20 Most Recent 2003 Jeep Grand Cherokee Questions & Answers

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I replaced a cracked rear


  • If there are no brake lights period the check the stop switch (brake light switch)
  • This is attached to the upper part of the brake pedal itself. Should be a little wire off of it. When that goes bad the brake lights will not work at all.
  • Please note that the fuse for "brakes" is ABS only and has no bearing on the brake lights themselves working.
Regards, Tony
10/19/2021 10:35:23 AM • 2003 Jeep Grand... • Answered on Oct 19, 2021
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New warning chime comes on and will not start

It can be the issue with weak battery or faulty battery or if battery is ok,then its faulty starter causing the issue.

From start to end troubleshooting these problem i suggest you to click the link below and follow its procedure:-----

What to Do When Car Turns Over But Won't Start?

http://technoanswers.blogspot.com/2012/11/what-to-do-when-car-turns-over-but-wont.html

----------- Car starting issues?

http://technoanswers.blogspot.in/2012/02/car-starting-issues.html

------------ Car Starting Problems

http://whoisbyme.blogspot.in/2012/06/car-starting-problems.html

-------- 1991 Toyota Trecel: Engine Starts fine but dies when gets Warm?

http://whatisbyme.blogspot.in/2012/05/1991-toyota-trecel-engine-starts-fine.html

---------- 1994 Toyota Pickup: Starts fine but dies in few seconds?

http://howtobyme.blogspot.in/2012/05/1994-toyota-pickup-starts-fine-but-dies.html

--------- 1999 Chrysler Cirrus: 8 IGN Fuel Starter Fuse Blows?

http://whatisbyme.blogspot.in/2012/06/1999-chrysler-cirrus-8-ign-fuel-starter.html

----------- 2001 Toyota Camry: No start After replacing Battery?

http://whatisbyme.blogspot.in/2012/05/2001-toyota-camry-no-start-after.html

---------- 1989 Toyota Pickup Truck: Turns over but not start? http://whatisbyme.blogspot.in/2012/05/1989-toyota-pickup-truck-turns-over-but.html

-------------- Car dead and will not Start? http://whatisbyme.blogspot.in/2012/05/car-dead-and-will-not-start.html

-------- 1995 Lexus LS400: Running Hot?

http://whatisbyme.blogspot.in/2012/05/1995-lexus-ls400-running-hot.html

---------- 2001 Toyota Prius will not start? http://whatisbyme.blogspot.in/2012/05/2001-toyota-prius-will-not-start.html

--------- 1996 Jeep Grand Cherokee: Engine will not start? http://repairhelpcenter.blogspot.in/2012/06/1996-jeep-grand-cherokee-engine-will.html ------------- Mitsubishi will not start

http://www.howtorepairguide.com

---------

These will help.

Thanks.

6/7/2021 7:56:30 AM • 2003 Jeep Grand... • Answered on Jun 07, 2021
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1answer

Where the window relay is located in a 2003 jeep grand cherokee?

relay, way assume there is one? did you SCAN it yet ? got PCI comm errors. or door module errors? why not post symptoms and ask for help. that works not guessing... in 99% of all cases. WJ jeep covers all this in the FSM book, or at alldata.com ending the guessing game. fast. chapter 8 is wiring in the jeep book. next is power window . 8N- page 33 is there. theory of ops. are all windows dead, or just one, must I ask>? FSM chapter 8w-60 -2 shows, NO RELAY. it has 2 modules the driver module DDM and passenger module, fuses and motors. now the bad news. the BCM brain, sees what buttons you press, then the BCM sends a digital message stream to the MODULES the modules then do as they are told. via the PCI network. (that is how it all works with min words) so what does the shop do. well he scans first. (after checking all fuse) PDC fuse 12 , 50 amps. (first if all windows are dead) now on page 4 they show RHD and export models with no brain that is , just door switches that go to motor direct, and again not one relay, in this system.. BCM top left PCI bus below it. driver door module getting commands. (serial) look ma' no switches or relays. (usa cars) 24778773-ylqjikjamog5a0is5ho2uz3h-1-0.jpg what is inside the module is a jeep secret. the BCM does the magic where by you command driver window down and it does so automatically. this is software doing that in the BCM. a big clue if your jeep has this BCM system. show above. ill now quote the FSM book The most reliable, efficient, and accurate means to diagnose the power window system requires the use of a DRB scan tool and the proper Diagnostic Procedures manual. The DRB scan tool can provide confirmation that the PCI data bus is functional, that all of the electronic modules are sending and receiving the proper messages on the PCI data bus, and that the power window motors are being sent the proper hard wired outputs by the door modules for them to perform their power window system functions. if you dont have this option DDM ? then the fuse is blown or the switches are bad, super easy to diagnose, ask. how.
4/30/2021 11:02:29 PM • 2003 Jeep Grand... • Answered on Apr 30, 2021
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1answer

