FCM Problem ::FIXED::

[fplucid]

Yes, let's try, I don't mind. Please send instructions.

[Richard L]

open up the FCM...

1. Pick out the brown wire from the 8-core cable
2. Cut it as closely as possible from the circuit board.
3. Cut the "non-red" wire off the solenoid valve pin. Tape it up.
4. Solder the brown wire to the same pin.
5. Now the valve is driven directly from the controller.

[fplucid]

Hi, Richard.
Sorry, had a minute to check everything only yesterday.
If I understood correctly, I had just to connect brown wire with black one which goes to solenoid. Is this correct?


Didn't help. Same situation. Green led on red wire is not active, 100% flow simulation is not working.

I didn't notice any visible damages/burnt parts inside FCM - everything looks good. Probably solenoid itself is broken?
What else to check?

[Richard L]

The soldering is good.

Next we will check the system operations:

1. Unplug the 6mm hose from the FCM. "TST" jumper if theer are pressurised water coming put of the hose. If yes continue to step 2.

2. Re-instate the 6mm hose. Unplug the 4mm hose from the FCM (remove restrictor if there is any). "TST" jumper and see if there are any water coming out of the FCM. If yes, let me know if the gauge shows reading.

I await your results...

[fplucid]

Stuck on step 1. There is water in 6mm water line, but it is not coming out. Think it is left after old kit. Pump in trunk is keeping silent...
One more thing I've noticed: green led on red cable is lit one time in ~30-40 tries (plugging/unplugging), but even when it is lit water is not coming. When I take out the ignition key and put it again, led is not lit again.

[Richard L]

Ok, check the relay in the trunk:

1) take a look at the thin red and blue wire underneath the relay, see if they are connected firmly into the relay base termninals. Those two wires should have 12V across it under "TST" condition.

2) If the wires are OK. check if there is 12V across the pump terminals.

Leave the red cable alone for the time being. Your problem is is thre truck area

[fplucid]

- wiring, ground to trunk is fine (actually it is hard to do something wrong there )
- pump is ok and working (directly put 12V on it, disconnected FCM and water was comming out from thick water line). If I connect thick line to FCM (with FCM "connected" to main module and "S" light lit) and put 12V on pump, no water is comming out from thin water line ("out" of FCM).
- Relay looks fine (to me )
- BUT under "TST" mode NO sygnal is comming to red/blue thin cables - this means that main module doesn't give proper signal.

[Richard L]

Can you remind me if this problem occurred recently or it is a new installation.

[fplucid]

Originally Posted by fplucid

HFS-6 is new, everything is just from the box, everything was sealed. Just purchased it from ebay. Can send you details and seller contact info of the seller if necessary.

Can't make it work for almost 2 month now...

[Richard L]

You took a long time between posts