Rad Fan Control Relay Circuit

The engine coolant temperature ect sensor the intake air temperature iat sensor the a c selector switch the a c refrigerant pressure sensor the vehicle speed sensor.

Rad fan control relay circuit.

As you can see from the diagrams above and below it s really a simple circuit that not only provides the proper connections to control the cooling fans but unlike the switch under the dash method you won t ever have to worry. When it comes to your jeep grand cherokee you want parts and products from only trusted brands. Radiator fan control relay harness is open or shorted radiator fan control relay circuit poor electrical connection how is the p1491 dodge code repair. Test the fan relay resistance it should be 30 70 ohms.

Start by checking the possible causes listed above. Visually inspect the related wiring harness and connectors. The electric cooling fan is controlled by the powertrain control module pcm through the cooling fan relay based on inputs from the following components. Radiator fan control relay harness is open or shorted radiator fan control relay circuit poor electrical connection how is the p1491 chrysler code repair.

Refer to code repair chart in other manuals or media. P1491 radiator fan control relay circuit. Visually inspect the related wiring harness and connectors. With the key on or engine running system voltage over 10v fan relay commanded on the powertrain control module detects a shorted or open condition in the relay control circuit.

Start by checking the possible causes listed above. Check for damaged components and look for broken bent pushed out or corroded. Each relay will control a single fan and a 30 amp fuse is recommended for each relay connection to the battery. Check for damaged components and look for broken bent pushed out or.

The vehicle computer monitors coolant temperature with a sensor located near the thermostat. The best part is our jeep grand cherokee radiator fan control relay products start from as little as 46 99. If you have a p1491 radiator fan control relay circuit trouble code this post will help you understand what it is and how to fix it. If the temperature reaches more than 223 f value depends on make model or engine of the vehicle the pcm automatically command the cooling fan relay to turn on its fan by supplying the ground to the relay.