Body Control Module (BCM)

The BCM is used in the HVAC system to relay sensor and vehicle operational status to the HVAC module. The information is used by the HVAC module to make changes and adjustments to the system when correction is needed or requested by the operator.

Inputs:

• Vehicle speed signal
• Vehicle speed fault status
• A/C Pressure
• A/C Pressure fault status
• A/C compressor status
• Engine RPM
• Engine RPM fault status
• Climate system start/stop info
• Climate system start/stop enable
• Ignition status
• Operational mode status
• Alternator fault status

Outputs:

• Climate start/stop info
• Stop/start enable
• Vehicle speed signal
• Vehicle speed fault status
• A/C Pressure
• A/C Pressure fault status
• A/C compressor status
• Engine RPM
• Engine RPM fault status
• Door and liftgate switch status