Having problems with your 1994 Jeep Cherokee ?

94 jeep cherokee: check engine light code 35

\015 What does this mean? "Cooling fan relay circuit open or shorted \015\012"electric fan works when air conditioning is on.....was told the electric fan is just for air con and does not go on any other condition..is this true?\015 Posted / edited by AnonymousUser on : 30-03-2020

Answers :

No its not true,the cooling fan comes on when the coolant temp reaches a certain point it closes the switch in the temp sensor wich in turn closes the relay and powers the cooling fan,the reason it comes on with the A/C is that it's wired to bypass the temp sensor and associated relay because the A/C compressor forces the motor to work harder and the coolant temp to rise significantly faster,the relay needs to be replaced or you will overheat the motor and possibly cause serious damage.
Was able to find a code, code 35, radiator fan relay circuit open or shorted. was not able to find a code for cooling fan. if that's what you have then you should be able to replace that relay. in either case if the relay were shorted the fan would run all the time, at least unless the short made the circuit blow a fuse. if it were open it would not run at all. don't think i buy the idea that the fan inside your vehicle only runs for a/c, when you turn the selector to defrost the cabin air goes the a/c dryer to help clear humidity in the air in the car and so remove moisture from inside the windows. so even when you don't turn on the a/c the car uses an a/c function. hope that helps
Repair Help & Product Troubleshooting for 1994 Jeep Cherokee

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