General Information

The following information will assist the technician in diagnosing BCM problems. The technician may view the displays while the vehicle is being driven. The data messages on the scan tool are divided into the following items:
^ Module Information
^ Powertrain Control Module (PCM) to BCM
^ A/C Clutch Data
^ Inputs
^ Outputs
^ Data

Module Information
The module information contains the following information:
^ The BCM
^ The GM Pant Number
^ The Calibration ID
^ The year the BCM was built

Powertrain Control Module (PCM) To The BCM A/C Clutch Data
This contains the data sent to the BCM from the PCM.

Data
Data contains general information regarding the following items:
^ The ambient light sensor
^ The fuel sender
^ The low beam input
^ The high beam input
^ The battery voltage

Inputs
Inputs contain general information regarding the following items:
^ The A/C request
^ The ambient light sensor
^ The drivers door ajar switch
^ The front fog lamp switch
^ The high beam feedback
^ The ignition 0 Input
^ The ignition 1 Input
^ The ignition 3 Input
^ The key in ignition
^ The low beam / DRL feedback
^ The low coolant level
^ The park brake switch
^ The park lamp input
^ The passenger ajar switch
^ The passlock(R) data
^ The seatbelt
^ The turn signal switch
^ The washer fluid level

Outputs
Outputs contain general information regarding the following items:
^ The ALC headlamp relay
^ The ALC parklamp relay
^ The DRL relay
^ The front foglamp relay
^ The interior lamp output
^ The power output
^ The passlock (TM) power