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Forums > > ABS\TCS lights on no acceleration
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  #1  
Old 09-25-2012, 08:22 PM
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Default ABS\TCS lights on no acceleration

I have a 2002 Altima 3.5 SE. This morning while my wife was driving our son to school the Batttery, ABS, and TCS off lights came on and the vehicle stopped accelerating. When I went and got the car the battery was dead. Changed battery hoping it was a battery or altenator problem. Vehicle started right up. With no check engine light on. But when pushing on the accelerator pedal its like there is nothing there. No revving of motor at all but the ABS and TCS off lights come on.

I've got access to a Genesis 2000 scanner. I hooked it up and ran a full diagnostics text no codes found. So then I tried running ABS diagnostics test and found no codes.

Tried searching the enternet when I found this site. I found some one talking about removing the ABS fuse. So I tried it. I removed the fuse and the ABS light stayed on but the vehicle would accelerate and run normal other than no ABS system.

While searching some more I found a bunch of people referring to jumping out the OBDII port to do a self diagnostics test of the ABS system but couldn't find the correct procedure to the right pin to jump. So i didnt mess with it so not to cause other problems.

Last edited by mybluetoy; 09-25-2012 at 08:25 PM.
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  #2  
Old 09-26-2012, 01:54 PM
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Have you tried testing the Throttle body/position sensor with an ohm meter to see if its functioning properly?
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Old 09-26-2012, 02:22 PM
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Default Yea It checked out fine

I drove the car to work this morning with the ABS fuse removed and had no problem until I almost got to work and noticed on the scanner that the voltage had gone up as the motor warmed up. It eventually got up to over 17 volts. When it reached 17.4 volts the accelerator kicks out til voltage drops back to 17.3 then resomes to normal but when voltage hits 17.4 again it drops out again.
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Old 09-26-2012, 02:52 PM
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Have you taken a look at asghar's post, it sounds very alike to the issue that you are having.


2002 Altima 3.5 se, ABS/TCS OFF lights on , No acceleration over 1500 rpm

Last edited by NissanAltima01; 09-26-2012 at 02:56 PM.
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  #5  
Old 09-26-2012, 07:54 PM
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Default high voltage

Well after a little bit more searching I decided to change alternator $190. Took about 2 1/2 hours. Something I don't ever wanna do again. It was a ***** of a tight spot! Well after getting all done I made a wish and turned the key and to my surprise all light were off and no apparent problems at this time. gonna drive it tomorrow and see how things go.
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Old 09-27-2012, 10:16 AM
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Default fixed

Well I drove the car to work today and no problems.
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Old 09-27-2012, 11:18 AM
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Well, i'm glad that worked out for you and that it was just a bad alternator.
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Old 09-27-2012, 12:51 PM
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Default over charging

It was over charging causing it to go into safe mode to keeep from frying the other electronics.
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