Status Light Indicators: BCM

The following is a brief summary of BCM system status light indicator operation.

• PRESS light (CRT equipped) or LOWER ARROW light (ECCP equipped) will be on if BCM senses low refrigerant pressure switch is open. Light will remain off if A/C system is fully charged and operational. (However, light will come on when outside vehicle ambient temperature is less than -5°F (-21°C), this is due to temperature-pressure relationship of R-12 refrigerant).
• OFF light (ECCP equipped) or REC light (CRT equipped) will be on when BCM commands air recirculation.
• MED light (ECCP equipped) or A/C light (CRT equipped) will be on when BCM commands air flow out A/C vents. Light should also be on in A/C and BI/LEVEL modes.
• AIR UP light (CRT equipped) or LOW light (ECCP equipped) will be on when BCM commands air flow out defroster outlets. Light should also be on in defrost and A/C modes.
• AIR DOWN light (CRT equipped) or HIGH light (ECCP equipped) will be on when BCM commands air flow out floor outlets. Light should be on in heater mode.
• Left side AUTO light (ECCP equipped) or COMP light (CRT equipped) will be on when BCM requests ECM to engage A/C compressor clutch.