Lamp, Courtesy, Seat: Description
Illumination for the drivers and passenger rear cargo floor area is provided by LED lamps mounted to the bottom of the left and right rear seat cushion bottoms. Courtesy illumination will occur when the front doors are opened and the lamp will fade to off after the doors are closed. The courtesy/floor light will also illuminate when using the thumb wheel on the headlamp switch. The LED lamp will be replaced as a unit with a short harness connection.
The lamps of the interior lighting system can be divided into two general classifications based upon the circuit that controls their operation: The courtesy lamp circuit, or the panel lamps dimmer circuit. Following are paragraphs that briefly describe the operation of each of these interior lighting circuits.
The lamps and the hard wired circuits between components related to the interior lighting system may be diagnosed using conventional diagnostic tools and procedures. Refer to the appropriate wiring information. The wiring information includes wiring diagrams, proper wire and connector repair procedures, details of wire harness routing and retention, connector pin-out information and location views for the various wire harness connectors, splices and grounds.
However, conventional diagnostic methods will not prove conclusive in the diagnosis of the interior lighting system or the electronic controls or communication between modules and other devices that provide some features of the interior lighting system. The most reliable, efficient, and accurate means to diagnose the interior lighting system or the electronic controls and communication related to interior lighting system operation requires the use of a diagnostic scan tool. Refer to the appropriate diagnostic information.