Vehicle Damage Warnings

SAFEGUARDS
1. Always disconnect the battery ground cable prior to service.

NOTE: When battery voltage is removed from the Powertrain Control Module (PCM), all learned values will be cleared and reset to predetermined values. When battery voltage is restored to the PCM, the vehicle may exhibit certain driveability concerns. It will be necessary to drive the vehicle to allow the PCM to relearn values for optimum driveability and performance.

2. Follow diagnostic procedures as outlined in Testing and Inspection.
3. Disconnect the PCM from wire harness before measuring for continuity, resistance or energizing with any voltage source.
4. Never measure voltage or resistance directly at the PCM.