F 350 4WD Super Duty V8-6.4L DSL Turbo (2008)
C4-C8
Test D: The Courtesy Lamps Do Not Turn On With One Door Open
PINPOINT TEST D: THE COURTESY LAMPS DO NOT TURN ON WITH ONE DOOR OPEN
Normal Operation
When any door is opened, the ajar switch opens the circuit to the smart junction box (SJB). The SJB monitors the ajar circuits, and based on the ajar
status, the SJB supplies voltage to the courtesy lamps on circuit CLN03 (YE/GY).
This pinpoint test is intended to diagnose the following:
