Conditions for Setting the DTC

WARNING: This page is about a different car, the 2009 Pontiac Torrent and 2009 Chevrolet Equinox. However, it is still accessible from the selected car via links, so may be relevant.

The ECM receives a serial data message from the TCM in order to illuminate the MIL.
The condition exists, then a 5 second delay for MIL On.