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Brake warning light, linked to ECM?

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Old Nov 24, 2019 | 08:27 AM
  #1  
Handy_man91's Avatar
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From: Texas
Car: 85 firebird
Engine: 305
Transmission: 700r4
Brake warning light, linked to ECM?

Deleted the ECM on an 85 firebird, I was expecting a permanent CEL after the delete but I'm also getting a "brake" warning light. Is this also tied to the ECM? I don't rember unplugging anything tied to the brake system is what has me confused.
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Old Nov 24, 2019 | 08:33 AM
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From: Chasing Electrons
Car: check
Engine: check
Transmission: check
Re: Brake warning light, linked to ECM?

Originally Posted by Handy_man91
...but I'm also getting a "brake" warning light. Is this also tied to the ECM?
No. Check that the parking brake is dis-engaged.

RBob.
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Old Nov 24, 2019 | 08:46 AM
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Handy_man91's Avatar
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From: Texas
Car: 85 firebird
Engine: 305
Transmission: 700r4
Re: Brake warning light, linked to ECM?

Lever itself is disengaged, I'll check and see if the switch is stuck. Thank you
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Old Nov 24, 2019 | 05:17 PM
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From: Meriden, CT 06451
Car: 84 TA orig. 305 LG4 "H" E4ME
Engine: 334 SBC - stroked 305 M4ME Q-Jet
Transmission: upgraded 700R4 3200 stall
Axle/Gears: 10bolt 4.10 Posi w Lakewood TA Bars
Re: Brake warning light, linked to ECM?

I'm not sure, but what about the switch on the brake distribution block? Is the wire still connected?
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Old Nov 25, 2019 | 08:15 AM
  #5  
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From: Texas
Car: 85 firebird
Engine: 305
Transmission: 700r4
Re: Brake warning light, linked to ECM?

Yes the wire is still going to the block below the master cylinder, I didn't touch anything wiring wise except the ECM harness. I worked the park brake lever about 50 times and it went away, but now the light doesn't come on when I set the park brake. Think the switch is dead or the wire is faulty. Going to get a new switch and pull the center console.
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