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What are the common problems with the electronic throttle control in a 2020 Toyota Camry? - Toyota Camry
Home/Cars/Toyota/Camry/Eighth Generation (2018-present)/What are the common problems with the electronic throttle control in a 2020 Toyota Camry?

What are the common problems with the electronic throttle control in a 2020 Toyota Camry?

Toyota Camry Eighth Generation (2018-present)

Error Codes
2-4 hours
Time
medium
Difficulty
medium
Severity
Navigation
ProblemSymptomsDiagnosisSolution
ProblemSymptomsDiagnosisSolution
4 min read
742 words

Problem Statement

Learn about the common problems, symptoms, and diagnostic steps for the electronic throttle control system in a 2020 Toyota Camry.

Affected Component
Electronic Throttle Control
Estimated Time
2-4 hours

Symptoms

  • •Unresponsive Throttle
  • •Rough Idle
  • •Check Engine Light
  • •Acceleration Hesitation
  • •Limp Mode Activation
  • •Poor Fuel Economy

Diagnostic Steps

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Solution

💡 Expert Tip

For complex repairs like this, consider taking photos at each step. This helps if you need to reverse a step or consult with a mechanic. Also, keep all removed parts organized - you may need to reference them during reassembly.

Verification

After completing the repair, verify that the issue has been resolved:

  • ✓Test the affected component to ensure it functions correctly
  • ✓Check for any error codes or warning lights
  • ✓Monitor the vehicle for a few days to ensure the issue does not recur

Prevention Tips

To prevent this issue from occurring again:

  • •Follow the manufacturer's recommended maintenance schedule
  • •Address warning signs early before they develop into major issues
  • •Use quality parts and fluids recommended for your vehicle
  • •Keep detailed records of all repairs and maintenance

Tools & Equipment Required

  • •OBD-II Scanner
  • •Digital Multimeter
  • •Torque Wrench
  • •Socket Set
  • •Screwdrivers
  • •Throttle Body Cleaner
  • •Safety Equipment (gloves, goggles)

Additional Information

Affected Component
Electronic Throttle Control
Estimated Time
2-4 hours
Difficulty
medium
Severity
medium
Tools Required
7 items

Related Faults

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Back to Generation
Common Problems with the Electronic Throttle Control in a 2020 Toyota Camry

The electronic throttle control (ETC) system in a 2020 Toyota Camry, part of the Eighth Generation (XV70), can experience several issues. Here are the most common problems, symptoms, and diagnostic steps to address them:

Common Symptoms of ETC Problems

  1. Unresponsive Throttle: The vehicle may not respond as expected when pressing the accelerator pedal.
  2. Rough Idle: The engine may idle roughly or stall intermittently.
  3. Check Engine Light: The dashboard may display the check engine light, often accompanied by specific fault codes related to the throttle system.
  4. Acceleration Hesitation: The vehicle may hesitate or surge during acceleration.
  5. Limp Mode Activation: The vehicle may enter limp mode, limiting engine power to prevent damage.
  6. Poor Fuel Economy: Abnormal throttle response can lead to decreased fuel efficiency.

Tools Required

  • OBD-II Scanner
  • Digital Multimeter
  • Torque Wrench
  • Socket Set
  • Screwdrivers
  • Throttle Body Cleaner
  • Safety Equipment (gloves, goggles)

Step 1: Scan for Fault Codes

  1. Connect OBD-II Scanner: Plug the scanner into the OBD-II port located under the dashboard on the driver's side.
  2. Read Codes: Turn the ignition to the "On" position without starting the engine. Read any stored fault codes related to the throttle control system (e.g., P2111, P2112, P0121).
  3. Document Codes: Write down the codes and any related freeze frame data for further analysis.

Step 2: Visual Inspection

  1. Inspect Wiring and Connectors: Check electrical connectors and wiring leading to the throttle body for damage, corrosion, or loose connections.
  2. Throttle Body Condition: Remove the engine cover if necessary and visually inspect the throttle body for carbon buildup or physical damage.
  3. Air Intake System: Ensure there are no vacuum leaks in the air intake system.

Step 3: Test Throttle Position Sensor (TPS)

  1. Disconnect TPS Connector: Carefully unplug the throttle position sensor from the throttle body.
  2. Use Multimeter: Set the multimeter to measure resistance (ohms) and connect leads to the TPS terminals.
  3. Check Resistance Values: Slowly move the throttle plate and observe the resistance values. They should change smoothly without any jumps or drops.

Step 4: Check Throttle Body Operation

  1. Reconnect TPS: Plug the throttle position sensor back in.
  2. Turn Ignition On: With the engine off, turn the ignition to the "On" position while observing the throttle plate.
  3. Watch for Movement: The throttle plate should move slightly to a predefined position. If it does not move, further diagnosis of the electronic control unit (ECU) may be required.

Step 5: Inspect the Accelerator Pedal Position Sensor (APPS)

  1. Locate APPS: Find the accelerator pedal assembly under the dashboard.
  2. Disconnect APPS Connector: Unplug the sensor from the accelerator pedal.
  3. Test with Multimeter: Measure the voltage output of the APPS while pressing the accelerator pedal. The voltage should steadily increase from idle to full throttle.
Repair Instructions

Cleaning the Throttle Body

  1. Remove Throttle Body: If excessive carbon buildup is found, remove the throttle body by unscrewing the mounting bolts and disconnecting the connectors and vacuum lines.
  2. Clean the Throttle Body: Use throttle body cleaner and a soft brush to clean the inside of the throttle body. Ensure no cleaner residue remains.
  3. Reinstall Throttle Body: Reattach the throttle body to the intake manifold and reconnect all connectors and hoses.

Replacing the Throttle Position Sensor (if faulty)

  1. Remove Old Sensor: If the TPS is faulty, remove it by unscrewing the mounting screws.
  2. Install New Sensor: Place the new throttle position sensor in position and secure it with screws.
  3. Reconnect Electrical Connector: Reattach the electrical connector to the new TPS.

Replacing the Accelerator Pedal Position Sensor (if faulty)

  1. Remove the Accelerator Pedal Assembly: Unscrew the assembly from its mounting point.
  2. Install New APPS: Replace it with a new accelerator pedal position sensor.
  3. Reassemble: Reattach the pedal assembly and ensure all connections are secure.
Final Steps
  1. Clear Fault Codes: Use the OBD-II scanner to clear any fault codes.
  2. Test Drive: Conduct a test drive to ensure that the throttle responds correctly and the symptoms have been resolved.
  3. Monitor Performance: After the test drive, monitor the vehicle for any reoccurrence of symptoms.

By following these detailed steps, you can effectively diagnose and repair common electronic throttle control problems in a 2020 Toyota Camry.