Jaltest (JDC505A) | CAT/Perkins 9-pins OBD - 16-pins OBD2 Adapter Cable | Internal combustion engine
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Warranty directly via AsTools
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2 years warranty on all products
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Easy returns
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The Jaltest JDC505A connects the 9-pin diagnostic connector of Caterpillar and Perkins engines to the 16-pin OBD2 input of your Jaltest diagnostic cable. On the machine side is a round bayonet connector with a black housing, a light grey coupling ring and a red-brown insert with nine female sockets, eight in a ring and one in the centre. Caterpillar and Perkins use the same connector, so one cable serves both engine manufacturers. The cable is 28 to 30 cm long.
The cable passes the engine communication lines through to the Jaltest Link. This allows the Jaltest software to reach the proprietary data lines CDL on Caterpillar and PDL on Perkins, the open J1939 bus, the older SAE J1708 line and the EMCP control for power generation. The J1939 control unit of Caterpillar engines has no functions in the coverage table; the usable diagnostics are on the CDL. The cable falls under Jaltest AGV, OHW and Marine.
ADVANTAGES
POINTS TO NOTE
Applications and functions
The cable is intended for workshops that read out Caterpillar and Perkins engines in machines, vessels and generator sets. Jaltest lists the control units per engine type and per data line, so what you receive differs considerably per unit. The units below come from the CAT and Perkins coverage.
Control units you can access
- CDL (Caterpillar): Proprietary line, fault codes.
- PDL (Perkins): Proprietary Perkins line.
- J1939: Functions on Perkins only.
- SAE J1708: Older line, incl. CAT 3406.
- EMCP: Power generation, Caterpillar.
What you can do
- Fault codes: Read and clear, with descriptions.
- Measured values: View live, with alarm limits.
- Maintenance: On some Perkins engines, incl. 1206E.
- Report: Record maintenance work.
How to use it
- Check the connector: Look for the round connector with a red-brown insert.
- Connect: Plug the JDC505A on and tighten the bayonet.
- Linking the Link: Connect the OBD2 side to the Jaltest Link.
- Ignition on: Switch the ignition on without starting the engine.
- Reading out: Select Caterpillar or Perkins and the engine type.
Compatible vehicles and applications
The engine is decisive, not the machine. This cable fits any Caterpillar or Perkins engine with the 9-pin connector; these engines are fitted by dozens of machine manufacturers. Jaltest covers the series below; the red-brown insert shows whether your engine has this connector.
Caterpillar:
- 3000 series: 3054, 3054B, 3056, 3126, 3126B, 3176, 3176C, 3196, 3406, 3406E, 3408, 3408E, 3412, 3412E and 3456.
- 3500 and 3600 series: 3508, 3512, 3516 and the B, C and E variants, plus 3606, 3608, 3612 and 3616.
- C and G series: The C-series engines and the gas engines of the G-series.
Perkins:
- Compact: 402D, 403D, 403F, 403J, 404D, 404F, 404J, 854E, 854F, 904D and 904J.
- 1100 and 1200 series: 1103C/D, 1104A/C/D, 1106D, 1204E/F/J, 1206E/F/J and 1706J.
- Heavy duty: 1306, 1506, 1506D, 2006, 2206, 2306, 2506, 2806, 3008 and 3012.
Package contents
- 1x Jaltest (JDC505A) | CAT/Perkins 9-pin OBD - 16-pin OBD2 Adapter Cable | Internal Combustion Engine
Technical specifications
General
- The manufacturer of the cable. Jaltest cables work with Jaltest diagnostic equipment.Brand
- Jaltest (Cojali)
- The type of cable. A diagnostic cable connects to the diagnostic socket, a measuring cable tests an individual component.Cable type
- Adapter cable
- The Jaltest software package the cable belongs to. A licence for that module is required to use the cable.Jaltest software module
- AGV agriculture
- OHW construction and off-road
- Marine vessels
Connections
- The version of the Jaltest Link diagnostic interface the cable fits. Not every cable works with every version.Compatible Jaltest Link
- Jaltest Link V8.1
- Jaltest Link V9
- The connector on the diagnostic device side. It must fit your interface or diagnostic cable.Interface-side connector
- 16-pin OBD2
- The length of the cable. A longer cable allows more room to work.Cable length
- 28 to 30 cm
Diagnostics
- Whether fault codes can be cleared as well as read. Some systems only allow reading.Clear fault codes
- Yes
- Whether the current sensor values can be viewed while the vehicle is running. Useful for tracing a fault.View live data
- Yes
Usage
- Reference number
- JDC505A
- Required for use
- Jaltest Link V8.1 or V9
Other specifications
- Application
- CAT and Perkins engines with 9-pin diagnostic connector
- Machine-side connector
- 9-pin round bayonet connector with grey coupling ring and red-brown insert, female
- Control units
- CDL (Caterpillar), PDL (Perkins), J1939, SAE J1708 and EMCP
- Jaltest module
- Jaltest AGV (agricultural), Jaltest OHW (construction & off-road machinery) and Jaltest Marine (vessels)
- Part of cable set
- AGV cable set (70002003), complete OHW cable set (70002026), basic OHW cable set (70002030) and Marine cable set for stationary engines (70002006)

To ensure you always have access to the latest software updates and releases for your Jaltest device, it's important that you register the correct distributor.
Only the authorized distributor can perform new software installations and updates. When you designate us as your distributor, we can handle this for you and guarantee that your device stays current and runs smoothly.
How does it work?
-
Download and complete the change form
You can find the form as a PDF file here. -
Send us the completed form
You can easily do this by email to support@astools.eu. -
We'll take care of the rest
With the form, we can notify Jaltest of the change and officially register you as our customer.






