How To

Work areas on the top side of the ECU are identified in the image. You will need to carefully clear away the potting from these areas to gain access to the chip and the areas that need jumpers.

The top of the potting was wetted with 90% IPA as this will not only clean but allow you to see through the potting. SMEC boards stay a bit cleaner due to the power board above it catching most of the dirt and dust.

You can see the cleared top work areas.

In the area just above the chip, you need to clear out the lower edge pins. A jumper needs to be attached to the bottom row 1st pin from the left. You can see the additional potting cleared from that area.

The other two areas will get jumper wires attached.

Remove the factory chip, extract any pins or excess solder. Clean area with 90% IPA and acid brush and/or cotton swabs.

Here in the pic, the brown wire is landed on the location for A15. The blue wire is landed on the location of PRG.

Here you can see the white wire landed on the location of RW. It needs to be on the first pin from the left on the bottom row of the chip just above the chip you remove.

Cleaned potting from the bottom side of the chip pins, and at the Zener diode that needs to be bypassed.

Bypass zener diode as shown.

Solder the MPFlash module to the ECU board. Solder the pins from the back side of the ECU board.

If converting from a socketed SMEC using replaceable chips, you can mount the MPFlash module onto the socket. This however will be too tall for the Power module to be mounted back in the ECU case unless spacers are used. These spacers can be 3D printed, and we are working with a member to test them.

**Also, if you are modifying a previously socketed ECU, carefully check to be sure the socket is for the same size pins as on the MPFlash module.

Top view of MPFlash mounted with jumpers connected.

Pictured is a prototype MPFlash with MultiPlay wire harness connector.

Test ECU now, to check for proper operation. If good, then use protective coating on the work areas. I used a silicone conformal coating. If ECU has issues, troubleshoot and repair. Don't use coating if ECU has issues in case you need to do any solder rework.

Use protective conformal coating on the work areas. This will protect the components and solder joints from corrosion and the elements.

Use protective conformal coating on the work areas. This will protect the components and solder joints from corrosion and the elements.

Seal up any areas where potting has been removed. Take care not to go outside the space of the factory potting, or you may have issues getting the board back into the case.

Pictured: Front of board, MPFlash without socket.

Seal up any areas where potting has been removed. Take care not to go outside the space of the factory potting, or you may have issues getting the board back into the case.

Back of board, without socket.

Test fit in ECU housing.

Here the logic board was a previously socketed one, so take care not to add additional height to the assembly. Spacers are needed to be sure the power board is not in contact with the MPFlash module.