My Engine Light came on and the Sunpro shows a code 536 for "Brake On-Off (BOO) Switch - Circuit failure or not activated during Engine run self-test."
At start, the Engine Light comes on about 5-7 seconds after ignition. Brake lights work.
I can only imagine that there is some problem in another functionality of the circuit, like to the auto transmission clutch control or something.
Any suggestions for further diagnosis?
Many thanks in advance for any help.