Can B Bus - Circuit codes all over and my poor WK.... - JeepForum.com
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post #1 of 21 Old 02-28-2011, 12:19 PM Thread Starter
BAD68GTO
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Can B Bus - Circuit codes all over and my poor WK....

Okay, I have the following codes and yes I BEAT my WK to death and it sees a lot of water on the trails (okay, I floated it a few times). I have the following codes:

U0024 Can B Bus Cir Open
U1001 Can B Bus Cir Open (NEGATIVE)
U0019 Can B Bus
u0024 Can b BUS Cir Open Negative

Then these fun guys:
B223D OCM
P0571 Brake Switch
B2305 Wiper Park Switch Input Circuit
B10AB Left Blend
B10AC Right Blend (This is for HCAV)
B1BA7 OCC Class System
B1BBC OCS Neg System Weight (I get this one a few times, maybe because the Jeep flies through the air and my airbags want to go off-LMAO)

Sometimes all my gauges go CRAZY and go to zero and my radio goes out and my dash lights up like a Kwanzaa Tree. This has been going on for a few months but it still wheels well-lol.


Anyhow, my eyes are rolling to the CAN B circuit first and someone that KNOWS can tell me please is this the bridge between the computers or the computer itself? I get things under the hood nice and wet, and I know to clean and dielectric the connections, but on here not sure where to look so I can here first.

TY

Gary, AKA The WK Killer


06 WK Limited, Hemi, QD II, 4" Superlift on 33"s, fully Armored with 4XGuard, M8000 on Cradle, Superchips
08 WK 4.7, QTII, OME HD, Full Armor, BURNED TO THE GROUND
2005 Viper, Vert, DLM SE #27/50, Paxton (w/intercooler) 946 RWHP
2000 Viper GTS, 10 LB Roe+GG heads/intake+Solid Roller, near 800 RWHP on pump gas+WM
1968 GTO 467 CID Fully Ported, Roller, 5-speed
2000 E350 Van with a ZILLION miles
2009 Votes thanks to ACORN
If a conservative is down-and-out, they think about how to better their situation.
A liberal wonders who is going to take care of them.
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post #2 of 21 Old 02-28-2011, 12:33 PM
BonesWK
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Gary the way I see it, as long as it isnt on fire - you're good.

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 #3 of 21 Old 02-28-2011, 01:31 PM
CmmdrDan
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Quote:
Originally Posted by BonesWK View Post
Gary the way I see it, as long as it isnt on fire - you're good.
Good point.

If you like to fly and your airbags don't, I think I'd take them out. If this one also dies can we scatter its ashes along a long lonesome trail?
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post #4 of 21 Old 02-28-2011, 01:48 PM
Budasac
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Just a thought, but some of the things you are describing (radio and dash) sound very similar to issues people have had with the ignition switch. ( I know, random, but that seems to be common.) Just wondering if you are having multiple issues which are showing various symptoms.

I'm sure floating it didn't help (lol), but all of your issues may not be related. Again just a thought. ( I know sometimes when I'm trouble shooting I kinda get tunnel vision when I'm onto something and tend to ignore/forget about other variables.)
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post #5 of 21 Old 02-28-2011, 02:47 PM
cherrybomb05
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Quote:
Originally Posted by BonesWK View Post
Gary the way I see it, as long as it isnt on fire - you're good.
Thats very true! I think he has a fire extinguisher now though.

07 WK
10 JKUR
11 JKR
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post #6 of 21 Old 02-28-2011, 02:52 PM
meep
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I'd start cleaning or augmenting all grounds between batt, engine, ECU/BCM/etc , and multiple points on the body.
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post #7 of 21 Old 03-01-2011, 11:24 AM
JKM
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In addition to cleaning the grounds mentioned above, your ignition switch is toast. The ignition switch could be causing some of these codes since it's losing connection. It's about a $50 part and very common. This is actual electrical switch and not the key tumbler so no need to re-key it.
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post #8 of 21 Old 03-01-2011, 11:50 AM Thread Starter
BAD68GTO
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Quote:
Originally Posted by JKM View Post
In addition to cleaning the grounds mentioned above, your ignition switch is toast. The ignition switch could be causing some of these codes since it's losing connection. It's about a $50 part and very common. This is actual electrical switch and not the key tumbler so no need to re-key it.
Thanks JKM! So you feel pretty confident about this to where I should order one? I see one on Fleabay Item number: 270688403458 for $33 landed. In airport now heading out, but when I return I will pick one up if you think that is the cure to some of these issues

