Weichai WISE15 ECU 1003540781 Original Engine Control Unit – 3 Key Features: Factory Calibration, Euro 5/6 Compatibility, 12-Month Warranty

Product Overview

We supply the original Weichai WISE15C engine control unit ECU 1003540781, designed for high-performance diesel engine management applications on heavy-duty trucks, construction machinery and commercial vehicles.

As a professional diesel electronic control system supplier, we provide ECU solutions for Weichai WP series engines with strict quality inspection, professional calibration testing and worldwide export experience.

This ECU module is developed for Weichai WP8, WP10H, WP12H and WP13H Euro 5 / Euro 6 diesel engines. With factory-programmed control software, it accurately manages fuel injection timing, injection quantity, turbocharger boost pressure, EGR operation, SCR urea system and DPF regeneration strategy.

Compared with traditional engine computers, the WISE15C ECU provides faster signal processing, more precise fuel control and stronger environmental adaptability, helping heavy-duty engines maintain stable power output and fuel efficiency under demanding working conditions.

Product Highlights

1. Original WISE15C ECU with Factory Calibration Data

Our Weichai ECU 1003540781 is programmed with original factory calibration parameters to ensure accurate communication between ECU, fuel injection system and emission control components.

It controls:

• Fuel injection timing
• Fuel injection quantity
• Common rail pressure regulation
• Turbocharger boost control
• EGR valve operation
• SCR after-treatment system
• DPF regeneration process

The pre-calibrated software helps restore original engine performance without unnecessary parameter adjustment.

2. Heavy-Duty Design for Harsh Working Conditions

Designed for commercial vehicles and construction machinery, this ECU uses a sealed die-cast aluminum housing structure.

The reinforced housing provides excellent protection against:

• High engine compartment temperature
• Strong vehicle vibration
• Dust contamination
• Moisture exposure
• Long-distance transportation conditions

Four shock-absorbing mounting points improve stability during continuous heavy-load operation.

It is suitable for:

• Heavy trucks
• Mining vehicles
• Construction machinery
• Engineering equipment
• Fleet transportation vehicles

3. Fully Tested Before Shipment – Reliable Replacement Solution

To reduce installation risks for overseas repair shops, every ECU module from our factory passes complete testing before delivery.

Our testing process includes:

• ECU communication test
• Power supply test
• CAN communication inspection
• Software verification
• Data writing confirmation
• Functional simulation test

We provide:

• Brand New ECU
• Professionally Remanufactured ECU
• Tested Replacement ECU

All products include a 12-month global warranty.

Technical Specifications

Compatible Applications

This ECU is widely used for Weichai-powered commercial vehicles and machinery applications, including:

• Heavy-duty trucks
• Engineering vehicles
• Mining transport vehicles
• Construction equipment
• Fleet service vehicles

Typical engine applications:

• Weichai WP8
• Weichai WP10H
• Weichai WP12H
• Weichai WP13H

Common Problems Solved by Our WISE15 ECU

A failed engine ECU may cause:

• Engine crank but no start
• Sudden power limitation
• Speed restriction
• Excessive black smoke
• Abnormal fuel consumption
• DPF regeneration failure
• SCR system fault
• CAN communication error
• Permanent engine warning light

After correct replacement and programming verification, our ECU helps restore:

✓ Original engine torque
✓ Stable fuel injection control
✓ Normal emission system operation
✓ Reliable vehicle performance

Why Choose Us as Your Diesel ECU Supplier?

We are not only an ECU trading company. We are a professional supplier specializing in diesel engine electronic control systems, ECU testing and remanufacturing solutions.

Our advantages include:

Professional ECU Testing Capability

We operate dedicated ECU testing equipment and electronic calibration facilities.

Every remanufactured ECU is processed through:

1. Complete disassembly inspection
2. Ultrasonic circuit cleaning
3. Electronic component inspection
4. Defective component replacement
5. Software flashing
6. Final functional testing

Our quality management follows strict industrial inspection procedures to ensure stable performance.

Large Stock of Weichai ECU Models

We maintain inventory for popular Chinese diesel engine control systems, including:

• Weichai WISE10A ECU
• Weichai WISE10B ECU
• Weichai WISE13 ECU
• Weichai WISE15 ECU
• Bosch EDC ECU
• SCR DCU Control Units

This allows us to provide fast response for overseas repair projects.

Flexible B2B Supply Service

We support:

• Diesel repair workshops
• Heavy truck maintenance companies
• Construction machinery service centers
• Fleet operators
• Commercial vehicle parts wholesalers

Our service advantages:

✓ Factory-direct pricing
✓ Flexible MOQ
✓ Bulk order discounts
✓ Neutral export packaging
✓ Worldwide air and sea shipping
✓ Technical matching support

Frequently Asked Questions (FAQ)

1. How can I confirm whether ECU 1003540781 fits my engine?

Please send us your original ECU part number, engine model, vehicle information or ECU photos.

Our engineering team will check compatibility before shipment to avoid incorrect replacement.

2. Is this ECU new or remanufactured?

We supply both:

• Original brand-new ECU
• Professional tested remanufactured ECU

All units are inspected and tested before delivery.

3. Does the ECU require programming after installation?

Most units are supplied with matching calibration data.

However, ECU programming requirements depend on the engine configuration and vehicle system.

Our technical team can provide installation guidance according to your application.

4. Do you provide warranty?

Yes.

All ECU products include a 12-month global warranty.

If any quality issue occurs during normal operation, we provide technical support and replacement solutions.

5. Can you supply mixed models in one order?

Yes.

We support mixed ECU models and flexible MOQ requirements for distributors and repair companies.

6. Do you ship worldwide?

Yes.

We export diesel engine ECU modules to customers worldwide, including:

• Southeast Asia
• Middle East
• Africa
• South America
• Europe

We provide secure packaging and professional international logistics solutions.

Contact Our ECU Engineers

If you are looking for a reliable Weichai ECU supplier, please send your original ECU number, engine model or product photos.

Our engineering team will help you confirm the correct replacement ECU and provide professional technical support.

We are committed to becoming your long-term partner for diesel engine electronic control parts, offering stable quality, competitive pricing and reliable global supply.