B3033

Schematic:

CIRCUIT DESCRIPTION
Passlock sensor data is supplied to the Body Control Module (BCM) by circuit 1836.

The passlock sensor data supplied to the BCM is in the form of V-codes or voltage codes. When the proper ignition key is turned in the ignition switch, the correct V-code is supplied to the BCM. The BCM responds by sending a serial data password to the engine controller allowing the engine to run.

The security resistor is bypassed under a tamper condition (possible external magnet applied to sensor). In this mode, a specific V-code is supplied to the BCM. The vehicle will not start in this mode.

DTC PARAMETERS
^ Ignition is in RUN, START or ACC
^ The passlock data equals stored tamper V-code for 1 second

TEST DESCRIPTION

Diagnostic Chart: