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update kompressor clutch setup

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shadowm60 2022-01-22 15:47:15 +02:00
parent 15d443a8a3
commit f7cefb3951
1 changed files with 7 additions and 10 deletions
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Hellen-128-Mercedes.md
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@ -60,23 +60,20 @@ This development board is PnP for Mercedes with the 128 Pin ECU (could be used o
### Supercharger Clutch
Guide valid for Rev. B and Rev. C
If you want to control the clutch on a Mercedes supercharger, some hardware modifications are required. The following modifications will result in pin F21 being able to control the supercharger clutch:
* F14 must be removed
* F13, F14, F17 must be removed
* Find R80 on the back of the ECU. It should be a pair of pads for a resistor. Bridge R80 with solder or connect a 0 Ohm Jumper on R80.
* Remove IGBT from Q6
* Solder high-current MOSFET (for example VNB14NV04, VNB14NV0413TR) instead on Q6
todo: see if we really need to remove all from this list.
* F14, F13, F17 removed
* R80 jumper added on back
* change Q6 to VNB14NV04 MOSFET
* in TunerStudio use F17 - IGN 6
* supercharger pin will be F21
todo: document Rev. A howto!
Rev. A board dose not have R80!, for this variant you need to remove the Fuses from the list above and solder a wire instead of placing R80:
todo: <image>
Guide valid for Rev. B and Rev. C
## Solenoid control
By design Rev. a and Rev. b is design to drive the VVT coil. On Rev. c hardware E1, E2, E3 and E4 can all be used as solenoid control, they have internal diods needed for protection.