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Terminals Of Ecu [08/2016 - ]

  1. COMBINATION METER ASSEMBLY 
    GTY690546Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    1. Measure the voltage, resistance and check for pulses according to the value(s) in the table below.
      Terminal No. (Symbol) Wiring Color Terminal Description Condition Specified Condition
      D145-1 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      D145-3 (+S) - Body ground LG - Body ground Speed signal for other system (Output) Ignition switch ON, wheel being rotated Pulse generation
      (See waveform 1)
      D145-4 (SI) - Body ground GR - Body ground Speed signal for other system (Input) Ignition switch ON, wheel being rotated Pulse generation
      (See waveform 1)
      D145-6 (FLDS) - Body ground*3 V - Body ground 3rd seat indicator signal Ignition switch ON, 3rd seat indicator light on Below 3 V
      Ignition switch ON, 3rd seat indicator light off 11 to 14 V
      D145-8 (S) - Body ground Y - Body ground Oil pressure signal Engine started 11 to 14 V
      Engine not started Below 1 V
      D145-9 (B/LE) - Body ground Y - 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
      Vacuum warning switch signal Ignition switch ON, vacuum is detected 11 to 14 V
      Ignition switch ON, vacuum not detected Below 1 V
      D145-10 (TIRE) - Body ground GR - Body ground Tire pressure warning light signal Ignition switch ON, tire pressure warning light off 11 to 14 V
      Ignition switch ON, tire pressure warning light ON Below 1 V
      D145-11 (E1) - Body ground W-B - Body ground Ground Always Below 1 Ω
      D145-12 (ILL-) - Body ground GR - Body ground Illumination signal Headlight dimmer switch off Below 1 V
      Headlight dimmer switch in tail or head position Pulse generation
      D145-13 (IG+) - Body ground GR - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      D145-14 (FR) - D145-15 (FE) G - GR 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
      D145-16 (CANL) - Body ground W - Body ground CAN communication line - -
      D145-17 (CANH) - Body ground P - Body ground CAN communication line - -
      D145-18 (MSCH) - Body ground L - Body ground Local bus communication line - -
      D145-19 (MSCL) - Body ground W - Body ground Local bus communication line - -
      D145-20 (ES) - Body ground BR - Body ground Ground Always Below 1 Ω
      D145-21 (MSSL) - Body ground V - Body ground Ground Always Below 1 Ω
      D145-22 (MSTI) - Body ground*1 P - Body ground Steering pad switch assembly signal Ignition switch ON, up, down, right, and left switches on steering pad switch assembly not pushed 4.8 to 5.2 V
      Ignition switch ON, up, down, right, or left switches on steering pad switch assembly pushed Below 1 V
      D145-23 (MSM+) - Body ground*1 GR - Body ground Steering pad switch assembly signal Ignition switch ON, enter, top and back switches on steering pad switch assembly not pushed 4.8 to 5.2 V
      Ignition switch ON, enter, top or back switches on steering pad switch assembly pushed Below 1 V
      D145-23 (MSM+) - Body ground*2 GR - Body ground Steering pad switch assembly (DISP switch) signal Ignition switch ON, DISP switch not pressed 4.8 to 5.2 V
      Ignition switch ON, DISP switch pressed Below 1 V
      D145-24 (WLVL) - Body ground L - 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
      D146-1 (B) - Body ground W - Body ground Battery Always 11 to 14 V
      D146-3 (LP) - Body ground B - Body ground Security indicator circuit Ignition switch ON, security indicator light off Below 1 V
      Ignition switch ON, security indicator light blinks 11 to 14 V
      D146-4 (OIL) - Body ground Y - Body ground Oil level switch signal Engine running, charge "LOW ENGINE OIL LEVEL ADD OR REPLACE" not displayed*2 or "Low Engine Oil Level ADD or Replace" not displayed*1 11 to 14 V
      Engine running, "LOW ENGINE OIL LEVEL ADD OR REPLACE" not displayed*2 or "Low Engine Oil Level Add or Replace" displayed*1 Below 1 V
      D146-5 (HAZ) - Body ground B - 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
      D146-7 (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
      D146-8 (SW) - Body ground P - 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
      D146-9 (ER) - Body ground GR - 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
      D146-10 (EL) - Body ground V - 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
      D146-12 (CHK) - Body ground G - Body ground MIL input signal Ignition switch ON, MIL on Below 3 V
      Ignition switch ON, MIL off 11 to 14 V
      D146-13 (LR) - Body ground BE - 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
      1. *1: except 4 Speakers
      2. *2: for 4 Speakers
      3. *3: w/ Power Seat Type
      1. Waveform 1 (Reference):
        Item Condition
        Tool Setting 5 V/DIV., 20 ms./DIV.
        Vehicle Condition Ignition switch ON, wheel being rotated

        HINT: 

        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.

        Fig 1: Waveform 1
        GTY472144Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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