Toyota Corolla E140 (2006-2013) traction control light stays on what does that mean

Solution

1. Preparation

• Gather necessary tools and parts.
• Disconnect the negative battery terminal to prevent electrical shorts.
• Ensure the vehicle is parked on a level surface and secured with wheel chocks.

2. Inspect and Clean Wheel Speed Sensors

• Tools Required: Socket set, cleaning brush, compressed air
• Remove the wheel on the affected side to access the wheel speed sensor.
• Disconnect the sensor harness and remove the sensor using the socket set.
• Clean the sensor and the mounting area with a cleaning brush and compressed air to remove any debris.
• Reinstall the sensor and reconnect the harness.

3. Check Brake System Components

• Tools Required: Brake fluid, brake cleaner, socket set
• Inspect brake lines for leaks and ensure brake fluid is at the correct level.
• Check brake pads and rotors for wear; replace if necessary.
• Clean the ABS module connectors and inspect for corrosion.

4. Test the Traction Control Module

• Tools Required: Multimeter
• Locate the traction control module, typically found near the ABS unit.
• Measure voltage at the connectors while the ignition is on but the engine is off.
• Compare readings to manufacturer specifications; replace the module if readings are outside the norm.

5. Reconnect Battery and Test System

• Reconnect the negative battery terminal.
• Start the vehicle and check if the traction control light remains illuminated.
• Perform a test drive to ensure normal operation of the traction control system.