On-Vehicle Inspection [12/2024 - ]: Procedure

2025 Toyota 4Runner SR5, RWDSECTION Procedure
  1. INSPECT THROTTLE BODY WITH MOTOR ASSEMBLY 

    Pre-procedure1

    • Before cleaning, or after cleaning the throttle body with motor assembly and installing it to the vehicle, turn the ignition switch to ON without operating the accelerator pedal sensor assembly.
      NOTE:

      If the accelerator pedal sensor assembly has been operated, restart the procedure from the step above.

    • Connect the GTS to the DLC3 and check for DTCs. If DTCs are stored, repair them by following the repair procedure flow. If DTCs are not stored, perform the throttle body operation check.
    • Check throttle body operation.
      1. Enter the following menus:

        Powertrain / Engine / Active Test / Control the ETCS Open/Close Slow Speed

      2. During Active Test operation, check the Data List items "Throttle Position Command" and "Throttle Position Sensor No. 1 Voltage".

        Powertrain > Engine > Active Test 

        Active Test Display
        Control the ETCS Open/Close Slow Speed
        Data List Display
        Throttle Position Sensor No. 1 Voltage
        Throttle Position Command
        GTY995253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Correct *b Incorrect
        *c Throttle Position Command *d Throttle Position Sensor No. 1 Voltage
        *e Specified Condition *f 200 ms

        OK

        Tester Display Condition Specified Condition
        Throttle Position Command
        Throttle Position Sensor No. 1 Voltage
        Checked during Active Test operation at a voltage of 1.3 V to 2.1 V. Response lag between Throttle Position Command and Throttle Position Sensor No. 1 Voltage is within 200 ms.
      3. Enter the following menus:

        Powertrain / Engine / Active Test / Control the ETCS Open/Close Fast Speed

      4. During Active Test operation, check the Data List items "Throttle Position Command" and "Throttle Position Sensor No. 1 Voltage".

        Powertrain > Engine > Active Test 

        Active Test Display
        Control the ETCS Open/Close Fast Speed
        Data List Display
        Throttle Position Sensor No. 1 Voltage
        Throttle Position Command
        GTY995263Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *a Correct *b Incorrect
        *c Throttle Position Command *d Throttle Position Sensor No. 1 Voltage
        *e Specified Condition *f 200 ms

        OK

        Tester Display Condition Specified Condition
        Throttle Position Command
        Throttle Position Sensor No. 1 Voltage
        Checked during Active Test operation at a voltage of 1.3 V to 2.1 V. Response lag between Throttle Position Command and Throttle Position Sensor No. 1 Voltage is within 200 ms.
    • Warm up the engine.
      NOTE:
      • The A/C switch and all accessory switches should be off.
      • The electric fan should be off.
      • After warming up the engine, check that the coolant temperature is 75°C (167°F) or more.
    • Check the "Throttle Position Sensor No. 1 Voltage %".
      1. Read the Data List while quickly and fully depressing the accelerator pedal and check that the value for "Throttle Position Sensor No. 1 Voltage %" is 60% or more.
    • If there was any abnormality found during the throttle body operation check or "Throttle Position Sensor No. 1 Voltage %" check, clean the throttle body, then reassemble it and perform the throttle body operation check again. If the operation returns to normal, the procedure is complete. If operation does not return to normal, replace the throttle body with motor assembly.
    • Perform "Inspection After Repair" after replacing or cleaning the throttle body with motor assembly.

      HINT: 

    Post-procedure1

    • None
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.

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.