B2960

Diagnostic Chart:

CIRCUIT DESCRIPTION
A transponder is embedded in the head of the Passkey III key. When the ignition switch is turned to the RUN, Bulb Test, or START position, the transponder is energized by the exciter coils surrounding the ignition lock cylinder. The energized transponder transmits a signal that contains its unique identification code. The theft deterrent module receives this identification code signal to determine whether the Passkey III coded key is legitimate or invalid.

CONDITIONS FOR RUNNING THE DTC
- The ignition switch must be in the RUN, Bulb Test or START position.
- The theft deterrent module reads the identification code in the Passkey III coded key every 0.3 seconds and compares it against the valid stored identification code stored in memory.

CONDITIONS FOR SETTING THE DTC
The theft deterrent module read an identification code in the Passkey III coded key that is not the same as the valid stored identification code stored in memory. The theft deterrent module considers this to be a tamper attempt. Refer to Circuit Operation for additional information.

ACTION TAKEN WHEN THE DTC SETS
- DTC B2960 set as current DTC in the theft deterrent module.
- The theft deterrent module does not send a fuel enable signal to the Powertrain Control Module (PCM).
- The theft deterrent module flashes the SECURITY indicator in the Instrument Panel cluster.
- The theft deterrent module starts a 10-minute lockout timer. No further key reads will be performed until this time elapses.

CONDITIONS FOR CLEARING THE MIL/DTC
- The theft deterrent module no longer reads an invalid identification code in the Passkey III coded key during the next ignition cycle.
- A history DTC will clear after 100 consecutive fault-free ignition cycles. An ignition cycle consists of an ignition switch transition from LOCK/OFF to RUN.
- Using a scan tool.

DIAGNOSTIC AIDS
- Determine if key used is the incorrect one. Perform the PASS-Key III programming procedure.
- A poor or intermittent connection may cause this DTC to set. Refer to Testing for Intermittent and Poor Connections in Diagrams.

TEST DESCRIPTION
The numbers below refer to the step numbers on the diagnostic table.
2. To set this DTC, a key with a working transponder was read by the theft deterrent module. For that key to operate the vehicle, a 30 minute Passkey III programming procedure must be performed.