Grand Cherokee 2WD L6-4.0L VIN S (1997)
Lamp Out Module: Description and Operation
Lamp Outage Module (LOM)
CIRCUIT OPERATION
The Lamp Outage Module (LOM) determines if a rear lighting lamp is not operating. When the ignition switch is in the START or RUN position,
circuit A1 from fuse 8 in the Power Distribution Center (PDC) connects to circuit A21. Circuit A21 feeds circuit F87 through fuse 5 in the
junction block. Circuits F87 feeds the LOM.
Circuit G46 from the LOM connects to the Vehicle Information Center (VIC). When the LOM senses a inoperative lamp, the VIC displays the
data to the vehicle operator.
Circuit L90 which feeds the tail lamps and side marker lamps, connects to the LOM. From the LOM, circuit L90 continues to the license plate
lamps. Circuits L21 and L22 from the LOM power the tail lamps and side marker lamps.
Circuit L50 from the stop lamp switch connects to the LOM. From the LOM, circuits L73 and L74 power the stop lamps and circuit L87 powers
the Center High Mounted Stop Lamps (CHMSL). Circuit Z1 grounds the LOM.
