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Vanessa Burton
Vanessa Burton Posted on May 26, 2018
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2002 jeep grand cherokee laredo anti theft wiring diagram

I changed pcm and now my anti theft is on and i cant start it

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  • Jay Mar 13, 2019

    How do I reset the alarm on my key after replacing the ignition switch

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1 Answer

Larry Ng

Larry Ng

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  • Jeep Master 14,580 Answers
  • Posted on Jul 24, 2023
Larry Ng
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Joined: Apr 07, 2013
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The IMMO and PCM can not be willyynillyy swapped.
they are married by dealer programming
you did it all wrong.
what does changed PCM mean
a used one off ebay
rebuilt and the derp that sold it did not tell you it will fail not matched to IMMO
a new one from the dealer flat tells you as selected, it must be reprogrammed.

the PCM and IMMO are not PNP ,they are not plug and play ever.
and is why the car can not be stolen. (driven away with no good key)
by DESIGN and in many cases now, BY LAWS

some shops can also do this, with their JEEP license to do so, call em. ask.

5 Related Answers

Anonymous

  • 1 Answer
  • Posted on Aug 10, 2008

SOURCE: 2002 jeep cherokee laredo

the only problem that vehicle has is with cooling fans is relay/module or electrical harness to module that burns up located behind and under right front headlamp assy must remove headlamp to access relay/module that is what powers up fan motor module assy.

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garyq1970

Gary Queen

  • 85 Answers
  • Posted on Nov 15, 2008

SOURCE: change water pump

If you have any questions feel free to ask. Let me know if you dont get diagrams(happens sometimes)

0900c1528004319d.jpgReverse rotation water pump—2.5L and 4.0L engines

  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following: NOTESome 4.0L engines are equipped with a fan clutch that threads Directly on to the water pump shaft. This fan clutch is equipped with right-hand threads. NOTEDo not store the fan clutch assembly horizontally, silicone may leak into the bearing grease and cause contamination. NOTEOne of the water pump bolts is longer than the others. Note the location for reassembly.
    • Negative battery cable
    • Electric cooling fan connector
    • Accessory drive belt
    • Engine cooling fan and pulley
    • Water pump pulley
    • Power steering pump
    • Lower radiator hose from the water pump
    • Heater hose
    • Water pump and discard the gasket
To install:
  1. Clean the mating surfaces of all gasket material.
  2. Install or connect the following:
    • Water pump using a new gasket. Torque the bolts to 17 ft. lbs. (23 Nm).
    • Heater hose
    • Lower radiator hose
    • Water pump pulley. Torque the bolts to 20 ft. lbs. (27 Nm).
    • Power steering pump
    • Engine cooling fan and shroud. Torque the bolts to 31 inch lbs. (3 Nm).
    • Accessory drive belt
    • Electric cooling fan connector
    • Negative battery cable
  3. Fill and bleed the cooling system.
  4. Start the engine, check for leaks and repair if necessary.
3.7L Engine
  1. Before servicing the vehicle, refer to the precautions in the beginning of this manual.
  2. Drain the cooling system.
  3. Remove or disconnect the following:
    • Negative battery cable
    • Fan and clutch assembly from the pump
    • Fan shroud and fan assembly. If you’re reusing the fan clutch, keep it upright to avoid silicone fluid loss!
    • Lower hose
    • Water pump (8 bolts)
  4. Installation is the reverse of removal. Tighten the bolts, in sequence, to 40 ft. lbs. (54 Nm). 0900c1528004319e.jpgWater pump tightening sequence—3.7L

motor1258

Mike Butler

  • 6674 Answers
  • Posted on Feb 03, 2009

SOURCE: change a serpentine belt on 04 jeep grand cherokee laredo

Check this link & scroll down to your engine. Click on picture to expand.

http://www.autozone.com/shopping/repairGuide.htm?pageId=0900c1528004328a

ZJLimited

ZJ Limited

  • 17989 Answers
  • Posted on Apr 24, 2009

SOURCE: Distributor cap wiring diagram

Check this info... Wiring Diagrams with the graphic firing order for 6 and 8 cilinders.

Good luck!!!

Anonymous

  • 11896 Answers
  • Posted on Nov 18, 2009

SOURCE: REAR BRAKE SHOE ASSEMBLY DIAGRAM

You can go to autozone.com and register for full free online repair manual that has the diagrams you need and everything else you could want.

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Is there a way I can disconnect my anti-theft device on my 2000 jeep grand cherokee laredo with a 4.0 engine
If you have a "Chipped" key there is a work around, a box with wire leads that when you put your key in it and wire it in tell will tell the computer to dissarm the theft system. Places that sell remote start devices sell them and can install them, they are also on the web. This does defeat the anti-theft which means any key will start the vehicle making it easier to steal your Jeep
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Hi Andrew:
The 1994 Jeep Grand Cherokee Laredo Anti-Theft System is equipped with Vehicle Theft Security System (VTSS). VTSS system monitors vehicle doors, hood, liftgate and ignition. If an attempt is made to enter or operate vehicle without proper disarming of system, vehicle horn will sound, headlights, taillights and parking lights will flash, and engine will be prevented from running. I have an '93 GC 5.2L V8...

