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

1. Place the blackout (B/O) service switch in blackout (B/O) mode.
2. Connect a test lamp at cavity C of the blackout (B/O) switch and ground.

Does the test lamp illuminate?

Go to Step 3

Go to Step 6

1. Disconnect the blackout (B/O) service switch connector from the switch.
2. Connect a test lamp at cavity C of the connector and ground.

Does the test lamp illuminate?

Go to Step 5

Go to Step 4

Replace the blackout (B/O) service switch. Refer to Blackout Lamp Switch Replacement .

Did you complete the replacement?

Go to Step 9

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Locate and repair the short to voltage on circuit 912 (OG).

Did you complete the repair?

Go to Step 9

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Remove the backup lamp interrupt relay from the realy module.

Are the backup lamps illuminated?

Go to Step 8

Go to Step 7

Replace the backup interrupt relay.

Did you complete the replacement?

Go to Step 9

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Locate and repair the short to voltage on circuit 1970 (PK/WH).

Did you complete the repair?

Go to Step 9

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Operate the system in order to verify the repair.

Did you correct the condition?

System OK

Go to Step 2