DEFINITION: Use this diagnostic if the lumbar system will inflate but will not deflate.

Has the Lumbar Support System Check been performed?

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Go to Step 2

Go to Lumbar Support System Check

1. Access the lumbar support switch.
2. Connect a J 39200 DMM between CKT 768 (GRY) and ground.
3. Toggle the lumbar support switch to the deflate position.

Is there battery voltage?

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Go to Step 3

Go to Step 4

1. Check for opens, intermittents or poor connections in CKT 768 (GRY) between lumbar support switch and lumbar support motor and solenoid assembly.
2. Repair as necessary. Refer to Wiring Repairs in Wiring Systems.

Were any repairs performed?

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Go to Lumbar Support System Check

Go to Step 4

Replace the lumbar support switch. Refer to the appropriate procedure:

Is the repair complete?

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Go to Lumbar Support System Check

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