"raden" wrote in message
...
In message , Adrian Berry
writes
I tested the modureg resistance last night - can't remember the value
but
it
seemed right at the time, definitely not a short.

But did you test at the loom connector that goes into the pcb or at the
gas valve ?


Checked the resistance across the terminals of the solenoid with no loom
connected.

Too awkward to measure the output voltage on the pcb as I didn't want to
disconnect the thermistos which are on the same loom.


NO

remove the molex connector from the pcb, measure the resistance across the
pins which go to the mod. The idea is to test the whole path, there might
be a short to earth caused by a chaffed cable or something silly


OK but if I do that it will read open circuit as only one lead goes from the
driver molex to the mod, one lead goes from the driver molex to the ignition
molex and one lead from the ignition molex to the mod.

On the ignition board, the two molex pins are connected through some realay
contacts which appear to be permanently open.



--
geoff