the D relay is stuck powered?
if yes, you can stick paper in contacts in the circuit like 1B and 2B to narrow down which branch is completing the circuit.
if D is not stuck on, then what damoib said in post #23 is probably the most direct route to go. If the motor and scoring is annoying while you are looking around to see what relay/switch is powering the motor, pull out the motor service plug to turn off the motor.