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Theory Of Operation

WARNING: This page is about a different car, the 2013 RAM 1500. However, it is still accessible from the selected car via links, so may be relevant.

The purpose of the diagnostic is to monitor the presence of all inhibit path functionality that are needed to bring the Transmission Control Module (TCM) to a safe state in case of a failure. Proper inhibit path operation means that the TCM is able to switch off a single output stage and it is able to switch off all output stages by, switching off the output stages power supply (high side switch), activating the peripheral reset line or deactivating the peripheral clock.

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