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Powertrain Control Module: Notes

CAUTION: Before replacing PCM, carefully inspect all wiring and control components. Failure to test for short circuits may result in repeated PCM failure due to shorts. To prevent internal damage to PCM, ensure ignition is off when connecting or disconnecting PCM harness connectors or any electrical components.
NOTE: To prevent internal damage to the Powertrain Control Module (PCM), the ignition must be OFF when disconnecting or reconnecting the PCM connector. Service should normally consist of either replacement of the PCM or Electrically Erasable Programmable Read-Only Memory (EEPROM) reprogramming. If the diagnostic procedures call for the PCM to be replaced, the PCM should be inspected first in order to verify the PCM is the correct part. DTC P0602 indicates the EEPROM programming has malfunctioned. When DTC P0602 is set, reprogram the EEPROM. See PROGRAMMING .
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