Just repaired the wash wipe module for my 2006 H2.

Job involved de-soldering and removing the PCB, removing a relay, repairing some broken tracks and replacing an open-circuit resistor.

Got loads of pics which might be useful to you.

I'll post a couple anyway.

 

Just a bit of info on the module.

It is a PIC based microprocessor PCB, surface mounted components both sides with 4-off single pole change-over relays. It seems the module suffered from corrosion under one of the relays causing the demise of a resistor.

The components have no circuit references but I'll post details of the work I did to resolve the issue.

 

These are the notes I made to help repair the module.

Note my component references are completely arbitrary, it was my intention to make a circuit diagram based on this info, but ran out of time.