E 450 V8-5.4L (2009)
Vehicles With Rear Headliner
Vehicles Without Rear Headliner(Except Cutaway)
Cutaway Chassis Vehicles
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Is the voltage greater than 10 volts?
Yes
INSTALL a new interior lamp for the lamp in question. REFER to Interior Lamp See: Dome Lamp/Service and Repair. TEST the system for normal
operation.
No
REPAIR the ground circuit in question for an open. TEST the system for normal operation.
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Pinpoint Test G: The Battery Saver Does Not Deactivate After Time-Out
Interior Lighting
Pinpoint Tests
Pinpoint Test G: The Battery Saver Does Not Deactivate After Time-Out
Refer to Wiring Diagram Set 89, Interior lamps for schematic and connector information. See: Diagrams/Electrical Diagrams/Diagrams By Number
Normal Operation
The Smart Junction Box (SJB) controls the battery saver function. The battery saver function provides automatic shutoff of the interior lamps (courtesy
lamps and demand lamps) after 10 minutes have elapsed in order to save battery power.
This pinpoint test is intended to diagnose the following:
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Wiring, terminals or connectors
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Body builder equipment
