Normal Operation
WARNING: This page is about a different car, the 2010 Mercury Mariner and 2010 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
When the parking lamps are on, the Smart Junction Box (SJB) sends a Pulse Width Modulated (PWM) voltage to the dimmable components.
When the accessory delay relay energizes, voltage is supplied to the door lock control switches, then turns on the switch illumination.
This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Message center switch
- Headlamp switch
- Traction control switch
- Active park assist switch
- Floor shifter
- Ambient lighting switch
- Door lock control switch