The interior lighting system consists of interior/map lamps, cargo lamp and vanity lamps. The smart junction box (SJB) monitors inputs from the LH front door ajar switch, RH front door ajar switch, LH rear door ajar switch, RH rear door ajar switch, liftgate ajar switch and the liftgate glass ajar switch which are internal to the latches.
Refer to INTERIOR LIGHTS (Escape) or INTERIOR LIGHTS (Mariner) for schematic and connector information.
Principles of Operation
The smart junction box (SJB) supplies voltage and ground to the interior lighting system. The interior lighting system illuminates the interior lamps to enhance visibility of the interior while a vehicle door is open or ajar, and the vehicle speed is lower than 15 km/h (9 mph). The SJB controls all interior lighting functions and timing by monitoring inputs from the door ajar switches, liftgate ajar switch, liftgate glass ajar switch and vehicle speed.
Normal Operation
When a door or liftgate is opened, the ajar switch opens the circuit to the SJB. The SJB grounds the interior lamp 401 (PK) circuit, illuminating the interior lamps.
When a door or liftgate is opened, the ajar switch opens the circuit to the SJB. The SJB grounds the interior lamp 401 (PK) circuit, illuminating the interior lamps.
When a door or liftgate is opened, the ajar switch opens the circuit to the SJB. The SJB grounds the interior lamp 401 (PK) circuit, illuminating the interior lamps.
Circuit 1005 (VT/OG) provides voltage to each demand lamp when activated. The demand lamps are grounded through circuit 570 (BK). The battery saver in the SJB deactivates the voltage and ground circuits after time-out.
Circuit 1005 (VT/OG) provides voltage to each interior lamp when activated. The interior lamps are grounded through circuit 401 (PK). The battery saver in the SJB deactivates the voltage and ground circuits after time-out.
The illuminated entry provides interior lighting whenever the SJB receives a lamps ON/doors UNLOCK request from the RKE transmitter. The SJB provides the voltage and ground circuits for the interior/map lamps.
The battery saver provides voltage to circuit 1005 (VT/OG). Circuit 1005 (VT/OG) provides voltage to each demand lamp. Each demand lamp switch, when activated, provides ground to the selected lamp. The lamps are grounded through circuit 570 (BK/WH) or 57 (BK). The battery saver deactivates the voltage circuit when the SJB has timed out.