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Engine, ABS and Trac Lights on - Garage reorted no error codes

 
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  #1 (permalink)  
Old 24 Apr 2012, 12:58 pm
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Default Engine, ABS and Trac Lights on - Garage reorted no error codes

I'm stuck as to what to do next!
My 2004 PT Cruiser's engine light comes on and stays on until the engine is started.
Also, the ABS and Trac lights come on and stay on even when the engine is running.
I've had a quick look at the front sensors and rings but they seem ok!
I took it to a local garage, who said they've hooked up several bits of kit but can't get any error codes!

Before i take it to another garage, is there anything else i could possibly do myself?

The garage didn't charge by the way.

What tools does a garage need to get in to the codes?

Thanks in advance
Andy
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Old 24 Apr 2012, 01:08 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

You need an OBDII scanner that check each sensor at each wheel. Only takes one sensor to set off the abs light and in turn will turn on the track light.

For your engine light, you can check which fault is turning the light on yourself. Follow the instructions on the link below.

How to retrieve fault codes.
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Old 24 Apr 2012, 02:33 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

Hi CREWZIN

Just tried the 'key dance' and got no errors, just 'done'

scratching head
Andy
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Old 24 Apr 2012, 02:46 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

Sorry, I just re-read your first post and you said the engine light comes on and stays on till the engine is started. It's supposed to do that. Mine does that and probably everybody's does it. When the engine light comes on after the engine is started is when you have a problem and a fault code is stored.
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Old 24 Apr 2012, 06:48 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

First, do the obvious and check the brake fluid level.

Next, check the fuses that are ABS related under the hood in the PDC. My 2004 has two--#2 marked "Anti-lock Brake pump (ABS)" and #7 "Anti-lock brake solenoid (ABS)".

I would also check the rear (you said you checked the fronts) ABS rings and sensors. Clean off any debree that you find. The heart of the system is under the brake master cylinder. It has its own OBD connector for the advanced system check, if you determine you need a mechanic to take over. Check for any loose connections, electrical or mechanical. I would also check the four large PCM connectors to make sure they are seated tightly. Do NOT unhook any of the electrical connections to make sure they are seated before removing the negitive battery terminal. You shouldn't unhook them anyway, I just mentioned it because some people feel they "have" to check connections by doing it that way. Also check all the exposed wires that lead to the various components for chafing or damage from road hazards, rocks, etc.

If it was me and I hadn't found anything up to this point, I would take it to someone (dealer, GOOD mechanic, etc.) that has the proper instruments to delve deeper.

I'm sure you won't, because you're obviously already concerned about it, but please don't let this go any longer than needed before resolving it.

Jerry

Last edited by wwpptc; 24 Apr 2012 at 06:50 pm.
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Old 27 Apr 2012, 02:37 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

Brilliant reply wwpptc

That at least gives me something to go at.
I took it to another garage today and was told they couldn't get any power from the diagnostics connector.
I rang the first garage and he advised me that the PT Cruiser doesn't supply any power from the connection and requires diagnostic readers with a power supply of its own.
I'm finding it very hard to find a garage that can even do a diagnostics check on it in my area (Staffordshire UK)
I'll get to work on what you advised on Sunday and report back.

Thanks again for taking the time to give such a comprehensive reply.

Andy
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Old 27 Apr 2012, 02:57 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

Just another quick question please wwpptc

Where are the four large PCM connectors located?

Thanks
Andy
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Old 27 Apr 2012, 05:32 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

Quote:
Originally Posted by AndyJay View Post
Just another quick question please wwpptc

Where are the four large PCM connectors located?

Thanks
Andy

Andy, The PCM is located directly above your brake master cylinder. The part with the "DA BRAIN" decal shown in my picture below. It's the computer that controls most of the functions in your PT. You will have four large plug-in conectors if you have an automatic transmission or three large connectors if you have a manual transmission. The connectors are released by sliding the "red" locking tabs shown in the pic below. As I said above, If it was me I wouldn't completely unplug them to check them. I would simply push firmly on them to assure myself that they are fully seated. As I also said above, if you or anyone else reading this, feels they must unplug even one of the connectors, Do NOT do so until you have removed the negative battery cable from its post. Even the smallest, tiniest arc that could be a result of the battery still being connected when you remove the connector, could result in internal damage to the circuitry of the the PCM. FYI, This phenomenon could occur to any modern auotomobile. It's not restricted to our PT Cruiser.

Jerry

PLEASE click below.
Attached Images
File Type: jpg 126.0 master cylinder, DA BRAIN, etc..jpg (67.5 KB, 46 views)
File Type: jpg 119.9 SNOW, DA BRAIN, Apollo, etc..jpg (70.0 KB, 38 views)

Last edited by wwpptc; 27 Apr 2012 at 05:35 pm.
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Old 02 May 2012, 01:32 pm
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

Just a quick update!

I've checked the PCM connectors and they seem fine (not loose).
I still need to check the fuses mentioned though.

I took the car to a local auto electical guy and he too couldn't get anything from the car.
He also said there was no power from the data link so i'm wondering why that is?
He said his reader has it's own power and the car should provide a reading as soon as he plugs it in, but nothing!

Has anyone else had this problem with getting the error code/s?

How can i check to see if the data connection isn't faulty?

Thanks guys

Andy
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Old 04 Jun 2012, 08:41 am
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Default Re: Engine, ABS and Trac Lights on - Garage reorted no error codes

Update:
Both the ABS and TRAC lights went off by themselves the other day.
This is the first time this has happened since they began to stay on.
Since then, they intermittently go off before the engine is started but sometimes come back on when driving.
I've also ecxperienced the 'juddering' of the ABS throught the brake pedal when the brake is applied (slow speeds using brakes as normal).
I don't know if this info will help to gain more help, but i hope so.

Thanks again
Andy
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