RAM 3500 Truck 2WD V8-5.7L VIN D (2003)
Lamp Out Indicator: All Technical Service Bulletins
Lamp Out Indicator - ON with Utility Bed Installed
NUMBER: 08-019-03
GROUP: Electrical
DATE: June 20, 2003
SUBJECT:
Lamp Out Indicator With Aftermarket Pick Up Box Installation
MODELS:
2003
DR
Ram Truck
DISCUSSION:
In situations where an aftermarket utility box is installed after the removal of the original equipment pick up box, the lamp out indicator may illuminate.
This is due to the use of aftermarket rear stop and turn signal lamps which use a dual filament bulb instead of separate circuits for the stop and turn
indictor. The Front Control Module (FCM), monitors the current flowing through the stop and turn signal circuits to operate the lamp out feature. Most
aftermarket rear stop and turn signal assemblies use dual filament bulbs with a common stop and turn circuit. The current flow through these units will be
different than the original equipment lamps.
A new feature has been added to the FCM to allow the use of dual filament rear stop and turn signals. This feature is called, "Combined Rear Stop and
Turn lamps". It can be programmed into the FCM using the DRB(R) III on vehicles built after Aug. 6, 2003 (MDH - 0806XX). To program the feature,
connect the DRB(R) III and make the menu selections shown.
Vehicles built prior to Aug. 6, 2003 with earlier version FCM's are not equipped with this capability. The later version FCM, (p/n 56049681AB) can be
installed in these vehicles to provide the feature. Vehicles purchased as "Cab Chassis" or "Box Off" are shipped with the feature activated from the
factory and do not require programming.
POLICY:
Information Only
