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Symptom: *READING & VANITY LAMPS INOPERATIVE POSSIBLE CAUSES BULBS COURTESY LAMP DRIVER CIRCUIT OPEN BCM, COURTESY LAMP DRIVER TEST ACTION APPLICABILITY 1 Remove and check inoperative bulbs. All Yes → No → Replace the bulbs. 2 Turn ignition off. All Yes → No → Repair the open Courtesy Lamp Driver circuit or Switch. 3 Turn the Dome Lamp Switch to the ON position. All Yes → Test Complete. No → Replace the defective Body Control Module (BCM). 423 INTERIOR LIGHTING |