When Monitored

This diagnostic runs continuously when the following conditions are met:

• With the ignition on.
• No 5-Volt Supply circuit or HT Coolant Control Valve Position Sensor Signal circuit DTCs active.
  • When the PCM commands the HT Coolant Control Valve to a position it monitors the feedback from the HT Coolant Control Valve Position Sensor Signal to determine if the proper position is achieved.