*16 - 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 left seat belt buckle switch 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 center seat belt buckle switch 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 right seat belt buckle switch 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*11 or G*15 - 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, *16 - 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

      4.6 to 5.2 V

      Ignition switch ON, enter switch on steering pad switch assembly pushed

      Below 0.8 V

      Ignition switch ON, back switch on steering pad switch assembly pushed

      2.5 to 3.4 V

      Ignition switch ON, TRIP switch on steering pad switch assembly pushed

      1 to 2.2 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

      4.6 to 5.2 V

      Ignition switch ON, up switch on steering pad switch assembly pushed

      1 to 2.2 V

      Ignition switch ON, down switch on steering pad switch assembly pushed

      2.5 to 3.4 V

      Ignition switch ON, right switch on steering pad switch assembly pushed

      3.7 to 4.4 V

      Ignition switch ON, left switch on steering pad switch assembly pushed

      Below 0.8 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 signal 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)*14, *16 - 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, *16 - 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: for Sedan

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

      • *13: for Radio and Display Type

      • *14: w/ Rear Fog Light

      • *15: for Hatchback, Wagon

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

      1. E267248N01

        Waveform 1 (Reference):

        Item

        Condition

        Tool setting

        5 V/DIV., 20 ms./DIV.

        Vehicle condition

        Ignition switch ON, wheel being rotated
        Tip:

        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. D105744N02

        Waveform 2 (Reference):

        Item

        Condition

        Tool setting

        2 V/DIV., 500 μs./DIV.

        Vehicle condition

        Ignition switch ON