what does code C1201 indicate for my Toyota Corolla E210 (2019-2024)?

Solution

1. Preparation

• Gather required tools and parts.
• Park the vehicle on a flat surface and engage the parking brake.
• Disconnect the negative battery terminal to ensure safety.

2. Inspect Brake Fluid and Lines

• Sub-steps:
  • Remove the brake fluid reservoir cap and check the fluid level. Refill with manufacturer-recommended brake fluid if necessary.
  • Inspect the brake lines for any signs of leaks or wear. Replace any damaged lines.

3. Check Brake Pressure Sensor

• Sub-steps:
  • Locate the brake pressure sensor, usually found near the master cylinder.
  • Disconnect the electrical connector from the sensor.
  • Use a multimeter to measure the resistance of the sensor. Refer to the service manual for specific resistance values.

4. Replace Brake Pressure Sensor

• Sub-steps:
  • If the brake pressure sensor is faulty, remove it using a socket set.
  • Install the new brake pressure sensor, tightening to the manufacturer's specified torque.
  • Reconnect the electrical connector.

5. Reassemble and Test

• Sub-steps:
  • Reinstall the brake fluid reservoir cap securely.
  • Reconnect the negative battery terminal.
  • Start the vehicle and check for any warning lights on the dashboard.