Memory System: Notes

The memory system consists of the driver's power seat, power mirrors, adjustable pedals, and radio presets. Refer to MEMORY MASTER  under DOOR MODULES  in this section for additional information.

The Memory Heated Seat Adjustable Pedal Module (MHSAPM) or the Memory Seat Adjustable Pedal Module (MSAPM) for vehicles equipped without heated seats are located under the driver's seat. It receives input from the following:

• driver's seat position sensors
• PCI Bus circuits

  The MHSAPM/MSAPM uses these inputs to perform the following functions:

• position the driver's memory seat to the memory preset position
• position the pedals to the memory preset position
• send/receive memory system information over the PCI Bus.

The Memory Set Switch is wired to the Driver Door Module (DDM). After pressing the Memory Set Switch (#1 or #2), the DDM receives and interprets the analog signal and then sends a PCI Bus message to the MHSAPM/MSAPM to set or recall the memory seat position (1 or 2). The MHSAPM/MSAPM in turn sends a motion status message back to the DDM. If the message from the MHSAPM/MSAPM indicates no current motion, the DDM will send a recal message to the modules. In addition to setting seat position, the MHSAPM/MSAPM will also set the adjustable pedals to the memory-preset position.

If any one of the memory-controlled systems is inoperative from its manual switch, use the schematics and diagnostic information to correct the concern. This manual addresses the memory problems only and it is assumed there is not a basic component failure.