This procedure documents the inspection and verification of the Electric Power Steering (EPS) system on the 2018-2024 Toyota Camry 2.5L I4, which uses an electric motor rather than hydraulic fluid.

Warnings

Tools required

Parts

• EPS fuse (if blown) × 1 — Check fuse box diagram for amp rating

Preparation

1. Park vehicle on level ground and engage parking brake
2. Turn ignition off and remove key
3. Allow engine to cool if recently operated
4. Disconnect negative battery terminal and wait 2 minutes for system capacitor discharge
5. Locate EPS control module (mounted on steering column under dash)

Procedure

1. 1

   Verify EPS System Type
   Confirm that the vehicle is equipped with Electric Power Steering by checking the absence of a power steering fluid reservoir in the engine bay. The 2018-2024 Camry 2.5L I4 does not have a hydraulic pump, reservoir, or fluid lines.
2. 2

   Scan for Diagnostic Trouble Codes
   Connect OBD-II scanner to the diagnostic port located under the driver's side dash. Turn ignition to ON position (do not start engine). Scan for EPS-related DTCs, particularly codes C1513 (EPS motor malfunction), C1515 (steering angle sensor), and U0126 (EPS communication fault). Record all codes for reference.
3. 3

   Inspect EPS Fuse and Relay
   Open the engine bay fuse box and locate the EPS fuse (typically 80A) and EPS relay per the fuse box diagram on the lid. Visually inspect fuse for continuity and test with multimeter if necessary. Check relay for proper seating and signs of corrosion.
4. 4

   Check EPS Electrical Connectors
   Inspect the electrical connector at the EPS control module under the dash and the EPS motor connector on the steering column. Check for corrosion, bent pins, moisture intrusion, or loose connections. Ensure connector locks are fully engaged.
5. 5

   Test EPS Motor Voltage Supply
   With battery reconnected and ignition in ON position, use multimeter to verify battery voltage (approximately 12V) is present at the EPS motor connector. Check both power and ground circuits. Voltage drop on ground circuit should be less than 0.1V.
   ⚠Do not probe connector terminals with sharp objects that could damage pins. Use appropriate back-probing tools or breakout box.
6. 6

   Perform Steering Angle Sensor Calibration
   If DTCs indicate steering angle sensor issues, perform calibration procedure using OBD-II scanner with bidirectional controls. Start engine, turn steering wheel fully left, then fully right, then return to center. Follow scanner prompts to complete calibration. Clear codes and verify calibration success.
7. 7

   Reconnect Battery and Test System
   Reconnect negative battery terminal and ensure connection is secure. Start engine and verify EPS warning light on instrument cluster turns off after 3-5 seconds. Turn steering wheel lock-to-lock at idle to verify power assist is functioning properly with no abnormal noises or binding.

Reassembly

1. Ensure all electrical connectors are fully seated and locked
2. Verify EPS fuse and relay are properly installed
3. Confirm battery terminal is tight and corrosion-free
4. Clear any diagnostic trouble codes that were resolved during service

Verification

• Start engine and confirm EPS warning light extinguishes within 5 seconds
• Test steering effort at idle - should be light and smooth in both directions
• Perform test drive and verify power assist functions normally at various speeds
• Re-scan for DTCs to confirm no new codes are present
• Verify steering returns to center properly after turns
• Confirm no abnormal noises from steering column or EPS motor during operation

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