MFRU ?

[dobbo]

Went to the car today and unimmobised it (99-plate S1 with Bernard Scouse Audi conversion running Emerald K3 ECU).  Dashboard, etc did their normal things.  Turned the ignition on and the fuel pump primed as expected (fast then slow, then stopped once pressurised).

Turned to crank but nothing.  No relay click, no chattering, nothing.

Car was fine when last driven and has been on the Optimate 4 since then (~3weeks).  All Optimate and dashboard LEDs are normal.  Headlights are bright.

Looking at late S1 wiring diagrams (section MN1 Sheet 1 etc), it seems that the immobiliser, the alarm or MFRU are probably the only possible causes.  There's no fuse for the starter motor itself.  It can't be the fuses for either the ignition or MRFU, nor the inertia switch, as any of these would stop the fuel pump priming.

Anyone got a spare MRFU I could borrow to check ?  Would prefer to eliminate that before looking at the immobiliser, unless anyone thinks the immobiliser is more likely ?

[Martin R]

What Alarm unit is it Chris? The Cobra which is used on the early S2 and some S1 IIRC cuts the fuel pump and the starter motor circuit?

[dobbo]

It's sorted now. The charger was wrongly connected ! No idea how as it was ok last time it was on the charger.

[Steve J]

Age catching up with you Chris?

[dobbo]

Unfortunately not. It was fine last time and I haven't been in the front compartment for anything in months. Can only assume it was a mistake at Guglielmi's when they had it for some work.

[timbo]

So more SNAFU than MRFU then..?

[Steve J]

For those confused.

Situation Normal All F***ed Up. 

Got to be down with the kids and their acronyms.