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Security light comes on while driving

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Old Apr 20, 2004 | 06:47 PM
  #1  
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From: Crown Point IN
Default Security light comes on while driving

Tried to do a search for security but got very little. Owners manual sais to take to dealer soon, yeah right, I havn't checked to see what codes have been thrown yet. I'll put them up soon. Oh yeah, I had the car shut off on me while I was driving down the road at about 50mph. I pushed in the clutch and let it out a couple time but didn't fire up. I had to turn the key off and back on then put it back in gear. It fired up and ran after that.

Any info is appreciated.
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Old Apr 21, 2004 | 05:39 PM
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From: Crown Point IN
Default Re: Security light comes on while driving (Allgonoshow)

No one has any clues yet?
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Old Apr 21, 2004 | 05:58 PM
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Default Re: Security light comes on while driving (Allgonoshow)

you probably have a security code,something like code valid but incorrect. make sure the pill in your key is clean, i ususaly have to replace the ignition lock cylinder and relearn the thsft sytem
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Old Apr 22, 2004 | 08:53 AM
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Default Re: Security light comes on while driving (Allgonoshow)

________________________________________ ________________________
Oh yeah, I had the car shut off on me while I was driving down the road at about 50mph. I pushed in the clutch and let it out a couple time but didn't fire up.
________________________________________ ________________________
Now That's Got To Be Scary..........I once had my car loose power, but it didn't stall, so I still had power steering and brakes. All kinds of messages on the DIC...Reduced Engine Power, service ABS,service Traction Control. I was lucky I was still in my neighborhood and not on the HWY. I shut the car off....waited a few minutes, and it started right back up again. I was told that one computer stopped communicating with another computer. Thankfully, it never happened again
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Old Apr 22, 2004 | 11:46 AM
  #5  
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Allgonoshow
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From: Crown Point IN
Default Re: Security light comes on while driving (vette#one)

I just had that whole thing happen too now. Reduced Engine Power, service ABS,service Traction Control. I already stated using the second key but it still comes on.

I got my codes so here goes.

For those wondering how I got these, check in the tech tips section. It tells you how to read codes with your DIC. You can also clear them out when you fix what caused it.

PCM
p1571 ASR dedired torgue-c
p1626 Theft deterent system fuel enable circuit -c (could be why it died while driving.)

TCS
u1300 Class 2 circuit shorted to ground Refer to data Link Connector system check in wiring. (hmmm thats scary!)
u1301 Class 2 circuit shorted to battery Refer to data Link Connector system check in wiring. (thats scary too!)
u1016 Loss of comm with PCM

BCM
u1255 Serial Data Line malfunction
u1096 Loss of comm with IPC
u1016 Loss of comm with PCM
u1040 Loss of comm with TCS

IPC
u1255 * above
u1016 *
u1064 Loss of comm with DCM
u1040 *
u1176 Loss of comm with RFA
u1160 Loss of comm with LDCM ( I have my fuse pulled for the driver seat)

RFA
u1255 *
u1096 *
u1064 *
u1016 *

HVAC
u1064 *
u1096 *
u1160 Loss of comm with LDCM
u1255 *

LDCM
u1255 *
u1064 *
u1016 *
u1096 *

RDCM
u1255 *
u1064 *
u1016 *
u1096 *

So it looks like I have a bad connection or a short in my data line somewhere. Guess I'll have to get out the razor blade and start opening up wire harnesses. My guess is I'll start behind the fuse block, then check the PCM harnesses plugs to make sure that they are still sealed and clean. Might even open up the PCM to check for corrosion inside. Now that I think about it, I wonder if any of those modules or the PCM is on a ciruit breaker and not a fues. I've had a breaker go bad on my 94 Z28 and go off and on a lot. I'll just have to keep you all posted.


[Modified by Allgonoshow, 10:47 AM 4/22/2004]


[Modified by Allgonoshow, 10:48 AM 4/22/2004]
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Old Apr 22, 2004 | 12:44 PM
  #6  
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Default Re: Security light comes on while driving (Allgonoshow)

________________________________________ ________________________
I just had that whole thing happen too now. Reduced Engine Power, service ABS,service Traction Control. I already stated using the second key but it still comes on.
________________________________________ ______________________
Before you start going crazy with that razor.......check behind the battery, they have been known to leak and cause damage to the vacum line and wiring harness in that area. NEXT....check behind the kick board on the passenger side for water intrusion. It has been found that if the AC "rubber utter" that extends through the fire wall is clogged, water backs up and ends up in that computer area. You can see the "rubber utter" from underneath the car, again on the passenger side, behind the battery. It extends through the fire wall and has a 90 degree elbow that points toward the ground.
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