Schematic Reference: Exterior Lights Schematics and Interior Lights Schematics

Did you review Blackout (B/O) Lighting Description and Operation?

Go to Step 2

Go to Blackout Lighting Circuit Operation

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

Replace blackout (B/O) drive lamp switch. Refer to Blackout Lamp Switch Replacement .

Did you complete the replacement?

Go to Step 5

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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

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2