Test G: One Or More (But Not All) Non-Dimmable Illumination Sources Are Inoperative

PINPOINT TEST G: ONE OR MORE (BUT NOT ALL) NON-DIMMABLE ILLUMINATION SOURCES ARE INOPERATIVE

Normal Operation
When the delayed accessory relay is energized, voltage is supplied from the smart junction box (SJB) to the door lock control switches (Fusion, Milan), the roof opening panel control switch (if equipped) and the cigar lighter (MKZ) through circuit CBP02 (GN). The LH door lock control switch is grounded through circuit GD126 (BK/WH). The RH door lock control switch is grounded through circuit GD139 (BK/YE). The cigar lighter is grounded through circuit GD115 (BK/GY). The roof opening panel control switch is grounded through circuit CPR39 (VT/WH) to the roof opening panel module, which is grounded through circuit GD139 (BK/YE).

All of the non-dimmable illumination source bulbs share an internal ground within their respective component. For example, the cigar lighter bulb is spliced internally to the lighter element, and they share a common ground path. Because of this characteristic, a concern in the ground circuit to any non-dimmable illumination source will cause both the illumination bulb and the component, itself, to be inoperative. Refer to the appropriate system if the entire component is inoperative.

For the passenger window switches (Fusion, Milan), the illumination power is provided through the passenger window lock-out switch in the LF window control switch on circuit CPW14 (VT/WH). The lock-out switch must be off in order for the passenger window switches to illuminate. Circuit CPW14 (VT/WH) also provides voltage to the passenger window motors. Therefore, if there is a fault in CPW14 (VT/WH), all of the passenger windows will be inoperative. If an individual passenger window switch illumination is inoperative, but the power windows themselves operate correctly, the cause of the concern is the inoperative passenger window switch. Otherwise, refer to Windows to diagnose the power windows.

This pinpoint test is intended to diagnose the following:
- Wiring, terminals or connectors
- Illumination source
- SJB

G1-G3:

G3-G4: