Normal Operation
WARNING: This page is about a different car, the 2008 Mercury Mariner and 2008 Ford Escape. 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 GD112 (BK/GN) and GD114 (BK/BU).
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Floor shifter
- Headlamp switch
- Message center switches
- Traction assist/parking aid disable switch