Auto Check Solved

[Al Powell]

Well, I found the auto-check problem in my 1990 200 what Pogo would call "the 
scientifiwockle way".

Short re-cap of problem: I got the front brake pad warning even after I had 
jumpered the brake pad wires so it shouldn't be sending a warning. The alarm 
didn't show when stationary, but always showed it if the car was moving.

Solution: after carefully viewing the circuit in the Bentley, I determined 
that there is essentially one wire running through the pads, and that they're 
wired in series to ground. Any break in the circuit makes the auto-check 
warning come on.

I then used an ohmeter to check the continuity (at the LF corner) of the lead 
coming from the chassis and going to ground after passing through the RF 
corner. I suspected a break in one of the wires in the harness leading to the 
plug which connects to the brake pads.  I soon found a wire break in the LF 
harness - and by moving the wires, located it about 5" back from the LF pad. 
I cut the bad section out, saved the connector to the pads, soldered in new 
wire and put heat-shrink over the soldered connections.  Auto-check system 
now is silent and happy.

500 mile round trip starts tomorrow....followed by 2200 mile round trip 
beginning next week.  Good timing!
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Al Powell
Fort Collins, CO
powellae at home.com
cougfan1 at gocougs.wsu.edu
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