F 350 4WD Super Duty V10-6.8L VIN Y (2006)
Test H: The Running Board Lamps Are Inoperative/Do Not Operate Correctly (Other Interior
Lamps Operate)
PINPOINT TEST H: THE RUNNING BOARD LAMPS ARE INOPERATIVE/DO NOT OPERATE CORRECTLY (OTHER INTERIOR
LAMPS OPERATE)
H1
H1-H2
Normal Operation
Based on the door ajar switch status, or an illuminated entry signal from the vehicle security module, the instrument cluster energizes the battery saver
relay and the interior lamp relay. When the relays are energized, voltage is supplied to the interior lamps on circuit 53 (BK/LB).
Possible Causes
-
Circuit 53 (BK/LB) open
-
Circuit 57 (BK) open
-
Running board lamp
Test I: The Interior Lamps Are Inoperative From the Headlamp Switch
PINPOINT TEST I: THE INTERIOR LAMPS ARE INOPERATIVE FROM THE HEADLAMP SWITCH
