2002 Monte Carlo Check engine lt
Printed From: the12volt.com
Forum Name: Car Security and Convenience
Forum Discription: Car Alarms, Keyless Entries, Remote Starters, Immobilizer Bypasses, Sensors, Door Locks, Window Modules, Heated Mirrors, Heated Seats, etc.
URL: https://www.the12volt.com/installbay/forum_posts.asp?tid=40879
Printed Date: April 27, 2024 at 11:53 AM
Topic: 2002 Monte Carlo Check engine lt
Posted By: Haku
Subject: 2002 Monte Carlo Check engine lt
Date Posted: October 14, 2004 at 3:13 PM
Ive got a customer with a 2002 Monte Carlo that I installed a remote start in about six months ago. She is having a check engine light on after remote start only if its below freezing. I have tested it, and all seems ok... any one have any ideas? She is going to leave it with me overnight next week, but I would like to have an idea of what it might be before then. Any help would be greatly appreciated. ------------- Hak
Siemens Autostart
Replies:
Posted By: Teken
Date Posted: October 14, 2004 at 3:53 PM
Can you define below freezing? -15'C - 30'C?
Regards
EVIL Teken . . .
Posted By: Haku
Date Posted: October 14, 2004 at 4:16 PM
Below freezing... 32F or 0C. ------------- Hak
Siemens Autostart
Posted By: mo12v
Date Posted: October 14, 2004 at 5:18 PM
I would want to check PASSLock unit or Resistor (if U did it that way)
I have seen the same thing happen from resistor loosing value from cold
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MO
Don't Learn from Others Mistakes
You Might Be the One That Knows.
Posted By: NismaX
Date Posted: October 14, 2004 at 8:10 PM
Hi
I would read the code with a code reader to give you a hint. I had a Olds Cutlass that kept having the light come on and it was a broken wire on the temp sensor in the rubber hose going into the intake. The autostarter install might be unrelated. Good luck!
Jon
Traveling Electronics
Posted By: Haku
Date Posted: October 22, 2004 at 8:34 AM
Ok... I had the customer drop off the car yesterday, luckily the sevice soon light was on (in the cluster). I scanned the vehicle, and no codes were stored. I used my Ease proffesional scan tool, and my snap-0n mt-2500, and still showed no codes. Both scan tools showed that the service soon light was not on. I turned the key off, then on and the light went out. I remote started it several times with no light. I left it alone for 45 minutes, then went out and started it with the remote, and the light came on right away, turned key on, light stays on, turn key off then back on and light goes off. Heres what I did, double checked my connections, removed my parking light wire (I know directed says not to use a the B+ but my other two information sources ssid the opposite) replaced my PLDATA, and reprogrammed it. Let the car sit for two hours, then started it with the remote, and the light came on right away again....I was using a pulse to the starter (factory anti-grind) which was working flawlessly, but to be sure, I ran a tach wire, and programmed the tach, waited a hour, then started it again... and of course the light came on right away again!!!! I am at a loss here.. Any help would be greatly appreciated.
Shawn
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Hak
Siemens Autostart
Posted By: mo12v
Date Posted: October 22, 2004 at 9:00 AM
If I understand it:
The Light does NOT come on with the Key, just with RS/?
R U sure the PLDATA has constant power?
Check RS connections again
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MO
Don't Learn from Others Mistakes
You Might Be the One That Knows.
Posted By: Haku
Date Posted: October 22, 2004 at 9:04 AM
Yep, its good. It only comes on with the remote start AFTER it has sat for at least 45 minutes. If you start it within that time, the light does not come on. The customer said that it did it when its cold, but I think I misundersood.. its when the car has been sitting for awhile. It seems that the BCM is causing it, and it only sets after it has "gone to sleep".. so I have wired it to unlock the doors on remote start, then start it. First time it worked, but I want to test it a few times before I call it a fix. Any other suggestions? This one is really "erking my pickle!!" Shawn ------------- Hak
Siemens Autostart
Posted By: mo12v
Date Posted: October 22, 2004 at 9:35 AM
It sounds like something (DataBuss, module, Relays) R loosing memory or not powering up on time. Usually the Factory Alarm sets within 45 seconds
If it works good with Key, then RS is still problem
If U have RS set to DisARM on RS and the DATABuss checks out, I would be looking at proper power up timing from RS
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MO
Don't Learn from Others Mistakes
You Might Be the One That Knows.
Posted By: Velocity Motors
Date Posted: October 22, 2004 at 11:15 AM
Use a relay to ground the BROWN wire off the PLDATA Use a relay to isolate the starter wire from the ignition in case your getting a bleed through voltage. Post your results ------------- Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
Posted By: Haku
Date Posted: October 22, 2004 at 11:19 AM
Hey hey Jeff.. long time. I will try those if it comes back. Just wierd that it only does it after sitting for awhile.... Shawn ------------- Hak
Siemens Autostart
Posted By: Velocity Motors
Date Posted: October 22, 2004 at 11:53 AM
Hey Shawn,yah it's been a while. Must be busy over there now with winter setting in. Same over here. With the car though, I've seen some weird stuff happen with a residual power left on the starter wire or other wires that would cause problems with the Passlock system. Try these out and see what happens.
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Jeff
Velocity Custom Home Theater
Mobile Audio/Video Specialist
Morden, Manitoba CANADA
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