1994 S4, ABS telltale blinking, but no codes via Freescan?

[60N4.7]

1994 S4, ABS telltale blinking, but no codes via Freescan?

 

Attached logs to this message

esprit11-10-2014.txt

espritcsv 11-10-2014.txt

[troutrou]

AFAIK Freescan only handles the engine ECU, not the ABS one...

 

Espritmon does, however.

Edited April 18, 2015 by Vince

[Bibs]

What Vince said, use Espritmon

[60N4.7]

downloading now...

 

Anyone in the know have comments on the log files in general (leand/rich, etc. etc.)?

[60N4.7]

downloaded and installled espritmon

 

Havent driven with it running yet as need to let laptop battery charge up

 

Sitting in garage and running it the only codes which come up are 41 - Brake switch open and 58 - Brake lights.

 

I did swap out the bulbs in center wing mounted brake light with LED's so am guessing at a minimum 58 is due to that..

 

Thoughts while I let laptop battery charge?

[Barrykearley]

Have you checked when you press the brake that the brake lights come on?

Abs units need to see the peddle is operational - not sure about the esprit - but a faulty switch is very common

[60N4.7]

Yes they do. 

 

hints on location, etc for the brake switch?

[Barrykearley]

On some of the old Vauxhall - they were tucked up on top of the brake pedal hinge assembly

It's likely it has two sets of contacts - one for brake lights - one to the abs unit - at least my old Astra did!!!!

A quick check with multimeter will confirm the switch

And there will be a pressure switch or sensor buried somewhere as well that you will need to find and test

[espritmania]

Sticky brake switch ??

[60N4.7]

It is always the simple things. . Removed LED's from third brake light, Removed LED's from third brake light, put in OEm ones and VIOLA!! No more flashing ABS warning light

[ramjet]

The LEDs probably caused a low resistance situation. The proper bulbs fix that.

[sanj]

I think as long as you have one incandescent bulb installed the rest can be LEDs. The ABS computer needs to be able to sense current through the filament even with the brake lights off.

Edited April 18, 2015 by sanj

[fflyingdog]

Exactly what Sanj has said