Memory Functions

WARNING: This page is about a different car, the 2002 Oldsmobile Aurora and 2001 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

When a memory function switch is pressed, the associated signal circuit of the driver's door switch assembly (DDSA) is momentarily grounded. In response to this signal, the DDSA then sends a message via the simple bus interface to the driver door module (DDM) indicating that a memory function signal has been received. The DDM then sends the message to the MSM via the class 2 serial data line.

The current seat position may be recorded for 2 different drivers. To record a position, adjust the drivers seat including the lumbar support to a comfortable position, then press and hold button 1 for 5 seconds, a double beep will sound each time a memory position is set. A second seat position may be programmed by repeating the above steps and pressing button 2. When the MSM receives a memory set message, the MSM records the feedback voltages from the position sensors for the appropriate driver. The easy exit position is programmed by moving the seat to the desired exit position and then holding the exit button for 5 seconds. Two easy exit positions can be programmed, one for each driver.

When the MSM receives a set exit message, the MSM records the feedback voltages from the four seat position sensors for the appropriate driver. The lumbar support is not involved in the easy exit function.

When the memory recall 1 or 2 button is pressed, a single chime is sounded through the radio in order to acknowledge the signal and the MSM receives the memory recall message. In response to this message, the MSM applies battery positive voltage (B+) to the motors until the position sensor feedback voltages equal the feedback voltages stored in memory for the appropriate driver. When the EXIT button is pressed, a single chime is sounded in order to acknowledge the signal and the MSM receives the easy exit message. In response to this message, the MSM applies battery positive voltage (B+) to the seat motors until the position sensor feedback voltages equal the feedback voltages stored in memory for the appropriate driver.

Memory recall will not work if the shift lever is out of NEUTRAL (N) or PARK (P).