What is wrong when I pull JB Power #15 50 amp fuse the drain g

2003 jeep GC, or WJ jeep, it is..? there are no 50a fuses in any JB, there are just 4 in the PDC. engine bay. so, JB is wrong, input to me. ill assume F15 is correct, and not F3/7/12 in PDC F15 feeds JB via a pink wire. (pk-wt) this main F15 feed JB , F5,7,8,9 fuse in cab. so pull fuse 5 to 9 there and the one that ends the drain is the load that is leaking, (phantom drains) easy, huh, just 4 fuse to pull. Cab box, only. called JB on all jeeps. jb fuse 5 is radio. jb fuse 7 is HVAC zone control (heat?) skim mod. & auto head lamp sensor & BCM memory, (yes lots) jb fuse 8 is (12 courtesy lamps , intrusion module(export) and VICS, vehicle info center(memory) jb fuse 9, front12vdc power outlets (cig ports modern) Cell Phone arked there? or login at alldata.com and see all that, in the wiring pages.
9/16/2019 5:19:32 PM • 2003 Jeep Grand... • Answered on Sep 16, 2019
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3answers

2005 Jeep Cherokee

What kind of Jeep (model,engine size).
Is it turning over?
Is the battery dead?
I need alot more information.
7/14/2019 9:23:45 PM • 2003 Jeep Grand... • Answered on Jul 14, 2019
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1answer

03 jeep grand cherokee flasher and turn signals dont work already replaced the main relay for them what else could I try

Look into the turn signal switch itself. Have the wiring checked.
6/26/2019 5:21:40 PM • 2003 Jeep Grand... • Answered on Jun 26, 2019
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1answer

After a short drive my jeep wont start has power no click or crank

Read this post about a lot of electrical problems. It will give you an idea on what to look for. https://www.cnet.com/forums/discussions/the-famous-jeep-grand-cherokee-electrical-problem-272172/5/ When it does not crank, check to see if voltage is getting to the starter. If it is, hit the starter. If it starts , replace it.
5/2/2019 5:21:42 PM • 2003 Jeep Grand... • Answered on May 02, 2019
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1answer

This is the first time the engine shut engine off to cool and add water until I could get to coolant. Now the jeep will not turn over. Battery is holding charge. no leak in the radiator. Took to Autoz

When you say the jeep will not turn over, you mean that it will not crank? If that is so then you may have a bad starter or coolant may have filled a cylinder with water. Pull out the spark plugs and see if it will crank over, check to see if water comes out of the heads when cranking. If it still does not turn over, check the starter.
4/22/2019 8:34:24 PM • 2003 Jeep Grand... • Answered on Apr 22, 2019
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1answer

2003 jeep grand cherokee power cuts out when

chech at workshop
3/16/2019 6:00:27 PM • 2003 Jeep Grand... • Answered on Mar 16, 2019
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1answer
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The jeep 2.7 diesel,s glow plug, relay wiring K152 wt is connected somewhere at C102 where is it located?

Some fixya user told me a website reliable-store it is very good.. I used it to repair my shredder it had some spark issue which wasn't easily fixed. you can go there and try
3/2/2019 9:12:48 AM • 2003 Jeep Grand... • Answered on Mar 02, 2019
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1answer

2003 jeep grand cherokee. I have engine check

Unfortunately, the relay may be located inside the transmission. Try utube if you have not already. If you need further help, reach me via phone at https://www.6ya.com/expert/gary_9c859f4aa7e5ab10
2/21/2018 1:30:42 AM • 2003 Jeep Grand... • Answered on Feb 21, 2018
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1answer

I have a 2003 jeep grand cheerokee Laredo when you

Have them check your fuel filter, may be time to change- please also google the jeep to see if this is common!? Good Luck Stevo!!
1/14/2018 1:19:57 PM • 2003 Jeep Grand... • Answered on Jan 14, 2018
0answers
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I have a 2003 jeep grand cherokee with error codes po122 and po107. i recently changed the throttle position sensor and cleaned out throttle body yet still have error codes. the car runs rough at ti

code p 0122 causes are wiring short to ground , TP/APP sensor --ECM or also wiring open/ short to ground / short to positive TP/APP---ECm so check the wiring and connections code p 0107 is map and /or BARO sensor --low input===causes ---wiring short to ground ---MAP sensor ---BARO sensor--ECM
12/23/2017 7:29:09 AM • 2003 Jeep Grand... • Answered on Dec 23, 2017
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1answer

The rear passenger window fell (slipped down) when

remove door panel and check to see if glass is attached to bar that raises the window up and down as they do come loose I would use a good glue check with the window repair for some so you get the right stuff
12/2/2017 4:56:22 AM • 2003 Jeep Grand... • Answered on Dec 02, 2017
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2answers

Jeep grand cherokee 2.7 crd

DTC P0243 - Turbo/Super Charger Wastegate Solenoid A
Description: Open or shorted condition detected in the turbocharger wastegate solenoid control circuit.


Here is the flow chart for that code (some images could need to clicking for zoom)...

P0243-WASTEGATE PRESSURE CONTROL PWM

zjlimited_337.gif

For a complete wiring diagram Refer to Section 8W.

When Monitored: When the ignition is on.
Set Condition: The ECM detects an open or short circuit in the Wastegate solenoid circuit.

