1. Disconnect the high mounted stop lamp assembly connector.
2. Connect a test lamp between terminal A of the high mounted stop lamp assembly connector and ground.
3. Depress the brake pedal.

Does the test lamp light?

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Go to Step  2

Go to Step  3

1. Connect a test lamp between terminal A and terminal B of the high mounted stop lamp assembly connector.
2. Depress the brake pedal.

Does the test lamp light?

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Go to Step  4

Go to Step  5

Repair the open in CKT 20 between splice pack S301 and the high mounted stop lamp assembly. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Exterior Lights System Check

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Replace the faulty bulb or repair the open in the lamp assembly. Refer to High Mount Stop Lamp Replacement .

Is the repair complete?

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Go to Exterior Lights System Check

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Repair the open in CKT 850 between the high mounted stop lamp assembly and ground splice pack G402. Refer to Wiring Repairs in Wiring Systems.

Is the repair complete?

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Go to Exterior Lights System Check

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