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Jaltest  |  SKU: JDC203A

Jaltest (JDC203A) | Mercedes 14-pins OBD1 - 16-pins OBD2 Adapter Cable | Commercial and Work Vehicle

Regular price
€133,95 incl.
€110,70 excl.

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The Jaltest JDC203A connects the round 14-pin diagnostic connector of older Mercedes-Benz commercial vehicles to the 16-pin OBD2 input of your Jaltest diagnostic cable. On the vehicle side there is a black round connector with a knurled coupling ring and fourteen pins in a circular pattern. The cable is 28 to 30 cm long and the connection is located in the cab.

With the cable connected, the Jaltest software accesses the control units behind the connector, from the engine control MR and driving control FR to brakes, air suspension and the instrument panel. How many units there are depends on the series: an SK/MK/LK from the nineties has only a fraction of what an Actros has. The cable works with the Jaltest Link V8.1 and V9 and falls under Jaltest CV.

Advantages

✔Accesses the engine control MR with unit pump system and the driving control FR, which coordinates engine, brake and transmission matters.
✔The drivetrain is also covered: gear shift control GS, automatic gear selection AG and clutch control KS.
✔In addition, brakes (ABS 6 and BS), retarder RS, air suspension NR and the service system WS, with which you reset the service counter.
✔Fits all series with the round 14-pin connector, from SK/MK/LK to Actros 2 (MP2), Atego, Axor, Vario, Econic and Unimog.

Points to note

✕The electronics vary widely: which control units and functions are available depends on series and specification.
✕Only for the round 14-pin connector; from Euro IV (October 2005) Actros, Atego and Axor received the 16-pin OBD2 connection, and you do not need this cable.
✕At 28 to 30 cm the cable is short, so you work close to the connector in the cab.
✕Use requires a Jaltest Link with OBD2 diagnostic cable and a licence for Jaltest CV; these are not included with the cable.

Applications and functions

The cable is intended for workshops that read out older Mercedes-Benz trucks, distribution trucks and Unimogs with the Jaltest Link. An Atego distribution truck carries different modules to an Actros tractor unit; the units listed below come from Jaltest's Mercedes-Benz coverage.

Control units you can access

  • MR: Engine control with unit pumps.
  • FR: Driving control.
  • GS, AG and KS: Gear shifting and clutch.
  • ABS 6 and BS: Anti-lock and brake control.
  • RS: Retarder management.
  • NR: Air suspension.
  • INS and WS: Instruments and service.
  • PSM: Programmable body module.
  • ART, SPA and SRS: Distance, lane and airbag.

What you can do

  • Fault codes: Read and clear per system.
  • Measured values: View in figures and graphs.
  • Components: Actuate and test parts.
  • Parameters: Write settings back.
  • Calibrations: Where Jaltest offers a procedure.
  • Maintenance: Resetting the service counter.

How to use it

  1. Check the connector: Locate the round 14-pin connection in the cab.
  2. Connect: Plug the JDC203A in and tighten the coupling ring.
  3. Link pairing: Connect the OBD2 end to the diagnostic cable.
  4. Ignition on: Switch the ignition on, without starting the engine.
  5. Read out: Select Mercedes-Benz, the series and the system.

Compatible vehicles and applications

The connector determines compatibility, not the model. The cable fits Mercedes-Benz commercial vehicles with the round 14-pin diagnostic connection. The series in Jaltest CV coverage are listed below; the final year is October 2005, when the 16-pin OBD2 connection became mandatory for trucks.

Mercedes-Benz:

  • SK / MK / LK: 1989 - 1998.
  • Actros (MP1): 1996 - 2002.
  • Actros 2 (MP2): 2002 - 2005.
  • Atego (1st generation): 1998 - 2005.
  • Axor: 2001 - 2005.
  • Vario: 1996 - 2005.
  • Econic: 1998 - 2005.
  • Unimog U 300 / U 400 / U 500: 2000 - 2005.
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Good to know: The round 14-pin connector is located in the cab and has pins, not sockets. You can recognise it by the serrated coupling ring and the fourteen pins arranged in a circle. Count the pins in the connector in your cab before ordering.

Package contents

  • 1x Jaltest (JDC203A) | Mercedes 14-pin OBD1 - 16-pin OBD2 Adapter Cable | Business and Commercial Vehicles

Technical specifications

General

The brand of the cable or adapter. It often has to match the brand of your diagnostic tool.Brand
Jaltest
The type of product: a separate adapter cable, an adapter without a cable or a complete set.Product type
Adapter cable
The cable set that also includes this cable. If you already own that set, you do not need to buy the cable separately.Part of cable set
Truck and bus cable set

Suitable for

The brand of diagnostic tool the cable works with. A cable for one brand usually does not fit a tester of another brand.Compatible diagnostic tool
  • Jaltest
The version of the Jaltest Link interface the cable fits. Some cables only work with the latest V9.Jaltest Link version
  • Link V8.1
  • Link V9
The Jaltest module required to use the cable. Without the correct licence, the cable will not work.Jaltest software module
  • CV commercial vehicles

Connections

The connector that plugs into the diagnostic port of the vehicle or machine. It must fit exactly.Vehicle-side connector
14-pin OBD1
The connector on the side of your diagnostic tool or interface. Usually a 16-pin OBD2 connector.Tool-side connector
16-pin OBD2

Diagnostic functions

Shows the current sensor readings while the vehicle is running. Useful for tracing faults.View live data
Yes
Allows you to activate components yourself to test whether they are faulty. This saves time when fault finding.Component activation
Yes
Allows you to adjust control unit settings and perform calibrations after repair or replacement.Parameters and calibrations
Yes
Allows you to reset the service message or service interval after maintenance.Service reset
Yes

Size and weight

Reference number
JDC203A

Other specifications

Application
Mercedes-Benz commercial vehicles with round 14-pin diagnostic connector
Length
28 - 30 cm
Control units
MR (engine), FR (driving control), GS, AG and KS (drivetrain), ABS 6 and BS (brakes), RS (retarder), NR (air suspension), INS and WS (instrument panel and maintenance), PSM, ART, SPA and SRS
Segment
Business and Work Vehicle
Part of cable set
Truck and bus cable set (29362)
Required for use
Jaltest Link V8.1 or V9 with OBD2 diagnostic cable, Jaltest software with licence for Jaltest CV