-0.36mv - where are you seeing that?
the hand controller ,reads straight from the ECU, which is coming from the TPS wire from the engine bay
from there, the PFC sends the TPS signal on another wire, to the ABS/A-LSD computer in the boot
so its that wire you need to check if its the same voltage (it sohuld be)
if TPS on the hand controller is always OK this means the sensor is OK and the wire from the sensor to the main ECU loom is OK
from there the PFC (and stock ecu) relay this signal to the ABS/A-LSD computers in the boot as the A-lSD needs to know how hard you pull the throttle cable
if that TPS signal *(the one relayed to the boot PC) dies, out of range or goes spazzo the A-LSD computer goes into fail safe mode and the light comes on and the A-LSD system gives up, ie no lock when wheel spin