Impala V6-3.8L VIN K (2004)
Lock Cylinder Switch: Description and Operation
PASSLOCK(TM) SENSOR
The Passlock(TM) sensor contains 2 hall effect sensors. The tamper hall effect sensor is on the top. The security hall effect sensor is under the tamper
hall effect sensor. Both of the hall effect sensors monitor the magnet of the lock cylinder through an opening. The tamper hall effect sensor is physically
placed on top of the security hall effect sensor. This arrangement enables the tamper hall effect sensor to engage first if an intruder attempts to bypass the
Passlock(TM) sensor by placing a large magnet around that area of the steering column. There is a tamper resistor inside the Passlock(TM) sensor in
order to help prevent tamper to the system. Passlock(TM) equipped vehicles have a selection of 10 different security resistors ranging from 0.5K ohms
up to 13.6K ohms. Installing one of the security resistors inside the Passlock(TM) sensor will generate a unique Passlock(TM) code. All 10
combinations of the Passlock(TM) sensor have the same part number.