Possible Causes
DAMAGED WIRING HARNESS OR CONNECTORS
WASTEGATE SOLENOID
(F504) FUSED IGNITION SWITCH OUTPUT OPEN
(K139) WASTEGATE SOLENOID DRIVER CIRCUIT OPEN
(K139) WASTEGATE SOLENOID CIRCUIT SHORTED TO GROUND
(K139) WASTEGATE SOLENOID DRIVER SHORTED TO VOLTAGE
(K139) WASTEGATE SOLENOID DRIVER CIRCUIT SHORTED TO ANOTHER CIRCUIT
ECM
INTERMITTENT CONDITION

Always perform the Pre-Diagnostic Troubleshooting procedure before proceeding. (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)

Diagnostic Test
1. DAMAGED WIRING HARNESS OR CONNECTORS

zjlimited_338.gif

Turn Ignition off.
Disconnect the ECM harness connectors.
Disconnect the Wastegate Solenoid harness connector.

NOTE: Check connectors - Clean/repair as necessary.


Are any wires or pins damaged?

Yes
Repair or replace any damaged wire or connectors.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

No
Go To 2


2. WASTEGATE SOLENOID

zjlimited_339.gif

Reconnect the ECM harness connector.
Reconnect the disconnected Wastegate Solenoid harness connector.
Turn the Ignition on, engine not running.
Disconnect the Wastegate Solenoid harness connector.
Connect an incandescent test light across the supply and driver pins at the Wastegate Solenoid harness connector.

NOTE: The ECM will perform a self check of the circuit after approximately 30 seconds, which should light the incandescent test light.


Does the light illuminate brightly after 30 seconds of being connected?

Yes
Replace the Wastegate Solenoid.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

No
Go To 3


3. (F504) FUSED IGNITION SWITCH OUTPUT OPEN

zjlimited_340.gif

Connect an test light between the Wastegate Solenoid connector Fused ignition switch output circuit and battery negative.
Compare the test light brightness to that of a direct connection to the battery.

Does the light illuminate brightly?
Yes
Go To 4

No
Repair the open (F504) Fused Ignition switch output circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).



4. (K139) WASTEGATE SOLENOID DRIVER CIRCUIT OPEN

zjlimited_341.gif

Disconnect the ECM harness connectors.
Measure the resistance of the Wastegate Solenoid driver circuit between the Wastegate Solenoid harness connector and the ECM harness connector.

Is the resistance less than 10 Ohms?
Yes
Go To 5

No
Repair the open (K139) Wastegate Solenoid control circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).


5. (K139) WASTEGATE SOLENOID CIRCUIT SHORTED TO GROUND

zjlimited_343.gif

Measure the resistance of the (K139) Wastegate Solenoid driver circuit between the Wastegate Solenoid harness connector and battery negative.

Is the resistance less than 10 Ohms?
Yes
Repair the (K139) Wastegate solenoid circuit shorted to ground.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

No
Go To 6


6. (K139) WASTEGATE SOLENOID DRIVER SHORTED TO VOLTAGE

zjlimited_344.gif

Measure the voltage between the (K139) Wastegate Solenoid driver circuit at the Wastegate Solenoid connector and battery negative.

Is the voltage less than 1 volt?
Yes
Go To 7

No
Repair the (K139) Wastegate solenoid driver shorted to voltage.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).


7. (K139) WASTEGATE SOLENOID DRIVER CIRCUIT SHORTED TO ANOTHER CIRCUIT

zjlimited_345.gif

Measure the resistance between the (K139) Wastegate Solenoid driver circuit in the ECM harness connector and all other circuits in the ECM harness connectors.

Is the resistance less than 10 Ohms?
Yes
Repair the (K139) Wastegate solenoid circuit shorted to another circuit.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL). (Refer to 9 - ENGINE - DIAGNOSIS AND TESTING)


No
Go To8


8. WASTEGATE SOLENOID

zjlimited_346.gif
Reconnect the ECM harness connector.
Reconnect the disconnected Wastegate Solenoid harness connector.
Turn the Ignition on, engine not running.
Disconnect the Wastegate Solenoid harness connector.
Connect an incandescent test light across the supply and driver pins at the Wastegate Solenoid harness connector.

NOTE: The ECM will perform a self check of the circuit after approximately 30 seconds, which should light the incandescent test light.


Does the light illuminate brightly after 30 seconds of being connected?
Yes
Refer to the INTERMITTENT CONDITION Symptom (Diagnostic Procedure).

No
Replace the ECM.
Perform POWERTRAIN VERIFICATION TEST VER - 1 (DIESEL).

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10/5/2017 10:51:23 AM • 2003 Jeep Grand... • Answered on Oct 05, 2017
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2answers

Turning left results in a low pitched squeak at steering wheel

Power steering Belt or pump pulley. Could be that turning left puts more stress on your system then turning right and that's why you only hear it while turning left.
9/20/2017 8:30:51 AM • 2003 Jeep Grand... • Answered on Sep 20, 2017
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