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Home >> Isuzu >> 2007 >> i-290 LS, Standard >> 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   , Data Communication Connector End Views , or Vehicle Access Connector End Views
 
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 Inspect for the following related body control module (BCM) module data parameters. Refer to Scan Tool Data List  and Scan Tool Data Definitions  for typical values and definitions:
  • The cargo lamp switch
  • The courtesy lamp switch
  • The dome lamp override switch
  • The driver door ajar switch
  • The passenger door ajar switch

Was a problem found?
Go to Step 4  Go to Step 7 
4 Disconnect and test the switch of the affected input circuit for proper continuity in the open and closed positions. Refer to Circuit Testing
Does the switch operate properly?
Go to Step 5  Go to Step 6 
5 Test the signal and ground circuits of the affected input circuit for a short to ground, open or high resistance. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 10  Go to Step 7 
6 Inspect for poor connections at the harness connector of the affected switch. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 10  Go to Step 8 
7 Inspect for poor connections at the harness connector of the BCM. Refer to Circuit Testing and Wiring Repairs .
Did you find and correct the condition?
Go to Step 10  Go to Step 9 
8 Replace the switch in the affected circuit. Refer to one of the following replacement procedures as applicable:
Did you complete the replacement?
Go to Step 10  -
9 Replace the BCM. Refer to Control Module References for replacement, setup, and programming.
Did you complete the replacement?
Go to Step 10  -
10 Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 3