how to diagnose a power steering pump failure in Toyota Corolla E170 (2013-2019)

Solution

1. Preparation

• Gather tools and materials.
• Ensure the vehicle is parked on a level surface and the engine is off.
• Disconnect the negative battery terminal for safety.

2. Inspect and Replace Fluid

• Sub-steps:
  1. Remove the power steering fluid reservoir cap.
  2. Inspect fluid for contamination (milky appearance or particles).
  3. If contaminated, drain the fluid using a siphon or turkey baster.
  4. Refill with the manufacturer-recommended power steering fluid (Toyota ATF Type T-IV).

3. Remove and Replace Power Steering Pump

• Tools Required:

  • Socket set
  • Torque wrench
  • Screwdriver set
  • Fluid catch pan

• Sub-steps:

  1. Remove any engine covers or components obstructing access to the power steering pump.
  2. Disconnect the power steering pressure and return hoses. Use a catch pan to collect any fluid.
  3. Unbolt the power steering pump from its mounting bracket (typically 2-3 bolts).
  4. Remove the pump from the vehicle.
  5. Install the new power steering pump in reverse order of removal, ensuring to torque bolts to manufacturer specifications.
  6. Reconnect the hoses and ensure all connections are secure.

4. Refill and Bleed the System

• Sub-steps:
  1. Refill the power steering fluid reservoir with the recommended fluid.
  2. Start the engine and turn the steering wheel from lock to lock several times to bleed air from the system.
  3. Check fluid level again and add fluid if necessary.