Principle of Operation
The steering column adjustment is electrically controlled by a button located on the left side of the steering column. See Fig 1. The electric steering column is adjusted by two motors in the up/down and in/out directions.
The various positions are stored in the driver's seat module when one of the seat memory buttons are pressed. The steering column is automatically moved to the uppermost forward position to provide easy entry and exit from the driver's seat. See Fig 2.
There are no Check Control messages for the steering column adjustment because the driver receives immediate feedback in the event of a fault.
The CIM module will deactivate the steering column adjustment motors when overvoltage of 16 volts or more is detected. The motors will be activated again when the voltage drops below 16 volts for more than 2 seconds.
The motors are also protected from overheating by the CIM module. A temperature calculation is performed in the CIM based on activation time (in case of jamming) and the motors will be deactivated to allow a "cool down" time.