Vehicle Damage Warnings

Before disconnecting any control module make sure the ignition is "OFF". Failure to do so could damage the module.

When testing voltage or continuity at any control module use the terminal side (not the wire end) of the connector. Do not probe a wire through the insulation this will damage it and eventually cause it to fail because of corrosion. Be careful when performing electrical tests so as to prevent accidental shorting of terminals. Such mistakes can damage fuses or components. Also a second code could be set making diagnosis of the original problem more difficult.

NOTE: A POWERTRAIN CONTROL MODULE FROM A VEHICLE EQUIPPED WITH A VEHICLE THEFT SECURITY SYSTEM CANNOT BE USED IN A VEHICLE THAT IS NOT EQUIPPED WITH A VEHICLE THEFT SECURITY SYSTEM. IF THE VTSS INDICATOR LAMP COMES ON AFTER IGNITION ON AND STAYS ON THE PCI BUS COMMUNICATION WITH THE POWERTRAIN CONTROL MODULE HAS BEEN LOST.