DESCRIPTION:High side digital output circuit shorted to power.

MONITORED PARAMETER:High sided digital output.

TYPICAL ENABLING CONDITIONS:Always on

MONITOR SEQUENCE:None

EXECUTION FREQUENCY:Continuous when enabling conditions met.

TYPICAL DURATION:2 Seconds

DASH LAMPS:1. MIL2.CEL

ENGINE REACTION:None

VERIFICATION:Key Cycle

NOTE: The supply voltage circuit is networked internal of the Aftertreatment Control Module (ACM). This circuit supplies voltage to the Coolant Valve, Purge-in-process indicator (if equipped), and the Inlet NOx sensor. A short to power on any one of those circuits will set this fault code.

PROBABLE CAUSES:1. Coolant valve connector/harness.2. Failed ACM (Aftertreatment Control Module).