# Radiator Fan Sensor '97 Grand Caravan

**URL:** <https://community.cartalk.com/t/radiator-fan-sensor-97-grand-caravan/73351>\
**Category:** Maintenance/Repairs\
**Tags:** dodge, grandcaravan\
**Created:** [July 3, 2012, 12:53am UTC](https://community.cartalk.com/t/radiator-fan-sensor-97-grand-caravan/73351 "2012-07-03T00:53:20Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![DanTuch](https://avatars.discourse-cdn.com/v4/letter/d/8e8cbc/32.png) [@DanTuch](https://community.cartalk.com/u/DanTuch)\
**Post date:** [July 3, 2012, 12:53am UTC](https://community.cartalk.com/t/radiator-fan-sensor-97-grand-caravan/73351/1 "2012-07-03T00:53:20Z")

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How do I locate and test the radiator fan sensor for a 1997 Grand Caravan with a 3.3L SMPI V-6 engine?  
Thanks for all your wonderful help in the past.

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**Author:** ![Nevada\_545](https://sea1.discourse-cdn.com/cartalk/user_avatar/community.cartalk.com/nevada_545/32/41232_2.png) [@Nevada\_545](https://community.cartalk.com/u/Nevada_545)\
**Post date:** [July 3, 2012, 2:18am UTC](https://community.cartalk.com/t/radiator-fan-sensor-97-grand-caravan/73351/2 "2012-07-03T02:18:48Z")

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The radiator fans are controled by the Powertrain control module based on inputs from the coolant teperature sensor, A/C pressure transducer and transmission fluid temperature sensor. The easy way to check these is to monitor them with a scan tool.

You can test the coolant temp sensor and A/C pressure transducer with a volt/ohm meter but if you have no power to the fans (when the engine is hot) there is a 98% chance the fan relay has failed.

The radiator fan relay is located on the left frame rail next to the air cleaner. You can access the relay to test/replace from under the vehicle or by removing the air cleaner assembly.