Tribute 4WD L4-2.5L Hybrid (2009)
Tail Lamp: Description and Operation
PARKING, REAR AND LICENSE PLATE LAMPS
See the Tribute Wiring Diagram for schematic information.
Principles of Operation
NOTE:The smart junction box (SJB) is also known as the generic electronic module (GEM).
The SJB monitors the headlight switch position by sending voltage reference signals on multiple circuits to the headlight switch. There is one circuit for
each headlight switch position. At any given time, one of the signal circuits is routed to ground.If the SJB does not detect any of the inputs to the
headlight switch is active (routed to ground) for 5 seconds, the SJB turns on the exterior lights and keeps them on for 10 minutes after the ignition switch
is turned off (or 10 minutes from the time the SJB does not detect any headlight switch input if the ignition switch was already off). Additionally, if the
SJB detects multiple circuits short to ground, the SJB implements a planned strategy depending on the multiple inputs received. Based on the multiple
inputs received, the autolamps, the headlamps and/or the parking lamps are turned on.If either of these situations occur, the SJB cannot be ruled
immediately as being at fault. This is normal behavior of the SJB design as it has detected a fault with the inputs from the headlight switch.
When the SJB receives an input from the headlight switch indicating a request for the parking lamps, the SJB energizes the parking lamp relay
(integrated into the SJB), which supplies voltage to the exterior lamps.
