Cooling fan jeep cherokee

Jeep Cherokee Electric Cooling Fan Diagnosis & Repair

All MJ sand XJ vehicles equipped with a 4.0L engine that have air-conditioning and/or heavy duty cooling are also equipped with an auxiliary electrical fan. The fan is controlled by a relay mounted on the left inner fender panel. A switch attached to the radiator outlet tank above the radiator lower hose senses engine coolant temperature. When coolant temperature is above 190*F (88*C) the switch closes allowing current from the ignition switch to flow through the fan relay to ground activating the relay. When the relay is activated battery voltage is supplied to the fan causing it to operate. When coolant temperature is below 190*F (88*C) the switch is open preventing the relay from being grounded and the cooling fan from being energized.

When the air-conditioning is used the engine ECU grounds the A/C relay coil allowing current to flow through it. This activates the A/C relay which then supplies current to the A/C clutch, fan diode assembly and cooling fan relay. The cooling fan relay is activated and the fan operates. When ever the air-conditioning is used, regardless of engine coolant temperature, the auxiliary electric cooling fan operates.

Auxiliary Electric Cooling Fan Removal

The auxiliary fan is attached to the radiator upper crossmember behind the radiator.

1. Remove fan retaining screws from radiator upper crossmember (Fig. 41).
2. Disconnect the electric fan connector.
3. Lift fan straight up out of vehicle.

Auxiliary Cooling Fan Installation

1. Align lower retaining tabs of fan shroud with slots in bracket at bottom of radiator and push fan down into position.
2. Tighten the mounting screws to 4.07 N•m (36 in- lbs).
3. Connect auxiliary cooling fan electrical connector.

AUXILIARY ELECTRIC COOLING FAN MOTOR INOPERATIVE

Equipment Required:

Test Procedures For Vehicle Equipped With Air Conditioning

(1) Auxiliary Fan Operation:

• Remove fan relay which is mounted to left inner fender panel (Fig. 42).
• Using a jumper wire with an In-line 25 amp fuse, supply battery voltage to terminal 4 of the relay con- nector (Fig. 43):
• If fan operates, the motor is good. Proceed to (2).
• If fan motor does NOT operate, check continuity between terminal 4 of the relay connector (Fig. 43) and body ground connections on the fender panel back from the relay connector (Fig. 42). If continuity exists replace the fan motor. If continuity is not found repair open and retest.

• With fan relay removed turn the ignition switch to the RUN position.
• Check continuity between terminal 5 of the relay connector (Fig. 43) and the body ground con- nections on the fender panel back from the relay con- nector (Fig. 42). If continuity exists proceed to next step. If continuity is not found repair open.
• Using jumper wire with In-line 25 amp fuse, jump across terminals 1 and 4 of the relay connector. If the fan motor operates proceed to next step leaving the jumper wire in place. If the fan motor does not operate repair fan relay fuse link. Refer to Wiring diagrams for circuit diagram.
• Check for battery voltage at terminal 2 of fan relay connector (Fig. 43).
• Connect a jumper wire across the radiator temperature switch harness connector. If fan operates proceed to next step. If fan does not operate replace radiator temperature switch once the engine has cooled down.
• Check for battery voltage at terminal 2 of the fan relay connector (Fig. 43). If battery voltage is not present replace the fan diode assembly.

Fan Inoperative When Air Conditioning Compressor Operates

With engine running, A/C on, and fan relay removed, check for battery voltage at terminal 2 of fan relay connector (Fig. 43). Replace fan diode assembly (Fig. 42) if battery voltage is not present. If battery voltage is not present perform (1) and (2) above.

Fig. 43 Auxiliary Fan Relay Connector

Vehicle Not Equipped With Air Conditioning

(1) Auxiliary Fan Operation:

• Remove fan relay which is mounted to left inner fender panel (Fig. 44).
• Using a jumper wire with an In-line 25 amp fuse, supply battery voltage to terminal 4 of the relay connector (Fig. 43): • If fan operates, the motor is good. Proceed to (2). • If fan motor does not operate, check continuity between terminal 4 of the relay connector (Fig. 43) and body ground connections on the fender panel back from the relay connector (Fig. 44). If continuity exists replace the fan motor. If continuity is not found repair open and retest. (

• With fan relay removed turn the ignition switch to the RUN position.
• Check continuity between terminal 5 of the relay connector (Fig. 43) and body ground connections on the fender panel back from the relay connector (Fig. 44). If continuity exists proceed to next step. If continuity is not found repair open.
• Using jumper wire with In-line 25 amp fuse, jump across terminals 1 and 4 of the relay connector (Fig. 43). If the fan motor operates proceed to next step leaving the jumper wire in place. If the fan motor does not operate repair fan relay fuse link. Refer to Wiring diagrams for circuit diagram.
• Check for battery voltage at terminal 2 of fan relay connector (Fig. 43).
• Connect a jumper wire across the radiator temperature switch harness connector. If fan operates proceed to next step. If fan does not operate replace radiator temperature switch once the engine has cooled down.
• Check for battery voltage at terminal 2 of the fan relay connector (Fig. 43). If battery voltage is not present replace the fan diode assembly.

