Operation CHARM: Car repair manuals for everyone.

Check Coolant Temp

The coolant temperature is sent to the cluster as a class 2 serial data value from the PCM/VCM. The cluster turns on the CHECK COOLANT TEMP message based on the coolant temperature. If the coolant temperature is greater than 121°C (250°F) it will be added to the message center and removed when the coolant temperature drops below 118°C (245°F).