Electrical Problems Again!! (codes) - JeepForum.com
 
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post #1 of 11 Old 11-20-2011, 06:00 AM Thread Starter
mwalters2
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2005 WK 
 
Join Date: Jul 2009
Location: Monroe
Posts: 39
Electrical Problems Again!! FIXED!! (with pictures)

Well, I've been having the intermittent problem that many have reported. The dash lights go out occasionally (commonly attributed to a bad ignition switch). Usually, I could just restart the car and it would return to normal. But yesterday, it wouldn't fix itself. I had ordered a new ignition switch to have on-hand, so I guess I will install that today. It did eventually fix itself later on in the day though. I did a scan to pull the trouble codes while it was acting up, so I wanted to document them here:

1) U1411: IMPLAUSIBLE FUEL VOLUME SIGNAL
2) U110A: LOST COMMUNICATION WITH SCM-CAN-C
3) P0700: TRANSMISSION CONTROL SYSTEM (MIL REQUEST)
4) P0731: GEAR RATIO ERROR IN 1ST
5) U0114: LOST COMMUNICATION WITH FINAL DRIVE CONTROL MODULE
6) U140E: IMPLAUSIBLE VEHICLE CONFIGURATION RECEIVED
7) U0126: LOST COMMUNICATION WITH STEERING ANGLE SESOR
8) U1504: IMPLAUSIBLE MESSAGE DATA LENGTH RECEIVED FROM STEERING ANGLE SENSOR
9) B2100: IGNITION RUN/START INPUT CIRCUIT/PERFORMANCE
10) U0197: LOST COMMUNICATION WITH HANDS FREE PHONE MODULE

I cleared the codes, took it for a short drive, and re-scanned it. 1,2,5,6,7,&9 came back. This was during the time when the dash lights were not working.

I'll try to take some pics on how to replace the ignition module, since I haven't seen any on here. I have the PDF from one of the members, but pictures are better.


2005 Jeep Grand Cherokee Larado 4.7L
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post #2 of 11 Old 11-20-2011, 08:30 AM
JKM
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2005 WK 
 
Join Date: Dec 2008
Location: Toronto
Posts: 636
I would not bother dealing with those codes until after you replace the ignition switch. The lost connections and voltage swings as a result of the bad ignition switch may be causing some of these faults. Replace the switch, reset the all the codes and then go from there
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post #3 of 11 Old 11-20-2011, 08:32 AM
Nitrouscpe
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2006 XK Commander 
 
Join Date: Jul 2011
Location: Rineyville
Posts: 5
mine had some of the same codes!! replaced the ign switch and nothing! i too it to the dealership and there was no communication with the can b bus which is the front control module!!
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post #4 of 11 Old 11-20-2011, 08:48 AM
joeaub
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2003 TJ Wrangler 
 
Join Date: Mar 2011
Location: Welland, ON
Posts: 108
Is this the same problem I am having with my 03 TJ Rubicon? When I floor it sometimes the air bag light comes on and the gauge cluster goes dead. Needles drop to the off position and sometimes the tach just sticks where it is (at say 3000 rpm - position of when I floored it).

Ignition switch can cause this??
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post #5 of 11 Old 11-20-2011, 01:45 PM Thread Starter
mwalters2
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Join Date: Jul 2009
Location: Monroe
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Quote:
Originally Posted by JKM View Post
I would not bother dealing with those codes until after you replace the ignition switch. The lost connections and voltage swings as a result of the bad ignition switch may be causing some of these faults. Replace the switch, reset the all the codes and then go from there
JKM: That was my plan. My intention was to see which codes are attributed to a bad ignition switch.

So, I put it today, about a 45 minute job. I cleared all the codes, took it for a test drive, and presto-chango - all codes gone, except the last one dealing with the hands free module (which I've always had problems with anyway, and didn't think it was ignition related). I took some pics, so I'll make a separate post for that.

2005 Jeep Grand Cherokee Larado 4.7L
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post #6 of 11 Old 11-20-2011, 02:33 PM Thread Starter
mwalters2
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Join Date: Jul 2009
Location: Monroe
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Ok, here are the pics I took during the install. Hopefully, this will help the the next person who has to tackle this!

Here's where you start - kind of obvious:


Use a plastic trim tool to work your way under the switch bezel:


Just pull it out - it unsnaps fairly easily:


Lock cylinder exposed - remove the two T-20 screws:


Next, remove the cluster bezel - looks hard, but is super easy:


Now you can see the third and final T-20 screw - remove it:


Grab the top of the knee blocker an pull down - no screws, just some A-clips. Panel is hinged at the bottom:


Knee blocker rotated down - you can see the four A-clips:


Push the assembly in and down:


Fish it out through the opening created by the knee blocker - took about 5 minutes to figure out the correct orientation to get it out:


Remove the T-10 screw holding the ignition switch on the assembly and remove the connector:


Install new switch:


New switch is made by TRW:


This welded-in stamping (un-painted metal bracket) made it a real pain to get the unit back into position. Where took me 5 minutes to get it out, it took 15 minutes to get it back in!!


After you get it back into position (and are done swearing at that bracket), just put the screws and two bezels back in place, and you're done!

2005 Jeep Grand Cherokee Larado 4.7L
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post #7 of 11 Old 11-21-2011, 07:48 AM
BonesWK
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2006 WK 
 
Join Date: Apr 2008
Location: Wilmington
Posts: 2,022
Wow - can someone add this thread to FAQ or Write up!!

well done

Ryan
2006 Black WK Limited 4.7 4x4 QD II SOLD

Current - 2008.5 Mazdaspeed 3

If you want to achieve greatness, stop asking for permission
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post #8 of 11 Old 08-14-2013, 02:08 PM
Bwana17
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Join Date: Aug 2013
Location: Pembroke Pines
Posts: 1
Thanks for this explanation! Just finished the change out and after 3 days, no light display anymore. I will give it another few days and check to see what codes, if any are being thrown.
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post #9 of 11 Old 08-14-2013, 04:43 PM
Walt
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Join Date: Oct 2009
Location: Midland
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Quote:
Originally Posted by mwalters2 View Post
Ok, here are the pics I took during the install. Hopefully, this will help the the next person who has to tackle this!
Well done. Thank you for sharing your knowledge.

HEMI CLUB MEMBER #45; SILVER WK CLUB MEMBER #13
'08 WK GC Limited. 5.7L HEMI. Quadra-Trac II. Bright Silver Metallic. Class IV hitch.
Michelin LTX M/S tires. Fumoto oil drain valve. Billet Technology oil catch can.
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post #10 of 11 Old 08-14-2013, 09:13 PM
johngreen1234
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Location: beverly hills
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Yes. This is a great post--my thanks!
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post #11 of 11 Old 05-29-2015, 10:58 AM
joshfulton87
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Join Date: May 2015
Posts: 1
this was a lot of help thank you for the step by step and pics was great
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