Engine Controls - PCM, ABS, EEPROM Calibration Listing
NO.: 93-I-12DATE: October, 1993
CORP. NO.: 380106
SUBJECT:
1991-1994 Powertrain Control Module (PCM) and Antilock Brake System (ABS) EEPROM Listing (Information)
TO: Saturn Fixed Operation Managers
The charts summarize 1991-1994 Saturn powertrain control module (PCM) engine, transaxle and antilock brake controller electrically erasable/programmable read-only memory (EEPROM) calibrations released to date.
When any diagnosis leads to EEPROM calibration, the Saturn service stall system (SSS) EEPROM reprogramming feature will provide a list of valid EEPROM calibrations for the vehicle and allow you to select the appropriate one for reprogramming. The EEPROM calibrations listed on the charts may vary from the service stall selections if updates are made by satellite or CD-ROM prior to updating this bulletin.
EEPROM calibration changes may be made for many different reasons. For instance, a calibration change may be made in conjunction with component changes, for a change relative to a current field condition, or as a production running change to provide minor modifications affecting driveability or fuel economy. Also, replacement of a PCM or ABS controller will require reprogramming of the service replacement part. Service part PCM's and ABS controllers must be reprogrammed with options and EEPROM calibrations before they will function properly.
Where applicable, always refer to the specific technical information bulletin listed for details about the symptom that may require an EEPROM calibration change.
NOTE:
The illustration explains how to read the charts.