SYS.OK|MANUAL.DB● LIVE
HOMESERVICE MANUALSTOYOTA2013SEQUOIA LIMITED, 5.7L ENG VIN WREPAIR AND DIAGNOSISACCESSORIES & EQUIPMENTWARNING SYSTEMSINTUITIVE PARKING ASSIST SYSTEM (DIAGNOSTICS & CIRCUIT TESTS)INTUITIVE PARKING ASSIST SYSTEMCIRCUIT TESTSVEHICLE SPEED SIGNAL CIRCUITPROCEDURE
2013 Toyota Sequoia Limited, 5.7L Eng VIN W

Vehicle Speed Signal Circuit: Procedure

2013 Toyota Sequoia Limited, 5.7L Eng VIN WSECTION Procedure
  1. INSPECT OPERATION OF SPEEDOMETER 
    1. Drive the vehicle and check if the function of the speedometer on the combination meter is normal.

      OK

      Actual vehicle speed and the speed indicated on the speedometer are the same.

      HINT: 

      • The speed indicated on the speedometer has an allowable margin of error. This can be tested using a speedometer tester (calibrated chassis dynamometer). For details about testing and the margin of error, refer to "Operation Check" in the meter/gauge system. Refer to OPERATION CHECK .
      • The vehicle speed sensor is functioning normally when the indication on the speedometer is normal.

    NG → GO TO METER / GAUGE SYSTEM 

    OK: Go to next step 

  2. CHECK COMBINATION METER ASSEMBLY (SPEED SIGNAL) 
    1. Disconnect the H43 clearance warning ECU connector.
      Fig 1: Identifying H43 Clearance Warning ECU Connector Terminals With Wave form
      GTY240483Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Jack up the drive wheels.
    3. Move the shift lever to N.
    4. Turn the ignition switch to ON.
    5. Using an oscilloscope, check the signal waveform of the meter.
      MEASUREMENT CONDITION

      Item Content
      Terminal No. (Symbol) H43-3 (SPD) - Body ground
      Tool Setting 5 V/DIV., 20 msec./DIV.
      Condition Drive vehicle at 20 km/h (12 mph)

      HINT: 

      As the vehicle speed increases, the wave length shortens.

      OK

      Voltage pulses as shown in the illustration.

    NG → See step   3 

    OK → See step   4 

  3. CHECK HARNESS AND CONNECTOR (CLEARANCE WARNING ECU - COMBINATION METER ASSEMBLY) 
    1. Disconnect the H43 clearance warning ECU connector.
      Fig 2: Measuring Resistance Of Clearance Warning ECU & Combination Meter Assembly Harness & Connectors
      GTY240484Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Disconnect the H37 combination meter assembly connector.
    3. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H43-3 (SPD) - H37-35 (+S) Always Below 1 Ω
      H43-3 (SPD) - Body ground Always 10 kΩ or higher

    NG → REPAIR OR REPLACE HARNESS OR CONNECTOR 

    OK → See step   5 

  4. PROCEED TO NEXT SUSPECTED AREA SHOWN IN PROBLEM SYMPTOMS TABLE. Refer to  PROBLEM SYMPTOMS TABLE  
  5. REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL 
RENDER: 1.0x

NO RELATED

Recommended Tools & Savings

Use the Manual With the Right Hardware

Pair factory procedures with proven DIY tools so the instructions are easier to execute.

Affiliate disclosure: We may earn a commission at no extra cost to you.

Shop Manual-Ready ToolsFree Quote CheckQuote Shield Pro

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.