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Home >> GMC >> 2007 >> Acadia SLE, AWD >> Repair and Diagnosis >> Accessories & Equipment >> Interior/Illumination Lights >> Lighting Systems >> Diagnostic Information and Procedures >> Courtesy Lamps Always On

Courtesy Lamps Always On

Courtesy Lamps Always On

Step Action Yes No
Schematic Reference: Interior Lights Schematics 
Connector End View Reference: Lighting Systems Connector End Views , Master Electrical Component List
1 Did you perform the Diagnostic System Check - Vehicle? Go to Step 2  Go to Diagnostic System Check - Vehicle
2 Verify that the courtesy/dome lamps are always ON.
Do the courtesy/dome lamps operate normally?
Go to Testing for Intermittent Conditions and Poor Connections Go to Step 3 
3 Test for a short to voltage on the courtesy lamp supply voltage circuit. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 13  Go to Step 4 
4
  1. Ensure that the instrument panel lamp dimmer switch is in the minimum brightness position.
  2. Inspect for the following related body control module (BCM), driver door switch, and passenger door switch data parameters. Refer to Scan Tool Data List  and Scan Tool Data Definitions  for typical values and definitions:
    • Interior Lights Command
    • Interior Lights Dimmed Command
    • ALC Headlamp Status
    • Driver Door Ajar Sw.
    • Passenger Door Ajar Sw.
Was a problem found?
Go to Step 5  Go to Step 9 
5 Disconnect and test the switches of the affected input circuit for proper continuity in the open and closed positions. Refer to Testing for Continuity .
Is continuity correct in both positions?
Go to Step 6  Go to Step 7 
6 Test the signal circuits of the affected input switches for a short to ground. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 13  Go to Step 8 
7 Inspect for poor connections at the harness connector of the affected switch. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 13  Go to Step 10 
8 Inspect for poor connections at the harness connector of the module in the affected circuit. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 13  Go to Step 11 
9 Inspect for poor connections at the harness connector of the BCM. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs .
Did you find and correct the condition?
Go to Step 13  Go to Step 12 
10 Replace the malfunctioning switch in the affected circuit.
Did you complete the replacement?
Go to Step 13  -
11 Replace the module in the affected circuit. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 13  -
12 Replace the BCM. Refer to Control Module References for BCM replacement, setup, and programming.
Did you complete the replacement?
Go to Step 13  -
13 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 3