anti-lock brake light

[jerry1967]

My anti-lock brake light is on. What does this mean? How do I check it? Is there a picture I can see where the problem could be?

2000 regal ls

[richtazz]

It would help to post the year and trim level of your car.

[jerry1967]

Originally Posted by richtazz

It would help to post the year and trim level of your car.

do you have your glasses on? Right below my question is the year but I do not know what you mean by trim level unless you mean LS which is my car. Thank you for looking at my question and I will be waiting for a answer.

[taillight]

Pull the trouble codes.

[BNaylor]

He'll need an ABS capable scanner which can properly read GM ABS VI System DTCs. Even scanners like the Snap On MT2500 with proper programming fail to do this properly. No problems with a GM Tech II scan tool.

Any other lights on like TRAC OFF or SVS - Service Vehicle Soon?

[jerry1967]

Originally Posted by BNaylor

He'll need an ABS capable scanner which can properly read GM ABS VI System DTCs. Even scanners like the Snap On MT2500 with proper programming fail to do this properly. No problems with a GM Tech II scan tool.

Any other lights on like TRAC OFF or SVS - Service Vehicle Soon?

No other lights are on!!

[BNaylor]

Well, it sounds like solely an ABS only problem. You can try removing the ABS fuse and then taking ignition to on. Reinsert fuse with ignition off and then start it up. Since there are no other lights like traction control related most likely a problem at the ABS modulator/motorpack assembly but I am speculating. Also, check the electrical connector at the input of the EBTCM module which is part of the ABS pump/motor. Located below the cruise control module and brake master cylinder.

If the problem persists then you will need need to get it scanned with an ABS capable scanner to determine what part is malfunctioning.

[richtazz]

Sorry, I have no idea how I missed your car description, duh!

You can physically check the wiring to the front hub's wheel speed sensors. Look for broken wires or corrosion, and you can use a DMM to measure the resistance across the two pins on the hub's connector. It should read around 1k ohms. If all that checks out, as bnaylor stated, you'll need it hooked to an ABS capable scan tool to determine your problem.

[jerry1967]

Originally Posted by richtazz

Sorry, I have no idea how I missed your car description, duh!

You can physically check the wiring to the front hub's wheel speed sensors. Look for broken wires or corrosion, and you can use a DMM to measure the resistance across the two pins on the hub's connector. It should read around 1k ohms. If all that checks out, as bnaylor stated, you'll need it hooked to an ABS capable scan tool to determine your problem.

Ok this is all new to me-could you explain what the wheel speed sensors look like or put a picture on here please?

[jerry1967]

I just had it check and they told me it was my pump motor but didn't have time to find out exactly what it was. I was told to come back later so he can find out.
What is a pump motor and can this be fix by me? Does someone have picture of it?

[BNaylor]

Normally bad wheel sensors or related wiring trigger the TRAC OFF light but with just the ABS light on I would agree with the diagnosis. It failed the first part of ABS initialization where the pump motor and solenoids are checked but before checking the wheel sensors which really is not done until the car is moving and reaches around 10 mph.

It is the main part of your ABS braking system. That part you see to the right of the brake master cylinder and to the left of the cruise control module. With all the small hydraulic lines. It also has the EBTCM module. See pic below.

[jerry1967]

[quote=BNaylor]Normally bad wheel sensors or related wiring trigger the TRAC OFF light but with just the ABS light on I would agree with the diagnosis. It failed the first part of ABS initialization where the pump motor and solenoids are checked but before checking the wheel sensors which really is not done until the car is moving and reaches around 10 mph.

It is the main part of your ABS braking system. That part you see to the right of the brake master cylinder and to the left of the cruise control module. With all the small hydraulic lines. It also has the EBTCM module. See pic below.

[/QUOT
where is the EBTCM module

[BNaylor]

Originally Posted by jerry1967

where is the EBTCM module

Where the red arrow is pointing. The first part of the ABS pump/modulator assembly. You'll see the electrical connector. Keep in mind both of thse parts will be expensive new. But either can be replaced separately. The EBTCM is the electronic brain of the operation. Pump motor is the back part you see with cylindrical part and the brake lines.

You may want to go with a used/pull. Ed Morad sells these parts.

[jerry1967]

Originally Posted by BNaylor

Where the red arrow is pointing. The first part of the ABS pump/modulator assembly. You'll see the electrical connector. Keep in mind both of thse parts will be expensive new. But either can be replaced separately. The EBTCM is the electronic brain of the operation. Pump motor is the back part you see with cylindrical part and the brake lines.

You may want to go with a used/pull. Ed Morad sells these parts.

Sorry but I do not see a red arrow, can you try again please?

[jerry1967]

Ok I see it now thank you very much!!!