Action Taken When the DTC Sets

WARNING: This page is about a different variant/trim than selected.

The TCM requests the ECM to illuminate the malfunction indicator lamp (MIL) when the Conditions for Setting the DTC are met.
The TCM commands maximum line pressure.
The TCM freezes transmission adaptive functions.
At the time of the first failure, the ECM records the operating conditions when the Conditions for Setting the DTC are met. The ECM stores this information as a Freeze Frame.
The TCM stores DTC P1621 in TCM history.