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It's becoming a tad irksome.
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- talkingcars
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I would replace the battery in the fob, it is a service item at the annual service anyway, and then check all the associated wiring for continuity and voltage.
I would start with the low tension lead to the starter, and proberbly start by replacing the crimp terminal as these are a known weak point.
Home to black Alfa Romeo 159 3.2 V6 Q4 ,green MGF VVC and red MG Maestro T16.
MG - the friendly marque.
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Storm wrote: Okay so I tried taking the relay out and putting a wire over the pins you said but nothing. However did you get the right colours? The two big wires coming in, which I thought would be the starter wires are brown/red and plain brown. Should I bridge over these instead?
You are on the correct relay and wires, bridging the two large wires (brown with brown with the red tracer) bypasses everything and gives a direct feed from F20 straight to the spade terminal on the starter motor solenoid; starter should engage and spin the second you make the contact (make sure it's not in gear).
If you think it's alarm related then replace the relay and connect a ground wire into the black with the white tracer wire (scotch lock in place for the test or push the bared end of the cable into the relay base)
This will bypass the ground signal from the BCU alarm system and allow the engine to crank when you turn the key.
Attached is the wiring diagram for the starting circuit.
Brian.
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Turned out to be a dodgy crimp /spade connector on starter - replaced with a new one and cleaned up terminal everything has been fine since . . . Took 10 minutes and around 5p worth of spade connector.
Hope this helps
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Thanks everyone.
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