Thread: Won't turn over. Suspect P and N switch

Not LR, but possibly pertinent.

Don't forget to check the wiring loom for the transmission - it's prone to rubbing on the top of the transmission which can cause shorts and interesting problems...

Originally Posted by twr7cx

Don't forget to check the wiring loom for the transmission - it's prone to rubbing on the top of the transmission which can cause shorts and interesting problems...

See post #10

Originally Posted by Tinggu

Oh, I see now!
Crikey Moses!
Any way of testing the XYZ?

Did you miss post #4 or just ignored it? ... cos it's an important detail there

I had a reply ready to go, acknowledging everyones suggestions but lost it. Not my day.
To sum up:
Shack: yes, I have a Nanocom and been all through it and No Faults Found.
sierrafey: Centre console indicators for all selections. So unlikely to be XYZ. I need to check the starter wiring and battery terminals.
Thanks for the XYZ explanation.
M&S lights on dashboard has not been working for a very long time but last time I tried the Mode Switch I could tell it was working.
A couple of years back when trying to find the cause of the various odd electrical faults I exchanged the BCU for another but the same faults remained. Apart from the M&S the fuel guage is totally erratic and the dash does not lights don't work. Sometimes windows open and shut when needed, sometimes they don't.
I need to get underneath and check wiring as suggested but I'm waiting for the gravel to dry out after last night's rain. I'm a whimp.
Appreciate your advice and time. Thanks people.

Don't waste time with the XYZ switch or it's circuit, it has nothing to do with your problem, first remove relay R2 and bridge the perpendicular cavities in the fusebox with a wire, if it cranks the starter circuit on that path is OK, if not there's the isssue somewhere, the spade connector on the solenoid used to get loose but if you hear a loudish click the solenoid is gone.

Originally Posted by sierrafery

Don't waste time with the XYZ switch or it's circuit, it has nothing to do with your problem, first remove relay R2 and bridge the perpendicular cavities in the fusebox with a wire, if it cranks the starter circuit on that path is OK, if not there's the isssue somewhere, the spade connector on the solenoid used to get loose but if you hear a loudish click the solenoid is gone.

That sounds very practical. I will do that tomorrow.

That would rule out the starter circuit only but the fact that you don't have indication on the dash LCD about the selection is part of the issue or just coincidental and keeps the BCU suspect, as you have nanocom go into BCU - Read inputs - Body 2 and se if you get the correct signals from the XYZ switch which should be OK as long as the console lamps are working then go to "outputs body" and test the "crank enable" to see what happens... not easy to diagnose your problem unless it's something more simple than it appears

PS... if no correct XYWZ inputs in the BCU check the "gear switch" inputs in the autobox ECU as well