Key Lock

The key lock function is part of the security system. This function means that the key cannot be removed from the ignition switch (it cannot be turned from position I to 0) if the gear selector is not in the park (P) position. This applies only to vehicles with automatic transmissions.

This function is checked by the central electronic module (CEM). The start control module (SCU) contains a coil which is powered by the central electronic module (CEM). The central electronic module (CEM) receives a signal from the transmission control module (TCM) indicating the position of the gear selector. The key can be turned when the coil has been activated. The key cannot be turned if the coil is not activated.