Service manual

Body and Accessories Lighting Systems 8-97
2006 LSSV Service Manual Supplement
Blackout (B/O) Headlamp Always On
Step Action Yes No
Schematic Reference: Exterior Lights Schematics and Interior Lights Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
Go to Step 2
Go to Blackout
(B/O) Lighting
Circuit Operation
2
Place blackout (B/O) drive lamp switch in OFF mode. Connect
a test lamp between blackout (B/O) drive lamp switch cavity B
circuit 901 (TN/WH) to ground.
Does the test lamp illuminate? Go to Step 3 Go to Step 4
3
Replace blackout (B/O) drive lamp switch. Refer to Blackout
(B/O) Switch Replacement.
Did you complete the replacement? Go to Step 5
___
4
Repair short to power in circuit 901 (TN/WH) or inoperable
blackout (B/O) control relay.
Did you find and correct the condition? Go to Step 5
___
5
Operate the system in order to verify the repair.
Did you correct the condition?
System OK Go to Step 2
Headlamps Operate in Blackout (B/O) Mode
Step Action Yes No
Schematic Reference: Exterior Lights Schematics and Interior Lights Schematics
1
Did you review Blackout (B/O) Lighting Description and
Operation?
Go to Step 2
Go to Blackout
(B/O) Lighting
Circuit Operation
2
1. Place blackout (B/O) service switch into the blackout
(B/O) mode.
2. Connect a test lamp from cavity 85 at the blackout
(B/O) lighting drive relay and ground.
Does the test lamp illuminate? Go to Step 4 Go to Step 3
3
Replace blackout (B/O) drive relay.
Did you complete the replacement? Go to Step 5
___
4
Replace blackout (B/O) service switch. Refer to Blackout (B/O)
Switch Replacement.
Did you complete the replacement?
Go to Step 5
___
5
Operate the system in order to verify the repair.
Did you correct the condition? System OK Go to Step 2