what should I do if my Toyota Highlander Third Generation (2014-2019) has a C1201 code

Solution

1. Preparation

• Gather tools such as a socket set, multimeter, OBD-II scanner, and screwdriver.
• Ensure the vehicle is on a flat, stable surface and the engine is turned off.
• Disconnect the battery negative terminal to ensure safety.

2. Inspect ABS Wheel Speed Sensors

• Remove the wheel on the affected axle to access the ABS sensor.
• Inspect the sensor for physical damage or dirt buildup.
• Clean the sensor and the mounting area with brake cleaner if necessary.
• Reinstall the wheel and reconnect the battery.

3. Check ABS Fuse

• Locate the fuse box under the dashboard or in the engine compartment.
• Identify the fuse associated with the ABS system using the fuse diagram.
• Remove the fuse and check for continuity using a multimeter.
• Replace the fuse if it is blown and reconnect the battery.

4. Test ABS Control Module Connector

• Reconnect the battery and turn the ignition to the "ON" position without starting the engine.
• Use a multimeter to check for voltage at the ABS control module connector.
• If voltage is absent, trace the wiring back to the power source and repair any breaks.

5. Clear Codes and Test Drive

• Use the OBD-II scanner to clear the C1201 code and any related codes.
• Start the vehicle and conduct a test drive to check if the warning lights reappear.