Originally Posted by Montegue
Originally Posted by Rog
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Dave, dare I suggest a possible test that I might have considered whist the pcb was out of the car, if it were mine?

It should be possible to do a heater high/low speed function test along with the heated screen using a link wire on the flying 12 way Dashboard Connector (the one in the pic above).

To test the heater hi/low speed, link the fused (+) supply pin.4 to pins 8 and then 12.

And for the heated screen pin.3 and pin.7

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Cheers Rog, some straightforward bridging tests there I can attempt at the weekend thumbs
Good smile
Whilst in testing mode it might be prudent to do a bit more checking on the car? Probably worth probing the PCB's flying 15 way header connector with a multi-meter. These are the inputs coming into the PCB so may help indicate if there is a fault elsewhere in the car. Maybe worth checking at least your suspect functions.

Say…
Power (1)
Ignition light (13)
Seat belt (8)
Handbrake/fluid (9)
Indicators (2&3)

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Roger
2011 Plus 4