Unprogrammed Theft Deterrent Module (SEO Equipped Vehicles)

If you replace a theft deterrent module on an SEO equipped vehicle, do not program the theft deterrent module.

The key detection circuit wires on non-SEO equipped vehicles are shorted together. This prevents unnecessary theft deterrent module programming. Refer to Theft Deterrent System Schematics. Electrical Diagrams

When the theft deterrent module is left unprogrammed, the theft deterrent module will never end the programming sequence. During the programming sequence, the theft deterrent module performs the following actions:
- Sends an output (ground) to the Data Link Connector (DLC) terminal 8.
- Enables the theft deterrent relay. This also enables the starter circuit.
- Sends a password to the PCM through the fuel enable signal circuit in order to enable fuel delivery to the engine.
- The engine starts.

If by any chance the theft deterrent module programs itself, the vehicle will experience a no-crank condition. This may be caused by an open or excessive resistance in the key detection circuit jumper wire. Refer to Theft Deterrent System Schematics.