FREE REPAIR MANUALS & LABOR GUIDES 1982-2013 Vehicles
Courtesy of Operation CHARM: Car repair manuals for everyone.

GF82.25-P-4101-04T Emergency Alarm Cancellation Switch, Function



GF82.25-P-4101-04T Emergency Alarm Cancellation Switch, Function
- with CODE (934) Taxi emergency alarm unit

The emergency alarm system cancel button (S62/5) is monitored by the multifunction control unit for special-purpose vehicles (MSS) (N26/9). If the emergency alarm system cancel button (S62/5) is pressed, the input of the special vehicle multifunction control module (MSS) (N26/9) is short-circuited to ground. With this an emergency alarm is canceled.

For line monitoring purposes the emergency alarm system cancel button (S62/5) has a resistor (sensing resistor) connected in parallel. A small test current flows through this resistor when the emergency alarm system cancel button (S62/5) is at rest. When the current drops below a defined threshold this indicates an open circuit.