Power Steering Pump Pulley

This procedure addresses replacement or service of the power steering pump pulley on a 2016-2021 Honda Civic 1.5L Turbo. Note: This vehicle uses Electric Power Steering (EPS) and has no hydraulic pump or pulley.

Warnings

Tools required

Parts

• EPS motor connector terminals (if corroded) × 1 — Use OEM specification

Preparation

1. Verify the vehicle actually has Electric Power Steering by confirming no hydraulic reservoir under the hood
2. Retrieve any stored diagnostic trouble codes (DTCs) related to EPS system using OBD-II scanner
3. Park vehicle on level ground and engage parking brake
4. Turn ignition to OFF position
5. Disconnect negative battery terminal and wait 3 minutes for system capacitors to discharge

Procedure

1. 1

   Confirm Electric Power Steering Configuration
   Visually inspect the engine bay for absence of power steering fluid reservoir and hydraulic pump. The 1.5L turbo Civic uses an electric motor mounted on the steering column or rack, not a belt-driven hydraulic pump. Locate the EPS motor assembly (typically at base of steering column inside cabin or on steering rack under vehicle).
2. 2

   Scan for EPS Diagnostic Codes
   Connect OBD-II scanner and retrieve any codes in the EPS system. Common codes include C1611 (EPS motor malfunction), C1614 (torque sensor), or U0401 (communication errors). Document all codes before clearing. If pulley noise was the concern, investigate serpentine belt system components (alternator, A/C compressor, water pump, tensioner) instead.
3. 3

   Inspect EPS Electrical Connections
   Locate the EPS motor connector. On most Civic models, this is accessible from inside the vehicle after removing the lower steering column cover panels. Inspect connector for corrosion, bent pins, or water intrusion. Clean terminals with electrical contact cleaner if corrosion is present.
4. 4

   Test EPS Motor Circuit Resistance
   With battery disconnected and EPS motor connector unplugged, use digital multimeter to measure resistance across EPS motor terminals. Typical resistance should be 0.5-2.0 ohms depending on motor design. Consult Honda service manual for exact specification. Infinite resistance indicates open circuit (failed motor). Near-zero resistance may indicate short circuit.
5. 5

   Inspect Serpentine Belt System
   If the original concern was noise from the front of the engine, inspect the serpentine belt, automatic tensioner, alternator pulley, A/C compressor pulley, and crankshaft pulley for wear, misalignment, or bearing noise. Rotate each pulley by hand with engine off to feel for roughness or excessive play. The 1.5L turbo has no power steering pump pulley to inspect.
6. 6

   Verify Steering Rack Mounting
   If steering noise occurs during turning, raise vehicle safely and inspect steering rack mounting bolts for proper torque and condition. Loose rack mounts can cause clunking or knocking sounds often misdiagnosed as pump issues. Check for torn steering rack boots or leaking grease.
7. 7

   Reconnect Battery and Clear Codes
   Reconnect battery negative terminal. Turn ignition to ON position without starting engine. The EPS warning light should illuminate briefly then extinguish. Start engine and verify EPS warning light remains off. Clear any temporary codes that were set during battery disconnection.

Reassembly

1. Reinstall any trim panels or covers removed during inspection
2. Ensure all electrical connectors are fully seated and locked
3. Verify battery terminal is tight and corrosion-free
4. Reset steering angle sensor through OBD-II scanner if EPS motor or components were replaced

Verification

• Start engine and turn steering wheel lock-to-lock at idle - verify smooth power assist with no warning lights
• Test drive vehicle at various speeds and verify consistent steering assist
• Confirm no EPS warning lights illuminate on instrument cluster
• Re-scan for DTCs to ensure no new codes are present
• If original concern was noise, verify the actual source has been identified and addressed in the serpentine belt system or steering mechanical components

Related trouble codes on this vehicle

Codes that commonly send this job to the bay — tap one for symptoms, causes, and diagnostic steps.

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