Hitachi diagnostics cable (note: JDC100 is needed to use this cable with the V9 link)

Jaltest JDC535.9 - Hitachi Heavy Equipment Diagnostics Cable

The Jaltest JDC535.9 is a genuine Cojali 6-pin diagnostic cable for Hitachi heavy construction equipment. Hitachi Construction Machinery is a major global manufacturer of excavators, wheel loaders, and other construction machinery — and their equipment is widely found on North American job sites. This cable connects the Jaltest V9 Link to the Hitachi diagnostic port, enabling the Jaltest OHW software to access fault codes, live data, and supported calibration functions on Hitachi machines.

Important note: The JDC535.9 requires the JDC100 Extension Cable (SUBD-26 + Jack) when used with the Jaltest Link V9. This is specified directly in the Jaltest 2025 Pricelist for this part number. Budget for the JDC100 (00) as a required companion if you do not already have it.

What This Cable Does

The JDC535.9 provides a 6-pin connection from the Jaltest Link to the diagnostic port on Hitachi heavy equipment. The cable enables Jaltest OHW software communication for diagnostic work on Hitachi excavators and other construction machinery. The 6-pin connector interfaces with Hitachi's native diagnostic port, giving technicians software-level access to the machine's electronics.

• Compatible brand: Hitachi heavy construction equipment (6-pin diagnostic port models)
• Typical applications: Hitachi excavators (ZX series and others), wheel loaders, and other Hitachi construction machinery
• Connector type: 6-pin Hitachi diagnostic connector
• IMPORTANT — JDC100 required: The JDC100 Extension Cable (SUBD-26 + Jack) must be used with this cable when connecting to the Jaltest Link V9. This is a manufacturer-specified requirement.
• Cable length: 11 inches
• Compatible Jaltest modules: Jaltest OHW (Off-Highway/Construction Equipment)
• The '.9' designation indicates Jaltest Link V9 compatibility
• Genuine Cojali product
• Listed in Jaltest 2025 Pricelist: Part number JDC535.9, MSRP 40.00

The JDC100 Requirement — What You Need to Know

Several Jaltest cables in the off-highway lineup require the JDC100 Extension Cable when used with the V9 Link. This is because the V9 Link's form factor requires an adapter to route signals correctly to certain proprietary connectors. The JDC100 (MSRP 00) is a one-time purchase that stays in your cable kit and works with all cables that require it. If you are ordering the JDC535.9 for V9 Link use, add the JDC100 to your order — or call us to confirm you already have it.

Hitachi Excavator Coverage

Hitachi's ZX (Zaxis) excavator series is the most common Hitachi equipment you will encounter in North America, spanning from compact mini-excavators (ZX17U through ZX85USB) to large production excavators (ZX350 through ZX690). The JDC535.9 covers Hitachi equipment with the standard 6-pin diagnostic port. For Hitachi equipment powered by Isuzu engines specifically, there are separate cables (JDC560A9 for 6-pin Isuzu, JDC561A9 for 8-pin Isuzu) — this distinction matters because some Hitachi machines use an Isuzu-specific diagnostic port rather than the Hitachi port.

Diagnostic Capabilities With Jaltest OHW

With the JDC535.9 (and JDC100) connected and the Jaltest OHW license active:

• Fault code reading and clearing across Hitachi equipment ECUs
• Live parameter monitoring — hydraulic pressures, engine data, sensor outputs
• DPF regeneration and aftertreatment resets on emissions-equipped Hitachi machines
• Hydraulic system calibrations and adjustments supported by Jaltest
• System checks and functional tests

Technical Details

• SKU / Part Number: JDC535.9
• Connector type: 6-pin Hitachi
• Cable length: 11 inches
• Required companion: JDC100 Extension Cable (SUBD-26 + Jack) — required for V9 Link use
• Manufacturer: Cojali (Jaltest)
• Compatible Software: Jaltest OHW (active license required)
• Compatible Link Version: V9 (.9 designation)
• Price (2025 Pricelist): 40.00

Why Buy From OEM Diagnostic Tools?

We have specialized in Jaltest since 2016. Before ordering the JDC535.9, call us at 866-217-0063 — we will confirm the JDC100 requirement for your setup and make sure you have everything needed to get connected on the first try. We stock the full Cojali OHW cable lineup and can help you identify any other cables needed for your Hitachi fleet. Free shipping, full warranty, no surprises.

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