how to diagnose C1201 error code on Toyota Camry Seventh Generation (2012-2017)

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is on a level surface and secure it with wheel chocks.
• Disconnect the negative terminal of the battery.

2. Inspect and Replace ABS Fuse

• Locate the fuse box (refer to the owner’s manual for the exact location).
• Remove the fuse related to the ABS system using a fuse puller.
• Check the fuse for continuity with a multimeter; replace if blown.
• Reinstall the new fuse and reconnect the battery terminal.

3. Check ABS Wheel Speed Sensors

• Raise the vehicle and remove the wheel to access the wheel speed sensors.
• Disconnect the sensor connector and inspect for corrosion.
• Measure the resistance of the sensor using a multimeter; it should typically be between 1,000 to 2,000 ohms.
• If resistance is out of specifications, replace the wheel speed sensor.

4. Inspect ABS Control Module

• Locate the ABS control module (usually near the master cylinder).
• Inspect the wiring harness for any broken or frayed wires.
• Check for any signs of moisture or corrosion in the module connectors.
• If damage is evident, replace the ABS control module.

5. Reconnect and Test

• Reconnect the battery terminal.
• Clear any stored codes using an OBD-II scanner.
• Perform a test drive to ensure that the ABS system is functioning correctly and that the C1201 code does not return.