how to troubleshoot EPS problems in Toyota Camry XV70 (2018-2024)

Solution

1. Preparation

• Gather tools: OBD-II scanner, multimeter, socket set, torque wrench, and basic hand tools.
• Disconnect the negative battery terminal to ensure safety during repairs.

2. Inspect and Replace Fuse/Relay

• Locate the fuse box (refer to the owner's manual for the specific location).
• Remove the EPS fuse and visually inspect it; replace if blown (typically a 10A or 15A fuse).
• Check the EPS relay: remove it and test it using the multimeter; replace if faulty.

3. Check and Clean EPS Motor Connections

• Locate the EPS motor, usually mounted on the steering column.
• Disconnect the wiring harness from the EPS motor.
• Inspect the connectors for corrosion or damage; clean with electrical contact cleaner if necessary.
• Reconnect the wiring harness securely to the EPS motor.

4. Test and Calibrate EPS System

• Reconnect the negative battery terminal.
• Use an OBD-II scanner to check if any error codes persist after the electrical connections have been cleaned.
• If the steering column angle sensor requires calibration, follow the manufacturer's procedure using the diagnostic tool.
• Clear any stored codes and perform a steering calibration procedure, if necessary.

5. Replace EPS Motor (if needed)

• If diagnostics indicate motor failure, remove the EPS motor from the steering column.
  • Remove any mounting bolts using a socket set.
  • Disconnect the wiring harness and remove the motor.
• Install the new EPS motor by reversing the removal steps, ensuring all connections are secure and properly torqued (typically around 10-15 ft-lbs).