P38A CDL issue

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Flossie said:
OK. Just checked them switches again. Right key switch changes state to ground from 12v but left switch stays at 12v.
I do struggle to get the lead into the car end, bad back and knees don't help. Annoyingly the gearbox fan runs constantly when in diagnosis mode, that's a new thing! Pleasingly the fob is still working.
Click to expand...
So, as only one switch changes state is that correct? The other needs constant 12v? All doors lock and unlock off the fob and the key now so if that constant 12v is not correct then something shouldn't be working??
I have two issues connected to the doors though , osr knob and occasional but getting more frequent is the door ajar nsf isn't coming up on the message centre or the nano and thus no interior light. I'm guessing that has nowt to do with that left key switch not changing from 12v to ground though.
Happy to be corrected!
 
pwood999 said:
It's specifically not recommended to connect the car end of the Nanocom first, because you can cause issues when plugging in the 15pin connector (easy to short things). BBS says to always connect the cable to Nano first, and then plug into the diag port.

I'm considering extending the diag port to a more accessible location - maybe inside the centre cubby box.
Click to expand...
This is the position I have to get into to plug the lead in.
Screenshot_20241204_155638_Facebook.jpg
 
pwood999 said:
Keyswitch should toggle to GND when turning the key either way. CDL tells BECM if the latch is locked or unlocked.

The combination of both is what the BECM uses to figure out key direction & movement so it knows which way to spin the motors, and also for EKA entry.

Also on GEMS & Thor, contrary to popular belief disabling EKA only prevents you from entering it, but does not remove the need for it occaisionally. So on these motors yes disable immobilisation, but not EKA. Diesel BECM behaviour might be different (especially as the ECU enable/disable is different).
Click to expand...
On the diesel disabling EKA removes the need for it and allows the car to be operated with just the key blade, remobilisation of the EDC happens automatically without the need for a FOB code.
 
Dry and mild this morning so whipped off the osr door card to investigate the iffy sill knob.
Nothing amiss but a spray of silicone on the plastic cam and the rod guides got it running smooooth again.
20241205_102053.jpg

20241205_102102.jpg
 
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