how to troubleshoot steering-related codes on Toyota Corolla E170 (2013-2019)?

Solution

1. Preparation

• Gather necessary tools and parts.
• Ensure the vehicle is parked on a level surface with the engine off.
• Disconnect the negative terminal of the battery.

2. Fluid Inspection and Replacement

1. Locate the power steering reservoir.
2. Check the fluid level. If low, top off with the manufacturer-recommended power steering fluid.
3. If the fluid is dirty or contaminated, drain and replace:
   • Remove the reservoir cap.
   • Use a siphon to remove old fluid.
   • Refill with new power steering fluid to the appropriate level.

3. Power Steering Pump Inspection and Replacement

1. Locate the power steering pump.
2. Inspect the pump and drive belt for signs of wear or damage.
3. If the pump is faulty:
   • Disconnect the power steering lines using a wrench.
   • Unbolt the pump from its mounting bracket.
   • Install the new pump by reversing the removal steps and ensuring all bolts are torqued to manufacturer specifications.

4. Steering Angle Sensor Adjustment/Replacement

1. Locate the steering angle sensor on the steering column.
2. Disconnect the wiring harness and remove the sensor.
3. If replacing, install the new sensor and connect the wiring.
4. Use a scan tool to calibrate the new sensor as per manufacturer procedures.

5. Electrical Connection Repair

1. Inspect the connectors leading to the power steering control module.
2. If corrosion or damage is found, clean or replace connectors.
3. Secure all connections and ensure they are tight.