Join Date: Jun 2010
Thanked 3 Times in 3 Posts
Feedback Score: 10 reviews
What year is it?
05-06, the temp gauge goes to the gauge cluster, and then another wire from the cluster activates the fan relay.
Ergo the temp signal is reaching the cluster and being interpreted correctly by the processor... and the relay wire out is fine too...
Which basically means that your LCD is shot. Does it display anything? E.g. dashed line like when you start it cold? Or just blank?
Probably some BCD-7seg little driver chip in there that popped - you could always hook a meter up to the temp signal coming in, to verify all of this.