F 550 2WD Super Duty V10-6.8L (2009)
again.
NOTE: Time out is 1 minute if the vehicle has less than 80 km (50 miles).
The battery saver time-outs are as follows:
-
Courtesy lamps, if the dome lamp is off = 10 minutes
-
Courtesy lamps, if the dome lamp is on, demand lamps = 10 minutes
Field-Effect Transistor (FET) Protection
The Smart Junction Box (SJB) utilizes a Field-Effect Transistor (FET) protective circuit strategy for many of its outputs (for example, the headlamp
output circuit). Output loads (current level) are monitored for excessive current (typically short circuits) and are shut down (turns off the voltage or
ground provided by the module) when a fault is detected. A continuous DTC is stored at the time of the fault. The circuit then resets after a customer
demand of the function (switching the component on, battery saver being energized). When an excessive circuit load occurs several times, the module
shuts down the output until a repair procedure is carried out. At the same time, the continuous DTC that was stored on the first failure cannot be cleared
by a command to clear the continuous DTCs. The module does not allow this code to be cleared or the circuit restored to normal until a successful
on-demand self-test proves that the fault has been repaired. After the on-demand self-test has successfully completed (no on-demand DTCs present), the
continuous DTC clears and the circuit function returns.
Each circuit has 3 predefined levels of short circuit tolerance established in the module based on each circuits' capability. When the first or second level
is reached, the continuous DTC associated with the circuit sets along with DTC B106E. These DTCs may be cleared using the Clear DTC operation on
the scan tool as long as the fault itself has been corrected. If any of the circuits are shorted past the third level, then DTC B106F sets along with the
associated continuous DTC. This DTC cannot be cleared and the module must be replaced.
The SJB FET protected output circuits for the interior lighting system are for the interior lamp output, cargo and running board lamp circuits.
