Selection of Current Immobilization Strategy

* SELECTION OF CURRENT IMMOBILIZATION STRATEGY *

CAUTION:
Any repair procedure that replaces the 10AS ECU will cause the GEMS ECM to relearn the security code. Depending on the configuration of the 10AS ECU installed, the GEMS ECM may re-enable the early immobilization strategy.

NOTE:
The "Discovery Security Configuration," CD can be used to install the most current 1998 level of vehicle security. The new level of security will eliminate the intermittent failure-to-start symptom experienced on some 1996 and 1997 vehicles. The 1998 level of security continues to activate the horn and the lights and continues to inhibit engine cranking.





1. Activate Test Book and access the Welcome Screen (Figure 1).

2. Insent the "Discovery Security Configuration" disk into TestBook and follow the on-screen prompts to install the current security strategy as follows:

^ Select "DIAGNOSTIC SYSTEM."





^ Select "DISCOVERY" and "SECURITY CONFIGURATION" at the Model Derivative Selection screen (Figure 2).

^ Press"CONTINUE."

^ Enter the 17-digit VIN at the VIN Entry Screen.

^ Press "CONTINUE."

^ Verify "Vehicle Information" screen data is correct.

^ Press "CONTINUE."





^ If current 1998 model year strategy is desired, select "NEW STRATEGY" at the System Selection screen (Figure 3).

^ If selection of 1996-97 strategy is desired, select "OLD STRATEGY."





^ Follow the on-screen prompts carefully to complete the security strategy configuration (Figure 4).