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Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 100 (Lighting Systems) >> Diagnostic Information and Procedures >> Reading Lamp(s) Inoperative

Reading Lamp(s) Inoperative

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
Reading Lamp(s) Inoperative

Step Action Yes No
Schematic Reference: Interior Lights Schematics 
Connector End View Reference: Master Electrical Component List in Wiring Systems
1 Did you perform the Lighting Systems Diagnostic System Check? Go to Step 2  Go to Diagnostic System Check - Lighting Systems 
2 Place the appropriate reading lamp in the ON position.
Does the reading lamp operate properly?
Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems Go to Step 3 
3 Does the courtesy lamp function of the inoperative reading lamp operate properly? Go to Step 4  Go to Courtesy Lamps Inoperative 
4
  1. Disconnect the appropriate reading switch.
  2. Using a test lamp connected to battery positive voltage, probe the ground circuit of the reading lamp switch.
Does the test lamp illuminate?
Go to Step 5  Go to Step 6 
5 Inspect for poor connections at the harness connector of the reading lamp. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Wiring Systems.
Did you find and correct the condition?
Go to Step 8  Go to Step 7 
6 Repair an open or high resistance in the ground circuit of the reading lamp switches. Refer to Circuit Testing and to Wiring Repairs in Wiring Systems.
Did you correct the condition?
Go to Step 8  -
7 Replace the appropriate reading lamp. Refer to Roof Side Rail Lamp Replacement .
Did you complete the replacement?
Go to Step 8  -
8 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 2