1. Place the headlamp switch in the OFF position.
2. Remove the taillamp relay from the relay socket.

Do the side marker and clearance lamps remain ON?

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Go to Step 2

Go to Step 3

Locate and repair the short to voltage in CKT 94 (BRN) connected to terminal 87 in the taillamp relay socket.

Is the repair complete?

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System OK

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Connect a test lamp between terminal 86 and terminal 85 in the taillamp relay socket.

Does the test lamp light?

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Go to Step 4

Go to Step 5

1. Keep the test lamp connected.
2. Disconnect the harness connector from the headlamp switch

Does the test lamp light?

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Go to Step 6

Go to Step 7

Replace the taillamp relay.

Is the repair complete?

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System OK

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Repair the short to ground in the CKT 85 (GRN/WHT) between terminal 2 in the headlamp switch harness connector and terminal 86 in the taillamp relay socket.

Is the repair complete?

--

System OK

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Replace the headlamp switch.

Is the repair complete?

--

System OK

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