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Terminals Of Ecu [10/2015 - 08/2016]

  1. COMBINATION METER ASSEMBLY 
    GTY362546Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    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
      G16-5 (SI) - Body ground V - Body ground Speed signal for other systems (Input) Driving at approximately 20 km/h (12 mph) Pulse generation
      (See waveform 1)
      G16-6 (+S) - Body ground P - Body ground Speed signal for other systems (Output) Driving at approximately 20 km/h (12 mph) Pulse generation
      (See waveform 1)
      G16-9 (S) - Body ground L - Body ground Engine oil pressure switch signal Ignition switch ON, engine oil pressure switch off 11 to 14 V
      Ignition switch ON, engine oil pressure switch on Below 1 V
      G16-10 (WLVL) - Body ground LG - Body ground Level warning switch signal Ignition switch ON, washer level indicator light off 11 to 14 V
      Ignition switch ON, washer level indicator light on Below 1 V
      G16-11 (CHK) - Body ground R - Body ground MIL signal Ignition switch ON, MIL off 11 to 14 V
      Ignition switch ON, MIL on Below 1 V
      G16-12 (SW) - Body ground Y - Body ground Brake fluid level warning switch signal Ignition switch ON, brake fluid level warning switch off 11 to 14 V
      Ignition switch ON, brake fluid level warning switch on Below 1 V
      G16-13 (CHG-) - Body ground*4 L - Body ground Charge warning light signal Ignition switch ON, charge warning light off 11 to 14 V
      Ignition switch ON, charge warning light on Below 1 V
      G16-14 (-) - Body ground*5 LG - Body ground*5 High beam indicator light ground Ignition switch ON, high beam indicator light off 10 kΩ or higher
      Ignition switch ON, high beam indicator light on Below 1 Ω
      G16-15 (E) - Body ground GR - Body ground Fuel sender gauge ground Always Below 1 Ω
      G16-16 (L) - Body ground SB - Body ground Fuel sender gauge signal Fuel level F Below 1 V
      Fuel level E 4.5 to 9 V
      G16-17 (TC) - Body ground G - Body ground Tail cancel switch signal Tail cancel switch off 1 MΩ or higher
      Tail cancel switch on Below 1 Ω
      G16-18 (MSTI) - Body ground P - Body ground Steering pad switch assembly ground*2 Always Below 1 Ω
      Steering pad switch assembly signal*3 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
      G16-19 (+) - Body ground*5 R - Body ground High beam indicator light signal Ignition switch ON, high beam indicator light off Below 1 V
      Ignition switch ON, high beam indicator light on 11 to 14 V
      G16-21 (ET) - Body ground BR - Body ground Ground Always Below 1 Ω
      G16-22 (MSCL) - Body ground SB - Body ground CAN communication line - -
      G16-23 (MSCH) - Body ground V - Body ground CAN communication line - -
      G16-28 (STRG) - Body ground*2 L - Body ground Steering pad switch (DISP) signal Ignition switch ON, steering pad switch (DISP) off 4.4 to 5.6 V
      Ignition switch ON, steering pad switch (DISP) on Below 1 V
      G16-28 (MSM+) - Body ground*3 L - 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
      G16-29 (HAZ) - Body ground BE - Body ground Turn signal switch (full turn) signal Ignition switch ON, turn signal switch (full turn) off 4.4 to 5.6 V
      Ignition switch ON, turn signal switch (full turn) on Below 1 V
      G16-31 (CANL) - Body ground W - Body ground CAN communication line - -
      G16-32 (CANH) - Body ground G - Body ground CAN communication line - -
      G16-33 (SW3) - Body ground P - Body ground Ground Always Below 1 Ω
      G16-34 (TX1-) - Body ground W - Body ground Thermistor signal ground Always Below 1 V
      G16-35 (TX1+) - Body ground G - Body ground Thermistor signal Ignition switch ON 4.4 to 5.6 V
      G16-36 (SW2) - Body ground GR - Body ground Light control rheostat signal Ignition switch ON, light control rheostat position (min.) Below 1 V
      Ignition switch ON, light control rheostat position (max.) 4 to 6 V
      G16-37 (SW1) - Body ground V - Body ground Light control rheostat signal Always 4 to 6 V
      G16-39 (IG+) - Body ground B - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      G16-40 (B) - Body ground Y - Body ground Battery Always 11 to 14 V
      G17-1 (B) - Body ground L - Body ground Battery Always 11 to 14 V
      G17-3 (HAZ) - Body ground GR - Body ground Hazard warning switch signal Ignition switch ON, hazard warning switch not pressed 11 to 14 V
      Ignition switch ON, hazard warning switch pressed Below 1 V
      G17-7 (LR) - Body ground L - Body ground Turn signal light (RH) signal Ignition switch ON, turn signal light (RH) off Below 1 V
      Ignition switch ON, turn signal light (RH) on 11 to 14 V
      G17-9 (ER) - Body ground SB - Body ground Turn signal switch (RH) signal Ignition switch ON, turn signal switch (RH) off 11 to 14 V
      Ignition switch ON, turn signal switch (RH) on Below 1 V
      G17-10 (EL) - Body ground LG - Body ground Turn signal switch (LH) signal Ignition switch ON, turn signal switch (LH) off 11 to 14 V
      Ignition switch ON, turn signal switch (LH) on Below 1 V
      G17-12 (FOG) - Body ground*1 Y - 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
      G17-13 (LL) - Body ground Y - Body ground Turn signal light (LH) signal Ignition switch ON, turn signal light (LH) off Below 1 V
      Ignition switch ON, turn signal light (LH) on 11 to 14 V
      1. *1: w/ Front Fog Light
      2. *2: for Segment Display Type
      3. *3: for TFT Display Type
      4. *4: for AWD
      5. *5: for Halogen Head Light
    2. Using an oscilloscope, check waveform 1.
      GTY381549Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Condition
      Tester Connection G16-5 (SI) - Body ground
      G16-6 (+S) - Body ground
      Tool Setting 5 V/DIV., 20 ms./DIV.
      Vehicle Condition Driving at approximately 20 km/h (12 mph)

      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.

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