Liebherr rectangular 6 pins diagnostics cable (note: JDC100 is needed to use this cable with the V9 link)

Jaltest JDC551.9 Liebherr Rectangular 6-Pin Diagnostics Cable

The JDC551.9 is a specialized Cojali Jaltest diagnostic cable for Liebherr trucks and buses. Liebherr uses a distinctive rectangular 6-pin diagnostic connector on certain models — this cable provides the physical interface between that connector and the Jaltest diagnostic system, enabling full ECU communication for fault diagnosis and system analysis.

Cable Construction

Unlike most Jaltest specialty cables that run about 11 inches, the JDC551.9 is 1.5 meters (approximately 5 feet) long. This extra length is practical when working around large Liebherr trucks and buses where the diagnostic port may be positioned in a tight or hard-to-reach location. One end features a 21-pin connector that interfaces with the Jaltest system; the other end has the 6-pin rectangular connector that plugs into the Liebherr machine.

Key Specifications

• Part Number: JDC551.9
• Compatible Equipment: Liebherr trucks and buses with rectangular 6-pin diagnostic ports
• Jaltest End Connector: 21-pin
• Equipment Connector: Rectangular 6-pin
• Cable Length: 1.5 meters (approximately 5 feet)
• Jaltest Link Compatibility: V9
• Important Note: JDC100 extension cable required for use with Jaltest V9 Link
• MSRP: 75.00 (Cojali USA 2025)

JDC100 Requirement

This cable requires the JDC100 extension cable to interface with the Jaltest V9 Link. The JDC100 is sold separately. If you are setting up Liebherr coverage from scratch, budget for both the JDC551.9 and the JDC100.

Who Needs This Cable

Liebherr is a major manufacturer of construction machinery, mining equipment, and specialty vehicles with a significant European market presence. Shops serving Liebherr fleets, dealerships, and heavy equipment service centers that use Jaltest diagnostics need this cable for Liebherr truck and bus coverage. At 75, this is a premium specialty cable reflecting the proprietary connector specification.

Why Buy From OEM Diagnostic Tools?

OEM Diagnostic Tools has specialized in professional diagnostic equipment since 2016. Free shipping, genuine Cojali products, and tech support at 866-217-0063 to confirm fitment before you order.

Call 866-217-0063 for quick answers and help!