1999 Jeep Cherokee electric fan

1999 JEEP CHEROKEE
65,000 MILES • 6 CYL • 4WD • AUTOMATIC
Avatar
MPMD1109
  • MEMBER
  • 1 POST
electric cooling fan runs all the time, even when engine is turned off. Doesn't matter if engine is cold or hot.
Dec 13, 2009 at 10:20 AM
Advertisement
Avatar
JDL
  • ✓ASE Certified Mechanic
  • 16,098 POSTS
  • ASE Certified Mechanic
welcome to the forum, there should be a fan relay in the power distribution center. Pulling the relay should kill the fan? If you have a digital multimeter or led testlite, you can check voltage circuit at the relay. Voltage to load side of relay is hot all the time. Voltage to coil side of relay, goes hot with the key on, That circuit should not be hot with the key off. Also, the pcm controls the coil ground in order to energize the relay.
Dec 13, 2009 at 2:29 PM
Join 2CarPros for free, one of the most advanced car repair communities on the internet. From first-time drivers to seasoned mechanics, everyone is welcome to reply, share details, and get better answers. You can add a temporary image or video first; uploads are limited to 20 MB.
Ask a Free Question
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.