Fix Your Stuff Community Store

1994 Jeep Cherokee XJ ECM Replacement

Introduction

Replacement for an 1994 Jeep Cherokee XJ ECM. The ECM is something that can stop the engine from engaging and can become fried when working on electrical work. These older vehicles have frayed wires which can become exposed and cause a short circuit resulting in the need to replace your ECM. In order to get this replacement ECM you will need to reach out to local auto parts shops and provide the Make/Model and 2 or 4 wheel drive and Manual vs Automatic Transmission so they can help locate a replacement that fixes your vehicle. This is a step by step process, that shows how to remove the old ECM and install the new ECM.

What you need

  1. 1994 Jeep Cherokee XJ ECM Replacement, ECM: step 1, image 1 of 2 1994 Jeep Cherokee XJ ECM Replacement, ECM: step 1, image 2 of 2

    • Pull the hood latch towards you to release the hood.

    Edit

  2. 1994 Jeep Cherokee XJ ECM Replacement: step 2, image 1 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 2, image 2 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 2, image 3 of 3

    • Relieve the pressure on the hood by pushing upward.

    • Using your other hand, slide the hook to the right so it releases from the latch on the frame.

    • Use the hood strut to hold the hood open.

    Edit

  3. 1994 Jeep Cherokee XJ ECM Replacement: step 3, image 1 of 2 1994 Jeep Cherokee XJ ECM Replacement: step 3, image 2 of 2

    • Disconnect the connections from battery terminals, starting with negative, circled in blue, then positive, circled in red.

    Edit

  4. 1994 Jeep Cherokee XJ ECM Replacement: step 4, image 1 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 4, image 2 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 4, image 3 of 3

    • Remove the air filter in the first picture to have access to your ECM.

    • The air filter can be disconnected from the throttle body. The second picture shows where to loosen the gasket connected to the throttle body.

    • The third picture shows an 8mm socket being used to loosen the gasket connected to the throttle body. Remove the air filter connection and place in a safe spot.

    Edit

  5. 1994 Jeep Cherokee XJ ECM Replacement: step 5, image 1 of 2 1994 Jeep Cherokee XJ ECM Replacement: step 5, image 2 of 2

    • Loosen the bolt that tightens the gasket to the air intake

    Edit

  7. 1994 Jeep Cherokee XJ ECM Replacement: step 6, image 1 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 6, image 2 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 6, image 3 of 3

    • The three bolts that were lubricated with WD-40 will need to be removed. (Marked with red circles)

    • The best angle to access the bolts will be from the driver/front tire side. (8mm socket)

    Edit

  8. 1994 Jeep Cherokee XJ ECM Replacement: step 7, image 1 of 2 1994 Jeep Cherokee XJ ECM Replacement: step 7, image 2 of 2

    • Remove all three bolts with an 8mm socket and place the bolts in a safe place.

    Edit

  9. 1994 Jeep Cherokee XJ ECM Replacement: step 8, image 1 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 8, image 2 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 8, image 3 of 3

    • Remove the bolt from the wire harness using an 8mm socket so that the ECM is now free to replace.

    Edit

  10. 1994 Jeep Cherokee XJ ECM Replacement: step 9, image 1 of 2 1994 Jeep Cherokee XJ ECM Replacement: step 9, image 2 of 2

    • Do not attempt to remove the clips from the wiring harness. This will expose the wires and might damage them.

    Edit

  11. 1994 Jeep Cherokee XJ ECM Replacement: step 10, image 1 of 1

    • Swap the ECM.

    Edit

  12. 1994 Jeep Cherokee XJ ECM Replacement: step 11, image 1 of 1

    • Plug in the wiring harness to the ECM and tighten the bolt using an 8mm socket.

    Edit

  13. 1994 Jeep Cherokee XJ ECM Replacement: step 12, image 1 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 12, image 2 of 3 1994 Jeep Cherokee XJ ECM Replacement: step 12, image 3 of 3

    • Screw in all bolts to the frame of the vehicle.

    • Tighten the bolts till they are snug. Do not overtighten. The bolts will strip the frame and the frame is not replaceable.

    Edit

  14. 1994 Jeep Cherokee XJ ECM Replacement: step 13, image 1 of 1

    • Place the air filter gasket back on the throttle body and tighten the bolt until snug. (8mm socket)

    Edit

  15. 1994 Jeep Cherokee XJ ECM Replacement: step 14, image 1 of 1

    • Place cables back on terminals.

    • Make sure to place the positive terminal first (red circle) then the negative terminal (blue circle)

    Edit

  16. 1994 Jeep Cherokee XJ ECM Replacement: step 15, image 1 of 1

    • Wait 10 minutes after reconnecting the battery to the cables. After 10 minutes, turn the key to the ignition.

    Edit
Conclusion

To reassemble your device, follow these instructions in reverse order.

One other person completed this guide.

0 Comments

Add Comment

View Statistics:

Past 24 Hours: 0

Past 7 Days: 4

Past 30 Days: 13

All Time: 156