1. Using a test light, backprobe between CHMSL connector terminal A and ground.
2. Depress and hold the brake pedal.

Does the test light illuminate?

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Go to Step 3

Go to Step 2

Repair a poor connection or an open in circuit 17 between S205 and CHMSL connector terminal A.

Has the repair been made?

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Go to Exterior Lights System Check

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1. Using a test light, backprobe between the CHMSL connector terminal A to terminal B.
2. Depress and hold the brake pedal.

Does the test light illuminate?

--

Go to Step 5

Go to Step 4

Repair a poor connection in circuit 350 between S406 and G302.

Has the repair been made?

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Go to Exterior Lights System Check

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Replace the CHMSL. Refer to High Mount Stop Lamp Replacement .

Has the repair been made?

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Go to Exterior Lights System Check

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