22AWG 80ºC Custom DB9 Female to 4Pin Male Diagnostic Connector Cable for Automotive Diagnostic System Connection
Product Name |
Custom DB9 Female to 4Pin Male Diagnostic Connector Cable |
Insulated Material |
PVC |
Rated Voltage |
30V |
Conductor |
Copper |
Jacket |
PVC |
Length |
1m/2m/Customized |
Wire Color |
Black/Customized |
Advantages |
Description |
Strong compatibility |
Connects to a variety of diagnostic devices and automotive systems |
Space-saving |
Compact 4-pin design fits into tight spaces |
Durable design |
High-quality connectors ensure long-term reliable use |
Plug and play |
No additional configuration or setup required |
Cost-effective |
More economical than purchasing a dedicated interface |

Specification Item |
Parameter Details |
Connector Type |
DB9 Female to 4Pin Male Diagnostic Connector |
Cable Length |
Usually 1m/2m/3m optional |
Wire Gauge |
22/24/26/28AWG |
Shielding |
With shielding layer (most models) |
Insulation Material |
PVC or other high temperature resistant materials |
Operating Temperature |
-20°C to +70°C |
Rated Voltage |
Usually 30V AC/DC |
Rated Current |
Usually 1A per pin |
Contact Resistance |
<20mΩ |
Insulation Resistance |
>100MΩ |
Withstand Voltage |
500V AC/min |
Plug and Unplug Life |
More than 500 Times |
Color |
Usually Black/Gray /Customized |
1. Product Introduction
DB9 Female to 4Pin Male Diagnostic Connector Cable is a conversion cable used for automotive diagnostics and electronic equipment connection. It converts the standard 9-pin D-sub (DB9) female interface to a 4-pin male diagnostic interface. This cable is often used to connect OBD diagnostic equipment, automotive ECU programmers or other electronic test equipment.
2. Application areas
- Automotive diagnostic system connection
- ECU programming and debugging
- Industrial control equipment interface conversion
- Electronic test equipment connection
- Data acquisition system interface
3. Safety precautions
- Make sure the device is powered off before connecting/disconnecting the cable
- Avoid using in humid environments
- Do not bend or pull the cable excessively
- Regularly check the connector for signs of damage
- Follow the safety guidelines of the device manufacturer
- Store properly when not in use to avoid connector damage
4. Frequently Asked Questions (FAQ)
Q: What is the maximum transmission distance of the cable?
A: The standard length is usually 1-2 meters, and longer distances may cause signal attenuation.
Q: Is hot plugging supported?
A: Hot plugging is not recommended, and the device should be connected/disconnected when it is powered off.
Q: How can I tell if the cable is working properly?
A: You can check connectivity by testing device communication or using a multimeter.
Q: Are all DB9 to 4Pin cables the same?
A: No, the pin definition may vary from manufacturer to manufacturer, and compatibility must be confirmed before purchase.
5. Summary
DB9 Female to 4Pin Male Diagnostic Connector Cable is a practical tool for connecting a variety of diagnostic equipment and electronic systems, with the advantages of strong compatibility and ease of use. Correct selection and use of this cable can greatly improve work efficiency while avoiding the risk of equipment damage.
99.9% oxygen free copper material, copper core, non flammable and safer to use. The outer skin is made of brand new PVC material, which is soft, durable, effectively oxidized, odorless, safe to use, and can be purchased and used with confidence.
Nickel plated plugs are resistant to oxidation, tightly combined and easy to handle, with user-friendly design for easy insertion and removal, making them more user-friendly. The head uses copper plugs that are heat-resistant and flame-retardant, making charging more efficient and stable.
Female plug,made of pure copper wire, can be converted to more electrical equipment. The extended net tail is not easy to break, stable and sturdy, and the interface is not easy to loosen or fall off, so there will be no poor contact.
- Automotive diagnostic system connection
- ECU programming and debugging
- Industrial control equipment interface conversion
- Electronic test equipment connection
- Data acquisition system interface



Lanka Industrial Automation Shanghai Co.,Ltd is an advanced manufacturer integrating research and development, production, sales and service together, We specialize in developing and manufacturing special cables.
The main products are power cords, robot cables, reel cables, flat cables, spiral cables, CE certified flexible cables, data cables, special customized cables, etc. The company has a strong technical research and development team, the core technical team consists of several professional Composed of a team of senior engineers with professional background, the technical team makes full use of profound professional theory and rich practical experience to independently research and develop, constantly penetrate the heart, and the quality is guaranteed.
In 2020, it will obtain the TILVA certification for industrial robot flexible cables from the National Robot Testing and Evaluation Center. Products are widely used in key projects such as industrial robots, CNC machine tools, laser equipment, logistics systems, packaging equipment, lifting systems, lifting equipment, etc. Excellent quality and service have received widespread praise from the industry and customers.
Sample
Give your requirements to us, we recommend the suitable cables for you, samples is free if we have stock, if not, we could customize it, then charging some cost for sample.The samples'fee will return to you when we got your order more than 1000USD.
Usually, samples will provide within 3 days.if you need to customize then we need 1-2 weeks.
Payment
We accept bank transfer, Paypal and West union., if in some other way please check with us.
Warranty
If it is our quality problem then we will afford the freight for you to replace the cables.
Advantages
Production and testing equipment more than 100 sets,
R&D engineers: 12
management teams all have more than ten years; work experience in cable industry.
Packaging
Spiral cable and cable harness are packed in carton, then in wooden pallet.
PVC cable and Pur cables are packed in wooden drum and in wooden box.
We will pack the cable in good condition according to the size.
Delivery
According to customer's choices.Sample usually sent by express. Bulk goods can be sent by air, by sea.
Please contact with us for shipping cost., we have discount with DHL, TNT, UPS, FEDEX and cooperated with shipping agent If you don't have the express account.
Lead time:Normally, 10-20 days
Q 1: I didn't find my needed model in this page.
Answer: Dear Friends, catalog will emailed to you asap when you contact with us. Also, we supply customization service. So, contact us !
Q 2: What's your Minimum Order Quantity?
Answer: Normally, 10pcs for mass production.
Q 3: When can I get the price and what's the validity?
Answer: usually within one day.Validity is 30 days
Q 4: What's your payment terms?
Answer: By T/T 30% in advance ; Balance 70% before shipment.
Q 5: What's your delivery time?
Answer: It depends on whether we just have the stock for your type. Or, it takes about 10 - 30 days for normal orders.
Q 6: What's your package method ?
Answer: Usually, it's cartons, and for big cable, we use wooden drum.
Any other questions please contact with us freely:)