FixVault
Home › Jeep › 2002 › Grand Cherokee Overland › Repair and Diagnosis › Body & Frame › Body, Cab Control Systems › Body Control Modules › Symptom Tests › Interior Lighting › Reading & Vanity Lamps Inoperative

Reading & Vanity Lamps Inoperative

Possible Causes are:

  1. Remove and check inoperative bulbs. Are the bulbs OK? If yes, go to next step. If no, replace the bulbs. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
  2. Turn ignition off. Disconnect the Junction Block C1 connector. Gain access to an inoperative bulb. Measure the Courtesy Lamp Driver circuit from the Junction Block C1 connector to the bulb connector. Is the resistance less than 5 ohms? If yes, go to next step. If no, repair the open Courtesy Lamp Driver circuit or Switch. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
  3. Turn the Dome Lamp Switch to the ON position. Disconnect Fuse No. 8 from the Junction Block. While backprobing, measure the resistance of the Courtesy Lamp Driver circuit at the Body Control Module connector C1 (cavity No. 8). Is the resistance less than 5 ohms? If yes, test is complete. If no, replace the defective Body Control Module. Perform BODY VERIFICATION TEST VER 1  under VERIFICATION TESTS.
About FixVault