Principles of Operation

PRINCIPLES OF OPERATIONS

The Hybrid Electronic Cluster (HEC) receives its input and output signals hardwired or over the ISO 9141 K bus line. The HEC carries out a display prove out to verify that warning/indicator lamps and monitored systems are functioning correctly. When the ignition switch is in the ON position with the engine off, the following warning indicators will illuminate or be displayed:
^ Anti-lock Brake System (ABS)
^ Air bag (if equipped)
^ Charge system
^ Low coolant
^ Low fuel
^ Low washer fluid level
^ Safety belt (60 second proveout)
^ Malfunction Indicator Lamp (MIL)

The HEC controls the illumination of the following indicator lamp module warning indicators:
^ Maintenance interval warning indicator
^ Frost warning indicator (orange)
^ Ice warning indicator (red)
^ Brake pad wear
^ Door/liftgate ajar

The bulb warning indicator is controlled by the bulb outage module.