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  #1  
Old 08-10-2012, 01:56 PM
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service electric brake system

My 05 grand cherokee has been sitting in my drive way for the last 4 months while I was away. I cane back to days ago and tried to start my jeep, the battery was dead. This is very strange because I have two batteries pushing about 2400 amps. I then jumped the car let it idle for 45 mins and then shut it off. That night the message 'service electric brake system and check gauges as well as the abs and traction control light lit up. I figured it was the battery after reading some posts. ' The next morning it barely started so I figured it could be something wrong with the battery so I used a tester and found out that the optima was not charging. Went to sams club and it got warrantied out for a duracell. I put the battery in cleared all the codes and it ran fine for 20 minutes until I started to accelerate and the front end made a pulsing sound from the abs and all the lights came on again.

Any ideas?
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Old 08-15-2012, 08:58 PM
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Re: service electric brake system

Anybody?
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  #3  
Old 08-15-2012, 09:31 PM
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Re: service electric brake system

Any codes stored? If it's not the battery, it could be a wheel speed sensor that is starting to act up and pulling the codes will point you in right direction.
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Old 08-15-2012, 09:42 PM
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Re: service electric brake system

yep...pull the codes and report them to us
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  #5  
Old 08-16-2012, 08:52 AM
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Re: service electric brake system

I vote for either the alternator or primary battery (depending on how you have the two batteries wired).
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Old 08-16-2012, 09:43 AM
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Re: service electric brake system

Check for oxidation at the ground connection of the battery

Good luck

Achim
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Old 08-16-2012, 12:06 PM
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Re: service electric brake system

Well the two batteries are fine got a new main battery from sams club under warranty and have the second battery disconnected for now. Reset the computer.

Will report back with the codes. For some reason the codes are not visible on my obd code reader but the hypertech can detect a few codes.
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Old 08-16-2012, 12:16 PM
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Re: service electric brake system

Not all OBD readers will pull ABS codes, and most (if not all) can not pull manufacturer specific codes.

I am guessing these are ABS related, so should be obtainable without going to the dealer.
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Old 08-16-2012, 12:21 PM
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Re: service electric brake system

Quote:
Originally Posted by Madanio24 View Post
For some reason the codes are not visible on my obd code reader but the hypertech can detect a few codes.
Depending on your OBDII reader, it may not read PENDING codes. My ScanGaugeII picks up both and is often more useful than my Actron OBDII reader from a few years back.
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Old 08-18-2012, 03:16 PM
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Have same problem with no check engine lite on. Have to get it checked to see what's wrong.
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Old 08-23-2012, 02:28 PM
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Re: service electric brake system

Dtc codes are asa follows:

8 codes. 1 - pcm u1417 , 2 FCM B1668, 3 FCM P20C1, 4 ABS C102a, 5 ABS C1043, 6 ABS U0100, 7 ABS U140e, 8 ABS C2202
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Old 08-23-2012, 04:23 PM
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Re: service electric brake system

Bump with any ideas before I take it to aamco. Checked all the grounds. Sanded down corrossion to create a nice connection.
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