If you have pics of your own repairs or can suggest other methods — please contribute your ideas (and pictures) to this article!

Revised on: January 9th, 2007

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The 9 Best Cooling Fan 2001 Jeep Cherokee

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Nowadays, there are so many products of cooling fan 2001 jeep cherokee in the market and you are wondering to choose a best one. You have searched for cooling fan 2001 jeep cherokee in many merchants, compared about products prices & reviews before deciding to buy them.

You are in RIGHT PLACE.

Here are some of best sellings cooling fan 2001 jeep cherokee which we would like to recommend with high customer review ratings to guide you on quality & popularity of each items.

TYC 620560 Jeep Cherokee Replacement Radiator/Condenser Cooling Fan Assembly

Electronic Radiator Cooling Fan Clutch Fit For 1987-2001 Jeep Cherokee 620-001

Genuine Chrysler Parts 52028337AC Radiator Cooling Fan Assembly

Sunbelt Radiator Cooling Fan Assembly For Jeep Cherokee CH3115106 Drop in Fitment

Hayden Automotive 3651 Adjustable Thermostatic Fan Control

Santech Industries MT0532 RADIATOR FAN REL

GMB 920-2380 Engine Cooling Fan Clutch

Hayden Automotive 3680 Rapid-Cool Thin-Line Electric Fan

Hayden Automotive 3652 Preset Thermostatic Fan Control

TYC 620560 Jeep Cherokee Replacement Radiator/Condenser Cooling Fan Assembly

• OE-comparable, perfectly balanced unit ensures ease of installation
• Unitized replacement unit with fan, motor, and shroud maximizes efficiency in replacement
• TYC 620560 is replacement only for the electric type fan and not for the clutch type fan
• All units are test-fitted onto the corresponding radiators prior to release to ensure precise, consistent fit
• Legal compliance through patent license agreements with Bosch/Continental VDO (where applicable) for turbine-like blade and shroud designs, providing an additional level of confidence and protection

Electronic Radiator Cooling Fan Clutch Fit For 1987-2001 Jeep Cherokee 620-001

• Perfect fits: for 1987-2001 Jeep Cherokee 4.0L L6 engine
• for 1987-1992 Jeep Comanche 4.0L L6 engine
• for 1987-1990 Jeep Wagoneer 4.0L L6 engine
• Interchange part number: 620-001
• 620001
• 674-144, CH3112101, 620540.Material: Plastic
• Color: Black
• Geometrically designed plastic blades for optimal circulation and uniform balance
• High fiberglass content offers extra strength and rigidity while improving thermal stability
• Plug and Play,easy to replacement

Introductions:
Autoforever Radiator Cooling Fan & Motor Assembly geometrically designed plastic blade for optimal circulation and uniform balance. And it comes with proper plug for trouble free installation. Produced by the fine workmanship and sophisticated technology, it will work well for your car. What is more, the shroud designed to ensure structural integrity and endurance for maximum performance. It is simple design, easy for you to install and operate.

Features:
1. Durable and reliable material makes it can be used for a long time
2. An important car part
3. New, not rebuilt, electric motor
4. Replace original assemblies that are melted or worn out
5. They have been tested before delivery
6. Portable and simple design, easy for you to install and operate

Specifications:
1. Material: Plastic
2. Main Number: 620-001
3. Other Numbers: 674-144, CH3112101, 620540
4. Compatible Vehicle:
For 1987-2001 Jeep Cherokee
For 1987-1992 Jeep Comanche
For 1987-1990 Jeep Wagoneer

Package Includes:
1 x Radiator Cooling Fan & Motor Assembly

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How to Troubleshoot the Jeep Grand Cherokee’s Cooling Fan

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. If the cooling fan stops working, most do-it-yourself mechanics can troubleshoot it in a few minutes and decide what component needs replaced.

Step 1

Open the driver’s side door. Pull the cover from the fuse box on the end of the panel. Using the fuse diagram on the inside of the cover, locate the fuse for the cooling fan and remove it with needle-nose pliers. If the metal link inside the fuse is broken, replace the fuse. If the fuse link it not broken, re-install the fuse and cover.

Step 2

Remove the cover for the power distribution block in the engine compartment, toward the firewall on the driver’s side. Using the diagram on the inside of the distribution cover, locate the 40 Amp fuse. Pull the fuse with needle-nose pliers. If the metal link inside the fuse is broken, replace the fuse. If the fuse link is not broken, re-install the fuse and cover.

Step 3

Unplug the electrical connector running to the fan motor, which is in the middle on the rear of the fan shroud.

Step 4

Attach a fused jumper wire to the terminal on the cooling fan that is more exposed after unplugging the electrical connector. Connect the other end of the jumper wire to the positive battery terminal. Attach another jumper wire to the other terminal, connecting it to the negative battery terminal. If the fan does not operate, continue troubleshooting.

Step 5

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.

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