GeekDad

The AC does force the fan on, but there are Low Pwr and High Pwr fan relays. The Low Pwr goes through a ballast resistor (I measured 0.7 ohm). I the 4-pin relays were in 'backwards' which made me crazy for about 10 minutes. They can go in both ways as the coil is on opposing corners and the COM/NO pole are one the other corners. Whoever installed them put them in 'backwards' according the the wiring diagram.

Thanks guys - I appreciate it!

I noticed last week that my temperature gauge on my 2015 Dgdge Journey was running a little hotter than normal (from 3/8" to about 1/2"). I put the vehicle monitor in the dash om and I noticed it was running around 215°F and the radiator fan wasn't spinning. My OBDII scanner gives me the same (within ±1-2°) reading. I looked up the thermostat and it is rated for 180°F. I noticed I can FORCE the fan on by removing the 'Low Pwr' fan relay (which results in a P0480 MIL) which engages the 'High Pwr' relay. When I do so, the temperature runs around 185°F. I just looked now in the driveway and the 'Low Pwr' fan does come on at 220°F and then shuts off at 215°F. Can someone give me a sanity check that other Journeys typically run at 215-220°F and my 'gauge' (now a stepper motor) just reads slightly more? Thanks!