METER / GAUGE SYSTEM TERMINALS OF ECU


  1. COMBINATION METER ASSEMBLY

    B004046N34

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

      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      F21-1 (B) - Body ground G - Body ground Battery Always 11 to 14 V
      F21-2 (RCMT) - Body ground*1 V - Body ground Rear center seat belt warning 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
      F21-3 (RRMT) - Body ground*1 G - Body ground Rear right seat belt warning 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
      F21-4 (CHG-) - Body ground*3 G - Body ground Charge warning light signal Engine running, charge warning light off 11 to 14 V
      Engine running, charge warning light on Below 1 V
      F21-5 (HAZ) - Body ground P - Body ground Hazard warning signal switch signal Ignition switch ON, hazard warning signal switch not pressed 11 to 14 V
      Ignition switch ON, hazard warning signal switch pressed Below 1 V
      F21-6 (RLMT) - Body ground*1 GR - Body ground Rear left seat belt warning 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
      F21-7 (LL) - Body ground L - 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
      F21-8 (SW) - Body ground B - Body ground Turn switch signal Ignition switch ON, LH and RH turn signal switch off 11 to 14 V
      Ignition switch ON, LH or RH turn signal switch on Below 1 V
      F21-9 (ER) - Body ground V - 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
      F21-10 (EL) - Body ground R - 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
      F21-12 (VCM) - Body ground*2 L - Body ground Vacuum warning switch signal Engine started, vacuum warning switch off (brake warning light / red (malfunction) off) 11 to 14 V
      Engine started, vacuum warning switch on (brake warning light / red (malfunction) on) Below 1 V
      F21-13 (LR) - Body ground R - 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
      F126-1 (B) - Body ground P - Body ground Battery Always 11 to 14 V
      F126-3 (FV) - Body ground*2 B - Body ground Fuel sender gauge (Power source) Ignition switch ON 4.5 to 5.5 V
      F126-4 (FR) - F126-23 (FE)*3 W - 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
      F126-4 (FR) - F126-23 (FE)*2 W - BR Fuel level signal Ignition switch ON, fuel level full 4.1 to 4.6 V
      Ignition switch ON, fuel level low (fuel level warning light on) Below 1 V
      F126-5 (+S) - Body ground BE - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated Pulse generation (See waveform 1)
      F126-6 (SI) - Body ground LG - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated Pulse generation (See waveform 1)
      F126-12 (RLSB) - Body ground*1 R - Body ground Rear left seat belt buckle switch signal Ignition switch ON, rear LH seat belt unfastened Below 1 V
      Ignition switch ON, rear LH seat belt fastened 11 to 14 V
      F126-13 (RCSB) - Body ground*1 B - Body ground Rear center seat belt buckle switch signal Ignition switch ON, rear center seat belt unfastened Below 1 V
      Ignition switch ON, rear center seat belt fastened 11 to 14 V
      F126-14 (RRSB) - Body ground*1 P - Body ground Rear right seat belt buckle switch signal Ignition switch ON, rear RH seat belt unfastened Below 1 V
      Ignition switch ON, rear RH seat belt fastened 11 to 14 V
      F126-15 (PBLT) - 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
      F126-16 (S) - Body ground B - Body ground Oil pressure signal Engine started 11 to 14 V
      Engine not started Below 1 V
      F126-17 (B/LE) - Body ground L - Body ground Brake fluid level signal Ignition switch ON, brake fluid level not low 11 to 14 V
      Ignition switch ON, brake fluid level low Below 1 V
      F126-19 (E2) - Body ground BR - Body ground Ground Always Below 1 Ω
      F126-20 (ILL-) - Body ground W - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      F126-21 (IG+) - Body ground G - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      F126-27 (CANL) - Body ground W - Body ground CAN communication line - -
      F126-28 (CANH) - Body ground SB - Body ground CAN communication line - -
      F126-29 (MSCH) - Body ground GR - Body ground Local bus communication line - -
      F126-30 (MSCL) - Body ground SB - Body ground Local bus communication line - -
      F126-31 (ES) - Body ground BR - Body ground Ground Always Below 1 Ω
      F126-37 (MSSL) - Body ground R - Body ground Ground Always Below 1 Ω
      F126-38 (MSTI) - Body ground L - 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
      F126-39 (MSM+) - Body ground V - Body ground Steering pad switch assembly signal Ignition switch ON, enter, back and top 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, top switch on steering pad switch assembly pushed 1 to 2.2 V
      F126-40 (WLVL) - 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

      • *1: w/ Rear Seat Belt Warning

      • *2: for 2GR-FKS

      • *3: for 1AR-FE


      1. B003ZSNN02

        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.