06 WK Limited, Hemi, QD II, 4" Superlift on 33"s, fully Armored with 4XGuard, M8000 on Cradle, Superchips
08 WK 4.7, QTII, OME HD, Full Armor, BURNED TO THE GROUND
2005 Viper, Vert, DLM SE #27/50, Paxton (w/intercooler) 946 RWHP
2000 Viper GTS, 10 LB Roe+GG heads/intake+Solid Roller, near 800 RWHP on pump gas+WM
1968 GTO 467 CID Fully Ported, Roller, 5-speed
2000 E350 Van with a ZILLION miles
2009 Votes thanks to ACORN
If a conservative is down-and-out, they think about how to better their situation.
A liberal wonders who is going to take care of them.
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post #9 of 21 Old 03-01-2011, 12:04 PM
JKM
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This will get rid of demons in your dash lights, HVAC, etc. I would start with this and clear all the codes. Hopefully this will clear up most of them. At $33 for the part definately worth it
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post #10 of 21 Old 03-10-2011, 06:53 PM Thread Starter
BAD68GTO
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Thanks and just ordered for when I get home from Thailand. I hit China, Thailand, Laos and Japan on the way home and all without seeing a single WK, but a few older Cherokees....

06 WK Limited, Hemi, QD II, 4" Superlift on 33"s, fully Armored with 4XGuard, M8000 on Cradle, Superchips
08 WK 4.7, QTII, OME HD, Full Armor, BURNED TO THE GROUND
2005 Viper, Vert, DLM SE #27/50, Paxton (w/intercooler) 946 RWHP
2000 Viper GTS, 10 LB Roe+GG heads/intake+Solid Roller, near 800 RWHP on pump gas+WM
1968 GTO 467 CID Fully Ported, Roller, 5-speed
2000 E350 Van with a ZILLION miles
2009 Votes thanks to ACORN
If a conservative is down-and-out, they think about how to better their situation.
A liberal wonders who is going to take care of them.
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post #11 of 21 Old 03-10-2011, 07:10 PM
SmallsWk
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Quote:
Originally Posted by BAD68GTO View Post
Thanks and just ordered for when I get home from Thailand. I hit China, Thailand, Laos and Japan on the way home and all without seeing a single WK, but a few older Cherokees....
What do you do for a living if you don't mind me asking? With my clearence and passport, I would LOVE to do that kind of stuff.
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post #12 of 21 Old 03-10-2011, 08:25 PM Thread Starter
BAD68GTO
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Just saw this as I showed my fiancee my Jeep since we were talking about it:

This is when I first got it-lol. No wonder I have electrical problems. I floated this Jeep too, but on another video.

As for a living, I am a porn star. Seriously, I own a small computer company that fixes laptops, desktops and sells computer/telecom/POS stuff and sit on my fat tush and do only a little anymore because I am lazy. I know a lot of you folks are younger, but all I can say that school pays off IF YOU LEARN and use it I was a business major and utilize my education daily and I am a work smarter and not harder guy. Even here I just started up a business selling amulets of Buddha and such and will be listing them on Ebay and some of them are REALLY REALLY cool and affordable ($20 landed with a necklace) and will look stateside for dealers now. Oh yes, this is in Thailand a few days ago here and I have videos of some CRAZY stuff:


Anyhow, moving 100 KM west now, 40KM from Laos to a new location for the next 5 days. GOD is good :-)

06 WK Limited, Hemi, QD II, 4" Superlift on 33"s, fully Armored with 4XGuard, M8000 on Cradle, Superchips
08 WK 4.7, QTII, OME HD, Full Armor, BURNED TO THE GROUND
2005 Viper, Vert, DLM SE #27/50, Paxton (w/intercooler) 946 RWHP
2000 Viper GTS, 10 LB Roe+GG heads/intake+Solid Roller, near 800 RWHP on pump gas+WM
1968 GTO 467 CID Fully Ported, Roller, 5-speed
2000 E350 Van with a ZILLION miles
2009 Votes thanks to ACORN
If a conservative is down-and-out, they think about how to better their situation.
A liberal wonders who is going to take care of them.
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post #13 of 21 Old 03-14-2011, 08:56 PM
mjcother
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I have some knowledge on WK wiring, the only thing on the CAN B bus that is outside the interior cabin is the FCM, it is the aluminum sheet covered module attached to the IPM (relay and fuse module on driver side of engine). The water could have gotten into the FCM or one of it's connectors, or in the IPM and just be shorting something going to the FCM. I doubt that anything is permanently damaged just by water, I have had a FCM open that was submerged in a junkyard, and the epoxy coating is pretty good.

