1. Connect a Scan Tool to the data link connector (DLC).
2. Inspect the scan tool for driver door module (DDM) DTCs.

Are any DDM DTCs present?

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Go to Step 2

Go to Step 3

The DDM DTCs include the following diagnostic tables:

Are any of the above DDM DTCs present?

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Go to the applicable DDM DTC table.

Diagnostic System Check - Power Door Systems

Inspect the Scan Tool for memory seat module DTCs.

Are any MSM DTCs present?

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Go to Step 4

Memory Seats System Check

The following list includes all of the MSM DTCs covered in the power seats system:

Are any of the above MSM DTCs present?

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Go to the applicable MSM DTC table.

Go to Step 5

The following list includes the MSM DTCs not covered in the Power Seats system:

Are any of the above MSM DTCs present?

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Lumbar Support System Check

Go to Step 6

The following list includes the possible MSM DTCs associated with the class 2 bus:

Are any of the above MSM DTCs present?

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Diagnostic System Check - Data Link Communications

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