DeVille V8-4.6L VIN Y (1998)
Powertrain Control Module: Component Tests and General Diagnostics
EEPROM Data Following PCM Replacement
Procedures Following PCM Replacement
Since the data contained in the EEPROM is specific to the vehicle that the PCM is in, the EEPROM should reset if the PCM is installed in another
vehicle.
When this reset occurs, the following data will be erased or reset
^
TP sensor learn
^
Transaxle adapts (shifts, steady state, and garage shifts)
^
Transaxle oil life
^
Engine oil life
^
PCM odometer reading.
Resetting transaxle oil life will trigger the Change Trans Fluid message. Resetting engine oil life will trigger the Change Engine Oil Now message. The
TP sensor learn can be relearned by ensuring the throttle is closed and turning the ignition ON for 30 seconds. Do not move the throttle or brake pedals
during the TP learn. The transaxle oil life may be reset using the transaxle oil life override or it may automatically reset to 100 depending on the vehicle.
The engine oil life may be reset to 100 by displaying the Oil life left and pressing the Reset button. Engine oil life may be reset to near it's previous value
with a scan tool. The transaxle adapts will be relearned during normal operation. The PCMs learned odometer reading must be reset with a scan tool on
vehicles without a smart (serial data equipped) Instrument Panel (IP). Smart IPs communicate their odometer value to the PCM at ignition ON.
