How does aux fan work?
This is where the use of an auxiliary fan enters the picture. In a nutshell, an auxiliary fan supplements the airflow and cooling that is provided by the belt-driven fan. It will be essential in drawing the extra air that is needed by the engine, especially when you are moving slow.
How do you test a radiator fan motor with a multimeter?
How to Test Radiator Fan with Multimeter
- Locate the fan on your car.
- Remove the fan motor connector.
- Identify the terminals that supply current to the motor.
- Set the multimeter to read volts by moving the rotary switch.
- Connect the multimeter probes to the terminals on the connector.
- Check the multimeter.
What happens if car condenser fan doesn’t work?
For the condenser fan, if there is no power to the fan, then check the fuses for any of them burned. If the fuses are good, then the a/c switch would need to be replaced. If there is power to the motor, then the condenser fan motor is burned up and will need to be replaced.
How do I test a fan relay with a multimeter?
Take the leads of the multimeter and connect them across the coil terminals of the relay. For a normal coil, the multimeter should read anywhere between 40Ω to 120Ω. If the coil is damaged i.e., it is open, the meter shows out of range and you have to replace the relay.
How many ohms should a radiator fan have?
There is no one value. For reference, other cars generally run about 1000 ohms around 70F, and about 600 ohms near 190F or so. When cold, around 30F, they can measure around 13K ohms to 15K ohms. The resistance declines rapidly as it heats up.
How do you know condenser fan is bad?
5 Signs Your AC Fan Motor Is Bad
- The cooling fans won’t turn on.
- The fan turns on when the AC is running, but the blades rotate slowly.
- You can hear a rattling noise coming from the condenser unit.
- It smells like something’s burning.
- Blown fuse.
How do you troubleshoot a fan motor?
Floor Fan Stopped Working? Your Troubleshooting Guide
- Check the Cord. It sounds simple, but your first step should be to make sure the cord is securely plugged in.
- Check Your Circuit Breaker.
- Check for Power to Your Outlet.
- Check the Fan Fuse.
- Replace the Cord.
- Clean the Fan.
- Grease the Motor.
- Call Customer Support.
How do you check a fan motor winding with a multimeter?
Set your multimeter to Ohms. Start by completely disconnecting the spindle motor from all power sources. Check each wire, including T1, T2, T3 and the ground wire. If the reading is infinite, your motor should be fine.