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Home >> Cadillac >> 1993 >> Allante >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Introduction >> Powertrain Control Module (Pcm) >> Pcm EEPROM
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Pcm EEPROM

NOTE: Disconnecting the battery before the PCM is able to store the values may result in EEPROM reset, Code P080 and transaxle oil life being reset to 0.

The PCM contains a data storage unit which can save critical data even when battery power is removed. This unit, the Electrically Erasable Programmable Read Only Memory (EEPROM) is used by the PCM to store TP Sensor/Idle Learned values, Transaxle Shift Adapt values, Transaxle Oil Life Index and Cruise Control Lash Learn. These values are stored in the EEPROM during the first 30 seconds after the key is turned off. Therefore, you should wait at least 30 seconds after key off before disconnecting the battery to allow these values to be stored in the EEPROM. The EEPROM is soldered into the PCM and cannot be serviced separately.

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