B2960

CIRCUIT DESCRIPTION
When an ignition key is inserted into the ignition lock cylinder, the transponder embedded in the head of the key is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique value, which is received by the theft deterrent controller module. The theft deterrent controller module then compares this value to a value stored in memory (learned key code). If the value is correct the theft deterrent controller module sends the enable password via the class 2 serial data circuit to the PCM.

CONDITIONS FOR RUNNING THE DTC
The ignition switch must be in ON. The theft deterrent controller (VTD) module cannot have DTC B1327 set as a current DTC.

CONDITIONS FOR SETTING THE DTC
If the code from the ignition key does not match one stored in memory, the theft deterrent controller (VTD) module sets this DTC. This code indicates the use of a key with a transponder that has not been learned by the VTD module. The vehicle considers this to be a theft attempt.

ACTION TAKEN WHEN THE DTC SETS
^ The Vehicle Theft Deterrent controller (VTD) module sends a class 2 message containing a disable password to the PCM.
^ The vehicle will not start.
^ The VTD module sends a class 2 message to the instrument cluster to flash the SECURITY indicator.

CONDITIONS FOR CLEARING THE MIL/DTC
The theft deterrent controller (VTD) module clears the current status of the DTC when it senses a valid, memorized, key code from the ignition key (transponder).

TEST DESCRIPTION

Steps 1-7:

The numbers below refer to the step numbers on the diagnostic table.
2. Verifies the condition for setting DTC B2960 is current.
4. The only method to determine which re-learn procedure to perform.
5. To set this code, a key with a working transponder that is not learned was read by the theft deterrent controller (VTD) module. For that key to operate the vehicle and one or more learned keys are available, perform the Adding Keys procedure.
6. To set this code, a key with a working transponder that is not learned was read by the (VTD) module. For that key to operate the vehicle and there is only one key available, a 10 Minute or 30 Minute Re-Learn Procedure must be performed.