How to rework Benz ECU Test Adapter for Ktag Kess VVDI

Here is the instruction on how to rework (add resistor to) a dead Mercedes-Benz ECU test adapter for Ktag, Kess v2, and VVDI/VVDI2 etc.

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Here are the steps to add resistor.

Use cutting pliers to peel the external black plastic film

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Then remove the black plastic film

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Use the cutting pliers to cut the internal white plastic film mold within PIN4 & PIN5

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A short circuit between PIN4 & PIN5 point after cutting

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Disconnect P4 & P5 point with a soldering iron and pick up the orange and yellow cores/chips

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Solder the orange core to the P4 point and the yellow the P5 point, and solder 120 ohm resistor

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Mercedes Benz ECU test adapter modification completes, ready for use.

 

 

Reference

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A: cable:00=5.0 2C 24AWG black

B: 1007/24AWG color 6

C: blck with the ear chip and blue chip, overmold: 45p pvc black

D: D89P maleovermold: 45 pvc black

 

Pin assignment:

P1 OBDII F                 P2 DB9M                  P3 DC5.5*2.1 with chip

4+5     ——–black————-   1    —————————-

7       ——–brown———–   2

16      ———-red————-   3    —————————-

6       ——-orange———–   4    ————120 ohm resistor

14      ——-yellow————   5    ———–120 ohm resistor

 

Note: 120 ohm resistor between P4 and P5 point

 

Quality symbols:

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