Powertrain Control Module (Pcm): Notes
WARNING: This page is about a different car, the 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.
WARNING:
Before servicing any electrical component, ignition key must be in OFF or LOCK position and all electrical loads must be OFF, unless instructed otherwise in these procedures. If a tool or equipment could easily come in contact with a live exposed electrical terminal, also disconnect negative battery cable. Failure to follow these precautions may cause personal injury and/or damage to vehicle or its components.
CAUTION:
Electronic components used in control systems are designed to carry very low voltages. As little as a 30-volt charge created by static electricity can cause a total or degrading failure in PCM or other electronic components containing integrated circuits. Before servicing Powertrain Control Module (PCM), technician must be grounded and work area to discharge static electricity.
NOTE:
To prevent internal damage to Powertrain Control Module (PCM), ignition must be OFF when disconnecting or reconnecting PCM connector. Service should normally consist of either replacement of PCM or Electrically Erasable Programmable Read-Only Memory (EEPROM) re-programming. If diagnostic procedures call for PCM to be replaced, PCM should be inspected first to verify PCM is correct part. DTC P0602 indicates EEPROM programming has malfunctioned. When DTC P0602 is set, re-program EEPROM.
NOTE:
When replacing production PCM with a service PCM, transfer broadcast code and production PCM number to service PCM label. Do not record information on PCM cover. This will allow positive identification of PCM parts throughout service life of vehicle.