This Cummins J1939 9-Pin Male Female Diagnostic Cable with 16Pin Expansion Port is a high-precision communication link designed for heavy-duty vehicle diagnostics, ECU programming, and telematics integration.
Manufactured in our ISO-certified facility, it combines industrial-grade copper conductors, precision-molded connectors, and reinforced strain relief to ensure consistent and reliable data transmission under extreme vibration, temperature, and mechanical stress.
Unlike standard aftermarket harnesses, this cable is engineered for OEM-level reliability, supporting SAE J1939, J1708, and CAN protocols across Cummins, Freightliner, Volvo, CAT, and Mack systems. The additional 16Pin expansion port allows seamless integration with telematics modules, data logging units, or custom in-vehicle communication networks, making it ideal for fleet technicians and engineers demanding both performance and flexibility.
Cummins J1939 Diagnostic Cable Highlights
- Dual 9-Pin Deutsch connectors (male & female) provide secure, stable diagnostic connections.
- 16Pin housing interface enables secondary system integration or signal branchin
- Fully molded body with reinforced strain relief protects against oil, heat, and mechanical impact.
- High-purity copper construction ensures superior conductivity and signal integrity
- Tested for rugged environments — vibration, oil exposure, and heat up to 120°C.
- Customizable cable length, pin configuration, AWG, and color available upon request.
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Key Features
| Feature | Specification |
| Connector Type | 9-Pin Male + 9-Pin Female + 16Pin Housing |
| Protocol Support | SAE J1939 / J1708 / CAN |
| Compatible Brands | Cummins, Freightliner, Volvo, CAT, Mack |
| Cable Length | Customizable (1.5m / 3m / 5m / per client request) |
| Jacket Material | Flexible PVC, oil & abrasion resistant |
| Wire Gauge (AWG) | Adjustable per design requirement |
| Quality Certification | ISO 9001, ISO 14001, IATF16949, CE, UL, RoHS, REACH |
| Testing | 100% continuity, insulation, and vibration-tested |
| OEM / ODM Support | Custom logo, pinout, color |
Compatibility & Applications
This cable works seamlessly with:
- Cummins INLINE 5 / 6 / 7 diagnostic adapters
- Heavy-duty trucks using SAE J1939 or J1708 communication protocols
- ECU programming, data loggers, and fleet diagnostic platforms
- Telematics or reprogramming systems requiring stable CAN communication
Applications include:
- Heavy-duty vehicle diagnostics and ECU programming
- Fleet management and maintenance systems
- Construction and agricultural machinery interface
- Industrial J1939 / CAN communication and data collection
- OEM diagnostic or reprogramming tool development
Why Choose Us
🏭 20+ Years Real Factory
We are a true manufacturer with over two decades of experience in automotive connectors and diagnostic cables — not a trading company.
⚙️ In-House OEM Diagnostic Cable Customization
From mold design to cable assembly, every process is completed internally. We support custom logos, pin layouts, lengths, and colors to meet your unique requirements.
🧪 100% Tested, No Exception
Every cable undergoes full electrical, mechanical, and visual inspection before shipment, ensuring reliability and performance from day one.
🌍 Certified Manufacturing System
Production is ISO 9001, ISO 14001, IATF16949, CE, UL, RoHS, and REACH certified to meet international quality standards.
🔒 Engineered for Durability
Full-mold connectors, reinforced shielding, and superior strain relief make these cables ideal for harsh industrial and off-road environments.
🧰 Technical & Engineering Support
Our engineers provide custom pinout diagrams, wiring optimization, and connector selection to ensure perfect compatibility with your system.
Trusted by Industry Leaders
- Over 10,000 cables delivered to workshops worldwide.
- “Their custom cables solved our fleet’s data logging challenges.” – Engineering Manager, European Truck OEM
- Recognized by multiple heavy-duty truck service providers and telematics integrators.
Optional: add customer logos here for visual proof.
FAQ
Q1: Which vehicles can use this J1939 diagnostic cable?
Most heavy-duty vehicles using SAE J1939 / J1708 protocols, including Cummins, Freightliner, Volvo, CAT, and Mack.
Q2: Can I customize cable length or pin configuration?
Yes, full OEM customization is available for length, connector style, color, and wiring layout.
Q3: What’s the function of the 16Pin housing connector?
It serves as an auxiliary interface for telematics, ECU extensions, or secondary diagnostic systems.
Q4: Is this cable suitable for ECU reprogramming?
Absolutely. It provides stable signal transmission for diagnostics, ECU programming, and firmware updates.
Q5: Do your cables comply with international standards?
Yes. All products meet ISO, CE, UL, RoHS, and REACH standards.
Q6: How do you ensure quality before shipping?
Each cable passes 100% continuity, insulation, and vibration testing.
Q7: Can I order small quantities or samples?
Yes, prototype and small-quantity orders are supported.
Q8: Can your engineers provide wiring support?
Yes, detailed wiring diagrams and pin mapping assistance are available.
Q9: What’s your normal lead time?
Typically 7–15 working days, depending on customization level and order size.
Q10: Are these cables resistant to oil and heat?
Yes. The PVC jacket is oil-proof and heat-resistant up to 120°C.
Q11: What is your warranty policy?
We offer a 12-month warranty against manufacturing defects.
Q12: Can I get a sample for testing before bulk order?
Yes, we encourage sample testing. Contact us for a sample program.
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