The following wiring diagram and electronics circuit contains detail schematics of The 1994 Jeep Grand Cherokee Laredo Anti-Theft System. Herein you will find interconnection between electronics parts of the system such as body control module, auto headlamp light sensor. VTSS led, driver door module, passenger door module, cylinder lock switch, junction block, power distribution center, and grounding. Herein you will learn also how the Vehicle Theft Security System works, removal, installation, testing and troubleshooting procedures.

Try HERE and also, remember that here can find the Jeep Grand Cherokee Service Repair Manual.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

Thank you for using FixYa, have a nice day.
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The 1995 Jeep Grand Cherokee Laredo Anti-Theft System is equipped with Vehicle Theft Security System (VTSS). VTSS system monitors vehicle doors, hood, liftgate and ignition. If an attempt is made to enter or operate vehicle without proper disarming of system, vehicle horn will sound, headlights, taillights and parking lights will flash, and engine will be prevented from running.

The following wiring diagram and electronics circuit contains detail schematics of The 1996 Jeep Grand Cherokee Laredo Anti-Theft System. Herein you will find interconnection between electronics parts of the system such as body control module, auto headlamp light sensor. VTSS led, driver door module, passenger door module, cylinder lock switch, junction block, power distribution center, and grounding. Herein you will learn also how the Vehicle Theft Security System works, removal, installation, testing and troubleshooting procedures.

Try HERE and also, remember that here can find the Jeep Grand Cherokee Service Repair Manual.

Hope this helps; also keep in mind that your feedback is important and I`ll appreciate your time and consideration if you leave some testimonial comment about this answer.

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Nov 25, 2011 • 1995 Jeep Grand Cherokee
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Need a complete wiring diagram '90 jeep laredo 4.0 of PCM,ignition,starting,ASD and other relay, also to see if there's any anti-theft for a crank no run problem. Fuel pressure good, injector pulse signal...
you can get a hanes book at any autoparts store.But you may want to check the tps also.
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May 08, 2010 • 1990 Jeep Cherokee Limited
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1999 Grand Cherokee Limited Jeep anti-theft system had shut all electronics down and engine will not start. what can I do to reset the system....
The 1996 Jeep Grand Cherokee Laredo Anti-Theft System is equipped with Vehicle Theft Security System (VTSS). VTSS system monitors vehicle doors, hood, liftgate and ignition. If an attempt is made to enter or operate vehicle without proper disarming of system, vehicle horn will sound, headlights, taillights and parking lights will flash, and engine will be prevented from running.

The following wiring diagram and electronics circuit contains detail schematics of The 1996 Jeep Grand Cherokee Laredo Anti-Theft System. Herein you will find interconnection between electronics parts of the system such as body control module, auto headlamp light sensor. VTSS led, driver door module, passenger door module, cylinder lock switch, junction block, power distribution center, and grounding. Herein you will learn also how the Vehicle Theft Security System works, removal, installation, testing and troubleshooting procedures.

Try HERE.

Also, remember that here can find the Jeep Grand Cherokee Service & Repair Manual.
Hope help with this.
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May 03, 2010 • 1999 Jeep Grand Cherokee
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2002 Grand Cherokee sometimes theft security feature does not recognize key(with electronic chip inside) and engine shuts off after 2 seconds, and orange light comes on in dash indicating a key with a...
This is not an easy problem to solve at home for this vehicle. Far and away the most common cause of this issue is a faulty PCM (the vehicle's main computer). Did the vehicle just start dooing this all of a sudden with both keys? Or did it begin with one key not working and now neither works?
There are several potential causes, but in my experience it usually a bad PCM, bad SKIM (anti theft module) or the SKIM needs to be reprogrammed.
You are best advised to have it towed to the dealer or a reputable garage with experience in anti theft systems on Jeeps.
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Oct 12, 2017 • 2002 Jeep Grand Cherokee
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2000 Jeep Grand cherokee Laredo wont start. Engine turn over . No noise from fuel pump with ignition on. Replaced fuel pump and filter.Turn ignition on- pump did not run.Jumped the fuel pump at the pump...
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Sep 22, 2009 • 2000 Jeep Grand Cherokee
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Wiring diagram 07 jeep laredo
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- WJ-2002-Cherokee-Service-Manual-PDF-08W-Diagrama-de-Cableado - Wiring Diagrams / Page 259 8W 47-1 and next (spanish).

Good luck!!!
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