Normal Operation
WARNING: This page is about a different car, the 2008 Ford Pickup, 2008 Ford F550 Super Duty, 2008 Ford F450 Super Duty, and 2008 Ford Cab & Chassis. However, it is still accessible from the selected car via links, so may be relevant.
The smart junction box (SJB) sends a pulse-width modulated (PWM) voltage to the dimmable components through circuit VLN04. Ground is provided through circuits GD115 (BK/GY) and GD116 (BK/VT).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Four wheel drive (4WD) switch
- Adjustable pedals switch
- Message center switch
- Headlamp switch
- Power sliding rear window switch
- Parking aid disable switch
- Traction control switch
- Roof opening panel switch
- Upfitter switches