Light should go out. In instances where ground relay trips repeatedly during operation, the unit concerned should be isolated and the trouble reported. As is true with repeated wheel slip action, the unit concerned should not be allowed to remain in the locomotive consist unless it is absolutely certain that all wheels are rotating freely. The speed and power of ALL engines in the locomotive consist are reduced to IDLE conditions. No alarm bells will ring.
Air brake is recovered.
This ordinarily takes 6 to 10 seconds. The PCS OPEN light will then go out indicating a reset switch. Return brake valve handle to running position. In the event of the PCS switch tripping due to an emergency air brake application initiated from the locomotive, the brake valve should be returned to release position after the locomotive stops. After this, place brake valve in running position and the throttle in IDLE to reset PCS switch.