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Home/Cars/Toyota/Corolla/E210 (2019-2024)/how to resolve C1231 code in Toyota Corolla E210 (2019-2024)?

how to resolve C1231 code in Toyota Corolla E210 (2019-2024)?

Toyota Corolla E210 (2019-2024)

Error Codes
Severity: highDifficulty: mediumError Code: C12311-2 hours
3 min read
556 words

⚠️ Safety Warning

This issue requires immediate attention. If you are not experienced with automotive repairs, consult a professional mechanic. Working on critical systems can be dangerous.

Problem Statement

Learn how to diagnose and fix C1231 ABS malfunction in Toyota Corolla E210 (2019-2024). Step-by-step guide with diagnostic procedures and repair instructions.

Error Code
C1231
Affected Component
Brakes
Estimated Time
1-2 hours

Safety Warnings

  • ⚠Disconnect the battery before working on electrical components to avoid short circuits.
  • ⚠Allow the vehicle to cool down before working on the braking system to prevent burns.

Symptoms

  • •ABS warning light illuminated on the dashboard
  • •Traction control light illuminated
  • •Potential loss of ABS functionality during braking
  • •Erratic or inconsistent braking performance
  • •Increased stopping distance in slippery conditions

Diagnostic Steps

  1. 1Use an OBD-II scanner to confirm the C1231 code and check for any additional codes.
  2. 2Inspect the wheel speed sensor wiring and connectors for damage, corrosion, or loose connections.
  3. 3Measure the resistance of the wheel speed sensor using a multimeter to ensure it is within specifications.
  4. 4Check the ABS control module for faults or damaged components.
  5. 5Inspect the brake system components for proper installation and condition, ensuring nothing is obstructing the wheel speed sensor.
  6. 6Test the vehicle’s battery and electrical system to ensure proper voltage and ground are present.

Solution

Solution

1. Preparation

  • Gather tools and parts required.
  • Ensure the vehicle is on a flat surface and engage the parking brake.
  • Disconnect the battery to prevent electrical shorts.

2. Inspect and Repair Wheel Speed Sensor

  • Step 1: Locate the wheel speed sensor (usually mounted on the wheel hub or knuckle).
  • Step 2: Remove any protective covers if necessary.
  • Step 3: Disconnect the sensor’s electrical connector.
  • Step 4: Inspect the wiring for any signs of wear or damage. Repair or replace any damaged wiring.
  • Step 5: If necessary, remove the wheel speed sensor from its mount using the appropriate socket (usually a 10mm or 12mm socket).
  • Step 6: Clean the mounting area and the sensor tip to remove any debris or corrosion.
  • Step 7: Install a new wheel speed sensor if the old one is faulty, ensuring it is securely mounted.

3. Reconnect Electrical Components

  • Step 1: Reconnect the electrical connector to the wheel speed sensor.
  • Step 2: Ensure all connections are secure and free from corrosion.

4. Reconnect Battery and Clear Codes

  • Step 1: Reconnect the vehicle’s battery.
  • Step 2: Use the OBD-II scanner to clear the C1231 code from the system.
  • Step 3: Start the vehicle and allow it to run for a few minutes to check if the ABS light remains off.

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
  • •Multimeter
  • •Socket set (including 10mm and 12mm sockets)
  • •Torque wrench

Parts Required

  • •Wheel speed sensor (if replacement is needed)
  • •Electrical connectors (if damaged)

Additional Information

Error Code
C1231
Affected Component
Brakes
Estimated Time
1-2 hours
Difficulty
medium
Severity
high
Tools Required
4 items
Parts Required
2 items

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