Probably want to also look at the connector from the engine bay harness to the interior harness.


The ignition switch on a WK is part resistor network and part actual contacts, the 'Start' (PK/OR) and 'Run-Start' (PK/LG) functions are the only real contacts. All positions are sent via resistor values are sent to the Steering Control Module in the clockspring on the column via two wires (VT/OR, VT/BR). I am thinking this is 99.99% not the issue.

here is a list of everything on the CAN B bus:
FCM
SCM
SKREEM
cluster
park assist module
HVAC modules
Radio, DVD, Amp, Sat tuner
occupant restraint
occupant classification
hands free
memory seat, 3x memory mirrors
heated seats, rain sensor, overhead monitor

if you unplug any or multiple of these, it may or may not indicate something, as each item on the bus terminates the bus... but it can't hurt to try.. I am running with *only* the first four items listed above connected to the CAN B bus in my swap of a WK 5.7L into a TJ (and have no codes except ABS


-mike


Quote:
Originally Posted by JKM View Post
In addition to cleaning the grounds mentioned above, your ignition switch is toast. The ignition switch could be causing some of these codes since it's losing connection. It's about a $50 part and very common. This is actual electrical switch and not the key tumbler so no need to re-key it.
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post #14 of 21 Old 03-15-2011, 01:02 AM Thread Starter
BAD68GTO
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Quote:
Originally Posted by mjcother View Post
I have some knowledge on WK wiring, the only thing on the CAN B bus that is outside the interior cabin is the FCM, it is the aluminum sheet covered module attached to the IPM (relay and fuse module on driver side of engine). The water could have gotten into the FCM or one of it's connectors, or in the IPM and just be shorting something going to the FCM. I doubt that anything is permanently damaged just by water, I have had a FCM open that was submerged in a junkyard, and the epoxy coating is pretty good.

Probably want to also look at the connector from the engine bay harness to the interior harness.


The ignition switch on a WK is part resistor network and part actual contacts, the 'Start' (PK/OR) and 'Run-Start' (PK/LG) functions are the only real contacts. All positions are sent via resistor values are sent to the Steering Control Module in the clockspring on the column via two wires (VT/OR, VT/BR). I am thinking this is 99.99% not the issue.

here is a list of everything on the CAN B bus:
FCM
SCM
SKREEM
cluster
park assist module
HVAC modules
Radio, DVD, Amp, Sat tuner
occupant restraint
occupant classification
hands free
memory seat, 3x memory mirrors
heated seats, rain sensor, overhead monitor

if you unplug any or multiple of these, it may or may not indicate something, as each item on the bus terminates the bus... but it can't hurt to try.. I am running with *only* the first four items listed above connected to the CAN B bus in my swap of a WK 5.7L into a TJ (and have no codes except ABS


-mike
Mike, I REALLY appreciate the informative post you put up. Not only the effort, but the knowledge behind it that stood out. I am not sure what the heck is going on in my life stuck on the other side of the world and my flight is scheduled for Tokyo tomorrow and radiation is leaking into the city, so anyhow this was a nice find-lol. I will check when I get back to the USA, but at least I have a spare part if worst comes to worst-lol.

06 WK Limited, Hemi, QD II, 4" Superlift on 33"s, fully Armored with 4XGuard, M8000 on Cradle, Superchips
08 WK 4.7, QTII, OME HD, Full Armor, BURNED TO THE GROUND
2005 Viper, Vert, DLM SE #27/50, Paxton (w/intercooler) 946 RWHP
2000 Viper GTS, 10 LB Roe+GG heads/intake+Solid Roller, near 800 RWHP on pump gas+WM
1968 GTO 467 CID Fully Ported, Roller, 5-speed
2000 E350 Van with a ZILLION miles
2009 Votes thanks to ACORN
If a conservative is down-and-out, they think about how to better their situation.
A liberal wonders who is going to take care of them.
BAD68GTO is offline  
post #15 of 21 Old 03-15-2011, 07:58 AM
mjcother
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Oh, and the CAN B is the WT and WT/OR wires
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