Why is anti lock brake light on?

Tiny
GREENCHEVYMALIBU
  • 1989 LINCOLN CONTINENTAL
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 150,000 MILES

What can test? Why is the light on? Could it be the front speed sensors?

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Wednesday, September 26th, 2012 AT 9:42 PM

7 Replies

Tiny
HMAC300
  • EXPERT
  • 45,702 POSTS

The light is on because something is either broken or bad in the antilock unit. You need a scanner to see what it is and where. You will still have brakes just not anti locks.

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Wednesday, September 26th, 2012 AT 10:02 PM
Tiny
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I also have trouble codes 39 and 72

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Wednesday, September 26th, 2012 AT 11:03 PM
Tiny
HMAC300
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72 is that your messagecenter circuit failed and 39 means your converter clutch isn't workng. You'll have to check for shorts and power on a car that old.

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Wednesday, September 26th, 2012 AT 11:08 PM
Tiny
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Are there any test procedures?

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Wednesday, September 26th, 2012 AT 11:13 PM
Tiny
HMAC300
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Ya you have to see ifyou are getting power to the tcc through the transmission. We dont' have charts for something that old. The message center could be teh center itself or a ground or not getting power. But we dont' have diagrams for that car that old.

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Wednesday, September 26th, 2012 AT 11:25 PM
Tiny
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So there is nothing I can do because of the age of the car?

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Wednesday, September 26th, 2012 AT 11:33 PM
Tiny
HMAC300
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Try to find a repair manual look in library, etc. Haynes books.

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Thursday, September 27th, 2012 AT 1:08 PM

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