SHIELD AS 1W0464 - Caterpillar

Conditions Which Generate This Code:
Illustration 1 g00531689
System Schematic For The Relay Driver Module (RDM) Data LinkThe GSC+ communicates with the relay driver module (RDM) by a serial data link. When the data link malfunctions, R1 output (terminal 2 of the RDM) will be activated on and off at a rate of 0.5 Hz. Relays R2 through R9 may maintain the current state. Also, the relays may default to the OFF position. These steps are controlled by a jumper between terminals 6 and 7 of the RDM. If a jumper is NOT present when the serial data link has a fault, the relay outputs (R2 through R9) will maintain the states that the relays are currently in. If the jumper is present, R2 through R9 will default to OFF.Note: The maximum distance between a module and the GSC+ is 305 m (1000 ft). If this specification is not met, the data link may malfunction.