25385-B8800 25385-4Z000 CONTROLLER COOLING FAN For SORENTO 14-15 SANTA FE 3.3L 2013-2018 High quality

Description

25385-B8800 / 25385-4Z000 Cooling Fan Controller is a critical thermal management component for Kia Sorento (2014-2015) and Hyundai Santa Fe (2013-2018 with 3.3L engines). Here’s the detailed technical breakdown:

🔧 Core Specifications

✔ OEM Cross-Reference: 25385-B8800 

• Replaces 25385-2U000 (early version)

• Supercedes to 25385-3S100 (2019+ models)
  ✔ Electrical Ratings:

• 12V DC operation

• 70A max current capacity

• PWM-controlled 3-speed operation

🚗 Precision Fitment Guide

• Kia Sorento (XM; 2014-2015)

• 3.3L Lambda II MPi (G6DC) engine

• Excludes 2.4L Theta II models

• Hyundai Santa Fe (DM; 2013-2018)

• 3.3L Lambda II GDi (G6DH)

• Requires production date after 06/2013

⚠ Failure Pattern Analysis

▸ Common Failure Modes:

• 58% MOSFET burnout (Q1-Q3 components)

• 25% connector corrosion (CP-42 connector)

• 17% PWM signal loss

▸ Diagnostic Trouble Codes:

• P0693 (Fan Control Circuit 1)

• P0480 (Cooling Fan 1 Control Circuit)

• B1676 (Fan PWM Circuit Low)

🔌 Installation Protocol

1. Pre-Installation Checks:

   • Verify main fan relay operation

   • Test fan motor resistance (0.8-1.2Ω at 20°C)

   • Check 12V supply at CP-42 pin 3 (KOEO)

2. Installation Notes:

   • Apply dielectric grease to connector

   • Torque mounting bolts to 8.8-10.2 N·m

   • Clear ECM memory post-installation

3. Post-Installation Tests:

   • Verify fan operation in diagnostic mode:

     • Stage 1: 30% duty cycle

     • Stage 2: 65% duty cycle

     • Stage 3: 90% duty cycle

📜 Technical Service Bulletins

• TSB 18-EM-005H: Requires ECM software update for 2014 Sorento
• Campaign 173: Connector resealing procedure for 2015-16 Santa Fe

⚠ Critical Notes

✖ Not Compatible With:

• 2.0T/2.4L models (uses 25385-3A000)

• Hybrid/electric variants

• Vehicles with auxiliary pusher fans

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