8812 - Vehicle and Rail Monitor Will Not Occupy

Take care that you replace the barrel sensor with the appropriate spare. Black with black, yellow with yellow, and verify the label indicates that it is a receiver or transmitter, and that model numbers match.

It would be extremely unlikely for both IR Occupancy sensor pairs to be faulty at the same time. Recheck the sensor functionality and wiring carefully before deciding to replace IR occupancy sensors.

In rare cases, the IR receivers are installed in the auxiliary pillar, and emitters in the control pillar. Spare wires in the crossover cable are used to send the occupancy signal to the nanocontroller.