Power Mirror Control Module: Description and Operation

CIRCUIT DESCRIPTION
The Memory Seat Module (MSM) and Memory Mirror Module (MMM)each perform self tests on its EEPROM.

CONDITIONS FOR SETTING THE DTC
These DTCs will set if the MSM or MMM detect a problem with the EEPROM.

ACTION TAKEN WHEN THE DTC SETS
For DTC B1656, the module will store the value being written on another block of the EEPROM.

For DTC B1658, the module will use default values for the blocks of the EEPROM that are corrupt.

CONDITIONS FOR CLEARING THE MIL/DTC
The self test indicates that the EEPROM is OK.

DIAGNOSTIC AIDS
1. If any of these DTCs are set, clear DTCs and cycle the ignition.
2. If any of these DTCs are still current. replace the suspect module.