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Quality 49-14090 EFC4914090 Speed Control Unit Controller for Generator factory
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Quality 49-14090 EFC4914090 Speed Control Unit Controller for Generator factory
Quality 49-14090 EFC4914090 Speed Control Unit Controller for Generator factory
Quality 49-14090 EFC4914090 Speed Control Unit Controller for Generator factory
Quality 49-14090 EFC4914090 Speed Control Unit Controller for Generator factory
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49-14090 EFC4914090 Speed Control Unit Controller for Generator

Brand Name: Jiajue
Model Number: 49-14090
Place of Origin: CHINA
Minimum Order Quantity: 1pc
Price: $800/pc
Supply Ability: 100PCS/MONTH

Product Details


Product Name: Speed Control Unit Material: Steel
Place Of Origin: Guangdong,China MOQ: 1
OEM: Support
Highlight

Generator speed control unit

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EFC4914090 controller for generator

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ECU speed controller with warranty

Product Description

Product Overview
49-14090 EFC4914090 Speed Control Unit Controller for Generator
Product Specifications
Product Name Speed Control Unit
Part Number 49-14090
Brand Name JIAJUE
Condition New
Availability Rich Stock
Approximate Weight 1KG
Size (per unit) 20cm x 20cm x 10cm
Delivery Time Usually delivered within 1-3 days after payment
Product Images
Speed control unit front view showing connectors and components Speed control unit side view with technical specifications Speed control unit rear view displaying mounting points Speed control unit top view showing internal circuitry
Installation Information
ECM Installation Time on Machine
Physical Installation: 15-30 minutes. The unit is typically secured by 4 bolts on the cool side of the engine.
Programming & Testing: 30-60 minutes.
Pro Tip: If the ECM is pre-programmed by us based on your machine's serial number, it is essentially "Plug & Play." If not, you will need an ET (Electronic Technician) tool to flash the software, which takes additional time. We recommend professional installation to ensure correct parameter synchronization.
ECM Fault Diagnosis
Determining ECM Fault and Replacement Need
  • The ET diagnostic tool cannot communicate with the ECM, or it displays a "Module Not Responding" error. This is a critical sign of internal hardware failure.
  • Active fault codes related to internal memory (EEPROM) or voltage reference issues that persist after checking the wiring harness often indicate ECM failure.
  • Sudden engine stalling, severe power loss (Limp Mode), or persistent misfiring (missing injector driver signals) after sensors and harnesses have been ruled out.
  • Visible signs of overheating (burning smell), water ingress, corrosion, or broken pins on the connector headers.
Step-by-Step Testing Guide
Pro-Tip: HEUI (Hydraulic Electronic Unit Injection) systems are extremely sensitive to contamination. A single speck of dust can cause premature failure.
  1. Prepare: Ensure the excavator is turned off and safely secured. Disconnect the battery to avoid electrical accidents.
  2. Inspect: Check the ECU for physical damage or loose connections.
  3. Connect Diagnostic Tool: Use a diagnostic tool recommended by the excavator's manufacturer. Connect it to the ECU according to the tool's instructions.
  4. Read Codes: Use the diagnostic tool to read any error codes (DTCs) stored in the ECU. These codes indicate potential problems with the ECU or connected systems.
  5. Check Live Data: View live data parameters such as sensor readings and system voltages. Ensure they are within normal ranges.
  6. Functional Tests: If possible, perform tests to activate components or simulate sensor inputs. Verify that the ECU responds correctly without delays or errors.
  7. Reset (if needed): Reset the ECU if recommended by the manufacturer, especially after repairs or replacements.
  8. Document: Keep a record of all tests, codes, and results for future reference.
Quick Buyer Checklist
Before replacing the ECM, always check the fuses, main relays, and ground connections. In many cases, a faulty ground wire or low battery voltage mimics an ECM failure.
Payment & Shipping Information
Payment Methods: T/T, L/C, PayPal, etc.
Stock Availability: Rich stock available.
Order Shipping: When the goods ship, we will share the tracking number. For sea or air freight, we can provide the bill of lading.
Company & Exhibition
JIAJUE manufacturing facilities and company profile showing production area Product exhibition display showing various generator components Product exhibition display with organized component layout and technical specifications
Packaging & Shipping
Professional product packaging with protective materials and secure boxing Shipping and logistics process with warehouse operations and inventory management
Related Products
Related excavator accessory product for compatible models and applications

Product Highlights

Product Overview 49-14090 EFC4914090 Speed Control Unit Controller for Generator Product Specifications Product Name Speed Control Unit Part Number 49-14090 Brand Name JIAJUE Condition New Availability Rich Stock Approximate Weight 1KG Size (per unit) 20cm x 20cm x 10cm Delivery Time Usually ...

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