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Home >> Toyota >> 2016 >> 4Runner Trail >> Repair and Diagnosis >> Accessories & Equipment >> Gauges & Instrument Panels >> Meter / Gauge System - Diagnostics - Introduction (2 Of 2) >> Meter / Gauge System >> Terminals Of Ecu [08/2015 - 08/2019] >> Terminals Of Ecu [08/2015 - 08/2019]

Terminals Of Ecu [08/2015 - 08/2019]

  1. COMBINATION METER ASSEMBLY 
    Fig 1: Combination Meter Assembly Connector End View
    GTY710990Courtesy 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
      1 (CANH) - Body ground L - Body ground CAN communication signal Ignition switch off 200 Ω or higher
      2 (CANL) - Body ground W - Body ground CAN communication signal Ignition switch off 200 Ω or higher
      3 (MSSL) - Body ground P - Body ground Steering pad switch assembly (DISP switch) signal Ignition switch to ON, DISP switch not pressed 4 to 5 V
      Ignition switch to ON, DISP switch pressed Below 1 V
      6 (LINT) - Body ground*1 LG - Body ground LIN (Drive monitor switch communication) Ignition switch ON Pulse generation
      7 (RR) - Body ground*2 Y - Body ground No. 1 Ultrasonic sensor (for rear corner RH) Clearance warning indication for rear corner RH is displayed Below 3 V
      8 (S) - Body ground V - Body ground Oil pressure switch signal Ignition switch ON, oil pressure warning light off 11 to 14 V
      Ignition switch ON, oil pressure warning light on Below 1 V
      9 (TIRE) - Body ground G - 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 blinking Below 1 V
      10 (IL2-) - Body ground GR - Body ground Illumination signal Light control switch off Below 1 V
      Light control switch in tail or head position Pulse generation
      11 (ILL-) - Body ground GR - Body ground Illumination signal Light control switch off Below 1 V
      Light control switch in tail or head position Pulse generation
      12 (RL) - Body ground*2 GR - Body ground No. 1 Ultrasonic sensor (for rear corner LH) Clearance warning indication for rear corner LH is displayed Below 3 V
      13 (MGND) - Body ground W-B - Body ground Ground (Signal ground) Always Below 1 V
      14 (SW) - Body ground*7 V - Body ground Brake fluid level warning switch signal Ignition switch ON, brake fluid level warning light on Below 1 V
      Ignition switch ON, brake fluid level warning light off 11 to 14 V
      15 (B) - Body ground L - Body ground Battery Always 11 to 14 V
      17 (IG+) - Body ground R - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ON 11 to 14 V
      18 (BK) - Body ground*2 SB - Body ground No. 1 Ultrasonic sensor (for rear corner LH and RH) Clearance warning indication for back right and left sensor are displayed Below 3 V
      19 (E3) - Body ground B - Body ground Ground (Fuel ground) Always Below 1 V
      20 (E1) - Body ground W-B - Body ground Ground Always Below 1 V
      21 (STP+) - Body ground*3 G - Body ground Automatic Running Boards warning light signal Automatic Running Boards warning light on or blinking 11 to 14 V
      Automatic Running Boards warning light off Below 1 V
      22 (STPA) - Body ground*3 W - Body ground Ground Automatic Running Boards warning light off 11 to 14 V
      Ignition switch ON, automatic running boards warning light on Below 1 V
      23 (MSCH) - Body ground*4 LG - Body ground CAN communication signal Ignition switch off 200 Ω or higher
      24 (MSCL) - Body ground*4 W - Body ground CAN communication signal Ignition switch off 200 Ω or higher
      25 (B) - Body ground SB - Body ground Turn indicator light signal Ignition switch ON, turn RH indicator light off Below 1 V
      Ignition switch ON, turn RH indicator light blinking 11 to 14 V
      26 (CHG-) - Body ground P - 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
      27 (WLVL) - Body ground*5 R - Body ground Washer level warning switch signal Ignition switch ON, washer level warning light off 11 to 14 V
      Ignition switch ON, washer level warning light on Below 1 V
      28 (+S) - Body ground SB - Body ground Speed signal for other systems (Output) Driving at approx. 20 km/h (12 mph) Pulse generation (See waveform 1)
      29 (SI) - Body ground G - Body ground Speed signal for other systems (Input) Driving at approx. 20 km/h (12 mph) Pulse generation (See waveform 1)
      30 (CHK) - Body ground L - 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
      31 (OP) - Body ground*2 LG - Body ground Clearance warning ECU signal Clearance warning indication is displayed Below 3 V
      32 (FL) - Body ground*2 P - Body ground No. 1 Ultrasonic sensor (for front corner LH) Clearance warning indication for front corner LH is displayed Below 3 V
      33 (B) - Body ground Y - Body ground Turn indicator light signal Ignition switch ON, turn LH indicator light off Below 1 V
      Ignition switch ON, turn LH indicator light blinking 11 to 14 V
      35 (FR) - Body ground*2 B - Body ground No. 1 Ultrasonic sensor (for front corner RH) Clearance warning indication for front corner RH is displayed Below 3 V
      36 (TC) - Body ground*6 W - Body ground TAIL cancel switch signal TAIL cancel switch off 1 MΩ or higher
      TAIL cancel switch on Below 1 Ω
      37 (RHIG) - Body ground*6 B - Body ground Power source for light control rheostat Ignition switch ON 4.6 to 5.4 V
      38 (TR) - Body ground*6 GR - Body ground Light control rheostat signal Light control rheostat dial fully turned downward Below 1 Ω
      Light control rheostat dial fully turned upward 8 to 12 kΩ
      39 (E2) - Body ground*6 LG - Body ground Light control rheostat switch ground Always Below 1 Ω
      40 (L) - Body ground W - Body ground Fuel level signal Ignition switch ON, fuel level warning light off Below 4 V
      Ignition switch ON, fuel level warning light on 4 to 9 V
      1. *1: w/ CRAWL Control
      2. *2: w/ Intuitive Parking Assist System
      3. *3: w/ Automatic Running Board System
      4. *4: w/ Seat Position Memory
      5. *5: w/ Level Warning Switch Assembly
      6. *6: w/ Light Control Rheostat
      7. *7: for 2WD
    2. Using an oscilloscope, check waveform 1.
      Fig 2: Waveform 1
      GTY739564Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      WAVEFORM 1 (REFERENCE)

      Item Condition
      Tool setting 5 V/DIV., 20 ms./DIV.
      Vehicle condition Driving at approx. 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.

  2. ACCESSORY METER ASSEMBLY 
    Fig 3: Accessory Meter Assembly Connector End View
    GTY696250Courtesy 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
      G36-1 (B) - Body ground L - Body ground Battery Always 11 to 14 V
      G36-2 (ACC) - Body ground P - Body ground Ignition switch signal Ignition switch off Below 1 V
      Ignition switch ACC 11 to 14 V
      G36-3 (ILL+) - Body ground G - Body ground Illumination signal Light control switch in tail or head position 11 to 14 V
      G36-7 (E) - Body ground W-B - Body ground Ground Always Below 1 Ω
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