Instrument Cluster

Instrument Cluster:

(PONTIAC)

Instrument Cluster:

(OLDSMOBILE)

Instrument Cluster:

(BUICK)


The Vehicle Theft Deterrent's logic is contained within the Instrument Cluster. The Instrument Cluster will read an R-Code from the PASSLOCK TM Lock Cylinder within a certain timing window. If the R-Code is correct and within the timed window, the Instrument Cluster will Pass Theft and will transmit it's coded password to the Powertrain Control Module (PCM). There are two ways the Instrument Cluster may enter a theft mode; a bad timing cycle, or a bad R-Code.

If the R-Code is not read within the window, the Vehicle Theft Deterrent will go into a Short Tamper Mode during which the it will not allow the car to operate for four (4) seconds and the indicator will flash. After three (3) consecutive failed timings, the Vehicle Theft Deterrent (VTD) will go into it's Long Tamper Mode. In this mode, the indicator will flash and the Fuel Injectors will be shut off for approximately ten (10) minutes. Please note, before Any Tamper Mode, the vehicle may start; however, the car will quickly stall. If the Instrument Cluster receives the wrong R-Code, the VTD will immediately go into it's Long Tamper Mode in which the vehicle's fuel injection will be locked-out for ten (10) minutes as described above.

The THEFT SYSTEM Indicator will flash while the VTD is in Any Tamper Mode. The Instrument Cluster continually checks the operation of the VTD during the operation of the vehicle. If the THEFT SYSTEM Indicator lights continuously during vehicle operation, Refer to the Vehicle Theft Deterrent's SYSTEM DIAGNOSIS.