what does the C1223 code indicate for my Toyota RAV4

Solution

1. Preparation

• Gather the necessary tools and parts.
• Disconnect the vehicle's battery to prevent electrical shorts and ensure safety.

2. Inspect and Clean Wheel Speed Sensors

• Locate the wheel speed sensors at each wheel hub.
• Remove any debris or dirt around the sensors using a clean cloth.
• If any sensors are damaged, proceed to replace them (see step 3).

3. Replace Wheel Speed Sensors

• Use a socket set to remove the bolts securing the wheel speed sensors.
• Disconnect the electrical connector from the sensor.
• Install the new wheel speed sensor by reversing the removal steps.
  • Ensure proper alignment and secure the sensor with the appropriate torque (refer to service manual for specifications).
• Reconnect the electrical connector.

4. Check ABS Control Module

• Locate the ABS control module (generally found near the brake master cylinder).
• Inspect for damage or corrosion; clean the connectors if necessary.
• If the module shows signs of malfunction, replace it with a compatible unit.

5. Reconnect Battery and Test

• Reconnect the vehicle's battery.
• Clear any diagnostic codes from the system using the OBD-II scanner.
• Perform a test drive to ensure that the ABS warning light does not reappear and that ABS functionality is restored.