Programming Precautions

Ensure the following conditions are met before attempting to program Powertrain Control Module (PCM).

• Battery is fully charged. Battery charger is NOT connected.
• Charging system concerns are not present. Repair as necessary.
• All vehicle accessories are off.
• No components are connected that can put excessive load on electrical system.

Incorrect system voltage or voltage fluctuations from a battery charger can cause programming failure or can cause control module damage. Ensure ignition switch is in proper position specified. Scan tool will prompt to turn ignition on with engine off. During programming procedure, DO NOT change position of ignition switch unless instructed. When programming, DO NOT disturb scan tool connection. If an interruption occurs during programming, programming failure or PCM damage may occur.