F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
Daytime Running Lamp: Pinpoint Tests
PINPOINT TEST AE: THE DAYTIME RUNNING LAMPS (DRL) ARE INOPERATIVE
Normal Operation
When the ignition switch is in the RUN position, the headlamps are not on (from the autolamp system or manual control from the headlamp switch),
the transmission is not in PARK (P) (automatic transmission) or the parking brake is not applied (manual transmission), the smart junction switch
(SJB) provides a pulse-width modulated (PWM) voltage to the low beam headlamps. This illuminates the headlamps at a reduced intensity.
This pinpoint test is intended to diagnose the following:
-
Exterior lighting system input/output
-
SJB configuration
-
Ignition switch input
-
Transmission gear input (automatic transmission)
-
Parking brake switch input (manual transmission)
-
SJB
AE1-AE2
