1999 2004 Jeep Grand Cherokee Ac Heater Fan Wire Connector Repair 1999 2000 2001 2002 2003 2004 Repair Guide

Difficulty

Moderate

Steps

Time Required

                          20 - 30 minutes

Sections

1999-2004 Jeep Grand Cherokee AC/Heater Fan Wire Connector Repair
5 steps

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Back1999-2004 Jeep Grand Cherokee WJ
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Introduction

What you need

Step 1

              1999-2004 Jeep Grand Cherokee AC/Heater Fan Wire Connector Repair

Place the vehicle in park, activate the parking brake, and leave the car running.
The blower motor is located under the dash on the passenger side of the vehicle.
For easier access to the wiring push the seat back, and place your tools on the floor of the car .

Place the vehicle in park, activate the parking brake, and leave the car running.

The blower motor is located under the dash on the passenger side of the vehicle.

For easier access to the wiring push the seat back, and place your tools on the floor of the car .

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Step 2

The blower motor adapter is a bundle of three wires located on the left side.
While the vehicle’s ignition is on, push and pull gently on the wire connection.
If the blower motor turns on, you have identified the problem and following this guide will help you fix it
If the fan does not turn on, the damage may not be fixable without purchasing new parts.
For your safety do not grasp any wires you can not see. Do not attempt to grasp any wires that are not covered in insulation and/or electrical tape.

The blower motor adapter is a bundle of three wires located on the left side.

While the vehicle’s ignition is on, push and pull gently on the wire connection.

If the blower motor turns on, you have identified the problem and following this guide will help you fix it

If the fan does not turn on, the damage may not be fixable without purchasing new parts.

For your safety do not grasp any wires you can not see. Do not attempt to grasp any wires that are not covered in insulation and/or electrical tape.

Step 3

Turn off the ignition on the vehicle and proceed with the following steps.
There are two screws holding the adapter in place. Using a Phillips head screwdriver, remove both screws in order to remove and gain access to the adapter.
The two screws are identical. Be careful not to lose them.
Be sure the car is completely off before unscrewing anything.

Turn off the ignition on the vehicle and proceed with the following steps.

There are two screws holding the adapter in place. Using a Phillips head screwdriver, remove both screws in order to remove and gain access to the adapter.

The two screws are identical. Be careful not to lose them.

Be sure the car is completely off before unscrewing anything.

Step 4

The fault typically occurs at the connection between the three wires and the adapter box.
Observe the damage and decide if electrical tape will be enough to hold the wires in place.
If so, using electrical tape, wrap the wires tightly until they are securely in place.
Replacement parts are available for purchase if the damage is beyond your repair capabilities.

The fault typically occurs at the connection between the three wires and the adapter box.

Observe the damage and decide if electrical tape will be enough to hold the wires in place.

If so, using electrical tape, wrap the wires tightly until they are securely in place.

Replacement parts are available for purchase if the damage is beyond your repair capabilities.

Step 5

Screw the adapter back into place.
Turn on the car and test the AC/Heater to make sure it works.

Screw the adapter back into place.

Turn on the car and test the AC/Heater to make sure it works.

Enjoy your working AC and Heater!

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                                                                                      9 other people completed this guide.

Author

                                      with 7 other contributors

                    William Schaller

Member since: 02/24/2015

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Team

                       Cal Poly, Team 24-1, Green Winter 2015                        

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                                            4 Guides authored

cgerdes714 - Jan 22, 2018

radical, thank you for this!

ANGELO - Feb 25, 2018

Very good job - thanks for the info

I own one WJ 4.0 m1999

The ac doesn’t turn on(no lights)

Is this loose wire connection responsible for this?

rad8253 - Aug 16, 2018

good job thanks

Jessica v - May 3, 2020

Thank you this solved it for me easy simple.thank you

Gideon Attwell - Aug 15, 2022

Thanks so much for this. My heater fan was faltering when I most need the Airco to work in the European heatwave of 2022. I had a feeling it might be a loose connection because it would come alive when banging on the dashboard or hitting a bump in the road.

Followed these instructions and found a break in the connection between wire and connector in one of the wires of the adaptor. How this came to be, is a mystery but I managed to open the little female metal pin connector at the end of the wire, reattach it with fiddling and some tape en reassembled the thing. Works perfect for now. Must say the job was not too comfortable due to the strange twisting weird posture you need to reach the %#*@ thing!

Introduction#

What you need#

Team#

Introduction

What you need

Team