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Sunroof Console Dome Lamp Switch Malfunction

  1. Ignition OFF, disconnect the harness connector at the E37F Dome/Reading Lamps - Front.
  2. Test for less than 5 Ω between the ground circuit terminal 6 and ground.
  3. If greater than the specified range, test the ground circuit for an open/high resistance.
  4. Ignition ON, verify the scan tool Interior/Courtesy Lighting Master Switch parameter is Door.
  5. If the scan tool Dome Lamp Switch parameter is Cancel, test the dome lamp defeat signal circuit terminal 4 for short circuit to ground. If the circuit tests normal, replace the K9 Body Control Module.
  6. If the scan tool Dome Lamp Switch parameter is On, test the dome lamp on signal circuit terminal 5 for short circuit to ground. If the circuit tests normal, replace the K9 Body Control Module.
  7. Install a 3 A fused jumper wire between the dome defeat signal circuit terminal 4 and the ground circuit terminal 6. Verify the scan tool Interior/Courtesy Lighting Master Switch parameter is Cancel.
  8. If not the specified state, test the dome lamp defeat signal circuit for short circuit to voltage or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
  9. Install a 3 A fused jumper wire between the dome lamp on signal circuit terminal 5 and the ground circuit terminal 6. Verify the scan tool Interior/Courtesy Lighting Master Switch parameter is On.
  10. If not the specified state, test the dome lamp on signal circuit for short circuit to voltage or an open/high resistance. If the circuit tests normal, replace the K9 Body Control Module.
  11. If all circuits test normal, test or replace the E37F Dome/Reading Lamps - Front.
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