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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1513 (Lighting Systems) >> Diagnostic Information and Procedures >> Courtesy Lamps Always On

Courtesy Lamps Always On

WARNING: This page is about a different car, the 2004 Chevrolet Corvette. However, it is still accessible from the selected car via links, so may be relevant.
Courtesy Lamps Always On

Step Action Yes No
Schematic Reference: Interior Lights Dimming Schematics 
Connector End View Reference: Master Electrical Component List
1 Did you perform the Lighting System Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Lighting Systems 
2
  1. Turn the headlamp switch to the OFF position.
  2. Close all doors.
Are all of the courtesy lamps OFF?		 Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Remove the CTSY LP relay 42.
Do the courtesy lamps turn OFF?		 Go to Step 4  Go to Step 5 
4
  1. Inspect for a short to ground in the CTSY LP relay control circuit. Refer to Wiring Repairs in Wiring Systems.
  2. If OK, replace the CTSY LP relay 42. Refer to Relay Replacement (Within an Electrical Center) or Relay Replacement (Attached to Wire Harness) in Wiring Systems.
Did you complete the repair?		 Go to Step 6  -
5 Repair a short to battery positive voltage in the switch courtesy lamp voltage supply circuit. Refer to Wiring Repairs in Wiring Systems.
Did you complete the repair?		 Go to Step 6  -
6 Operate the system in order to verify the repair.
Did you correct the condition?		 System OK Go to Step 3 
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