Don't want spend another US$900 on a WICM - what is the best way to bypass? - JKowners.com : Jeep Wrangler JK Forum
 
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post #1 of 5 Old 08-07-2014, 07:33 AM Thread Starter
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Don't want spend another US$900 on a WICM - what is the best way to bypass?

Hey guys, I am from the Philippines but a big Jeep wrangler Fan.
I just registered in the forum today but has been a lurker for a long time.
I have a 2010 Jeep Wrangler JK UL Rubicon AT that experienced intermittent
start problem. I have scoured the internet and have read about the
experienced of others.

1. I have added additional ground wire - did'nt solve the problem
2. I have replaced the battery - did'nt solve the problem
3. It won't start at neutral or with a nudge of the shift lever
4. J13/M13 remove works! but problem would reappear the next day. Its a very
consistent problem. You need to turn the key to start position a few times
usually from 3-6 times before it starts.

Eventually I decided I have had enough and brought it to the dealer. They replaced
the WCIM module and reprogrammed the new keys. They charge me approx. US$900 for
parts and labor. Gave a warrantee of 6 months. For 10 months I have no problems
1 click start everytime. But now my jeep is back to its old self. It starts only
after about 3-6 turn of the key.

I don't want to spend another US$900 every 10 months.
So I was thinking of :
1. getting a wire from the battery positive (+) , then to a pushbutton switch in the dashboard
and then going to the starter solenoid.
2. Another alternative is a wire from the battery positive (+) then to a pushbutton
switch in the dashboard then to the starter relay in the fuse box.

Has anybody done something like this? Which of the 2 alternatives above do you
think is better. Would really appreciate your comments. Thank you.
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post #2 of 5 Old 08-07-2014, 07:28 PM
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Bypassing the WCM is not possible... as the engine still will not start because the PCM has not been given the "okay to start" from the WCM... the WCM is completely necessary
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post #3 of 5 Old 08-07-2014, 11:06 PM Thread Starter
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Quote:
Originally Posted by Demon View Post
Bypassing the WCM is not possible... as the engine still will not start because the PCM has not been given the "okay to start" from the WCM... the WCM is completely necessary
oops! hello demon, I was thinking of putting my key to on position then applying power (+) to the either the starter relay or the starter solenoid, this would'nt start the jeep?
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post #4 of 5 Old 08-09-2014, 07:17 AM Thread Starter
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Today, I tried looking at the starter relay. I decided to
check if I can bypass the starter from there. I placed a
B+ (12V) on the relay contact output of the starter relay (K3)
going to the fused output (40A) J17. My guess was this
line would go directly to the starter solenoid. This I did
with the key on. But I was more confused because the
bypass did'nt work. Not even a click from the starter
solenoid. So I guess a different wire goes to the starter
solenoid. Anybody has a tip?

I also tried to remove my WCM but I can't. Do I have to
remove the steering wheel to remove the wcm module?

BTW everytime I reseat IOD Main J13, my Wrangler would
work perfectly. My keyless remote entry would work, and
the jeep would start flawlessly, I can start it/ turn it off
start it again, turn it off again and there seems to be no
problem but once the jeep has traveled
a few miles, when I stop it, the keyless remote won't work
anymore and would need to turn the key a few times before
it starts over. It seems that electrical noise, disable the WCM.

Also everytime I place my key in the on position the red
security light would turn-off in a few seconds. If I use a
duplicate key without the transponder ( The one I use to
open the fueld tank cap) The security light will blink after
about 3 seconds. So I guess the transponder circuit of the
WCM is working fine.
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post #5 of 5 Old 08-13-2014, 05:07 PM
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FWIW short of all that or eevn the wcm...i just had the no start, did the ground, still had the no start/won;t hold a start and had a new key made which worked.....am stalling while driving now but not sure that is related
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