LS2 V6-3.0L VIN R (2000)
Circuit Chart
CIRCUIT CHART
Circuit assignments for the body control module (BCM) relating to security system:
SECURITY SYSTEM
The passlock sensor is powered by circuit 812. The passlock sensor is grounded by circuit 1057. Passlock sensor data is supplied to the 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.
KEY-IN-IGNITION
When the ignition key is seated in the ignition switch, the key-in-ignition switch contacts close grounding circuit 80. The BCM monitors the state of
the key-in-ignition switch, the state of the ignition switch (OFF, ACC or RUN) and the driver's door to control the key-in-ignition chime.
Traction Control
Circuit Chart
CIRCUIT CHART
Circuit assignments for the Body Control Nodule (BCM) relating to traction control system:
TRACTION CONTROL SYSTEM OFF INDICATOR
When the traction control system is in the On state, the traction control Light Emitting Diode (LED) request from the Electronic Brake Traction
Control Module (EBTCM) to the BCM circuit 832 is at battery voltage. In response, the BCM grounds circuit 1660. This action turns On the traction
control LED indicating to the driver the traction control system is able to react to slippery conditions.
When the traction control system is in the Off state, the traction control LED request from the EBTCM to the BCM circuit 832 is switched to ground.
In response, the BCM switches OFF the traction control LED indicating to the driver the traction control system has been disabled.
Wiper/Washer
