B2955
THEFT DETERRENT - IMMOBILIZER - SOME EXPORT VEHICLESCIRCUIT DESCRIPTION
The vehicle theft deterrent control module checks the theft deterrent exciter module key data signal circuit for a constant voltage condition.
CONDITIONS FOR RUNNING THE DTC
The theft deterrent control module must see the ignition switch input. The theft deterrent control module can not have DTC B1327 set as a current DTC.
CONDITIONS FOR SETTING THE DTC
The theft deterrent control module requires 1 second to monitor the ignition key. After the first second, the theft deterrent control module turns off the power to the theft deterrent exciter module. If the theft deterrent control module senses the key data signal to the theft deterrent exciter module is 12 V for 1 second, the theft deterrent controller module sets this DTC.
ACTION TAKEN WHEN THE DTC SETS
^ The theft deterrent control module sends a class 2 message containing the fuel disable password to the PCM.
^ The vehicle will not start.
^ The theft deterrent control module sends a class 2 message to the instrument cluster to illuminate the SECURITY indicator.
CONDITIONS FOR CLEARING THE MIL/DTC
The theft deterrent control module clears the current status of the DTC when it does not sense a 12 V condition on the theft deterrent exciter module key data signal circuit. The DTC will still be retrieved as current until the ignition switch is cycled. The DTC will become a history DTC at that time.
DIAGNOSTIC AIDS
Refer to Diagnostic Aids for Circuit Testing and Wiring Repair procedures.
TEST
