Did you perform the Exterior Lights System Check?

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Go to Step 2

Go to Exterior Lights System Check

Inspect the VECHMSL fuse in the underhood fuse block.

Is the fuse open?

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Go to Step 3

Go to Step 4

Locate and repair the short to ground in CKT 1320 (LT BLU).

Is the repair complete?

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Go to Exterior Lights System Check

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1. Disconnect the high mount stoplamp.
2. Connect a J 39200 digital multimeter (DMM) between CKT 1320 (LT BLU) and ground
3. Apply the service brakes.

Is voltage present?

Battery voltage

Go to Step 6

Go to Step 5

Locate and repair the open CKT 1320 (LT BLU).

Is the repair complete?

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Go to Exterior Lights System Check

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1. Connect a J 39200 DMM between CKT 1320 (LT BLU) and CKT 1850 (BLK) at the high mount stoplamp connector.
2. Apply the service brake.

Is voltage present?

Battery voltage

Go to Step 7

Go to Step 8

Replace the high mount stoplamp. Refer to the appropriate procedure:

Is the repair complete?

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Go to Exterior Lights System Check

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Locate and repair the open in CKT 1850 (BLK).

Is the repair complete?

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Go to Exterior Lights System Check

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