How does the cooling fan work on a Jeep Grand Cherokee?
How does the cooling fan work on a Jeep Grand Cherokee?
The cooling fan in a Jeep Grand Cherokee keeps engine temperatures at the correct level by kicking on during times when the engine reaches higher-than-average temperatures. Without it, the engine can reach dangerous temperatures and damage engine components.
How to troubleshoot a jeep PWM fan relay test?
Radiator Fan Motor Circuit Wiring Diagram (1999-2003 4.0L Jeep Grand Cherokee). TIP 1: The way I’ve designed the Jeep PWM fan relay test, you’ll need a scan tool that can read live data (not a code reader), since you’ll need to keep an eye on the engine’s coolant temperature with it.
What is the PWM code for a Jeep Grand Cherokee?
This tutorial will help you to diagnose the Pulse Width Modulated (PWM) fan relay on the 1999-2003 Jeep 4.0L Grand Cherokee SUVs and/or the codes P1491 ( Radiator Fan Control Relay Circuit ). The dealer, at the time of this writing, will charge you $95 (US) to diagnose it.
Where is the temperature sensor on a Jeep Grand Cherokee?
To test the solenoid unplug the temperature sensor located between the A/C compressor and the alternator just in front of the intake manifold. If the solenoid is working properly the fan will go into Hi-speed. If there is no change in RPM of fan the solenoid or the wiring from ECM to solenoid is at fault.
What to do if your Jeep Grand Cherokee cooling fan is not working?
If the fan does not operate, continue troubleshooting. Switch the wires to the opposite terminals. If the fan still does not operate, the cooling fan motor and assembly must be replaced. If the fan does operate, the vehicle must be taken into a professional service center for testing on the PCM, which controls the cooling fan relays.
Why is my Jeep radiator not turning on?
The fan will turn on after the temperature reaches about half. Usually comes on when the car is standing still due to the small amount of air circulating through the radiator. Too many mods to list… No the AC will turn the radiator fan on to pull air across the condensor.
Can a radiator fan be turned on with a / C on?
Your electric fan WILL turn on with your A/C switched on, I was 100% certain it did BEFORE I went out to test it simply so I could say I tested it. So for clarification, I just tested it on my own rig, and the electric fan turns on with the A/C on.
The cooling fan in a Jeep Grand Cherokee keeps engine temperatures at the correct level by kicking on during times when the engine reaches higher-than-average temperatures. Without it, the engine can reach dangerous temperatures and damage engine components.
What does a fuse do on a Jeep Grand Cherokee?
Fuse box diagram (fuse layout), location, and assignment of fuses and relays Jeep Grand Cherokee (WJ) (1999, 2000, 2001, 2002, 2003, 2004, 2005). A fuse is an element for protecting the electrical system. A fuse will trip (i.e. it will blow) in the event of a failure or improper interventions in the electrical system.
When did the second generation Jeep Cherokee come out?
In this article, we consider the second-generation Jeep Cherokee (XJ) after a facelift, produced from 1997 to 2001. Here you will find fuse box diagrams of Jeep Cherokee 1997, 1998, 1999, 2000 and 2001, get information about the location of the fuse panels inside the car, and learn about the assignment of each fuse (fuse layout) and relay.
What are the switches on a Jeep Cherokee?
Instrument Cluster, Radio, Rear Wiper/Washer Switch, A/C Heater Control or Heater Control, Rear Window Defogger Switch, Extended Idle Switch, Front Fog Lamp Switch, Rear Fog Lamp Switch, Transmission Range Indicator Illumination (PRNDL), Transfer Case Switch Illumination
Where are the fuses on a 2004 Jeep Grand Cherokee?
2004 Jeep Grand Cherokee Fuse Diagrams for Junction Box in cabin and Power Distribution Center under hood 10. Radiator fan relay 40A Alldatadiy.com and Eautorepair.net are professional-grade shop manuals—period. They include wiring diagrams and technical service bulletins.
What kind of fan does a jeep diesel engine use?
The Jeep diesel radiator fan is completely different than anything you’ve seen on other engines. Instead of using an electric fan or a mechanical fan with a viscous clutch, Jeep uses a hydraulic radiator fan. The hydraulic radiator fan receives power steering fluid pressure from the power steering pump.
Can a hydraulic fan be replaced on a jeep?
The Jeep shop manual warns that: “The hydraulic fan and drive is not serviceable. Therefore any failure of the fan blade, hydraulic fan drive or fan shroud requires replacement of the fan module because the fan blade and hydraulic fan drive are matched and balanced as a system and servicing either separately would disrupt this balance.”
To test the solenoid unplug the temperature sensor located between the A/C compressor and the alternator just in front of the intake manifold. If the solenoid is working properly the fan will go into Hi-speed. If there is no change in RPM of fan the solenoid or the wiring from ECM to solenoid is at fault.
