Lamp Substitution
WARNING: This page is about a different car, the 1988 Cadillac Allante and 1987 Cadillac Allante. However, it is still accessible from the selected car via links, so may be relevant.
If a fault is detected in the system that would disable the communication among all OSM modules and the BCM, the BCM will activate the redundant relays which will power the left low beam and the outer top taillamps. This eliminates the total loss of lighting. See LAMP SUBSTITUTION table.
LAMP SUBSTITUTION
| Malfunctioning Lamp | Substitute Lamp |
|---|---|
| Low Beam | Fog Lamp |
| High Beam | Low Beam |
| Front Turn Signal | Parking Lamp |