Parking Brake and RABS Lights on Code 4

1994 FORD AEROSTAR
150,000 MILES • 3.0L • 6 CYL • RWD • AUTOMATIC
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OBXAUTOMEDIC
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OK, Hi all,

Another problem having trouble correcting.... going through the code 4 testing all was checking out till got to number 5 were is says - Measure resistance between anti-lock electronic control module harness connector Pin 6 and chassis ground, there should be a reading of greater than 12 ohms well I get nothing and it says to find and repair the ground short along Circuit 535 (LB/R). Well check wiring and all appears to be good. So if anyone knows were to look for this ground short in the circuit please let me know.

Thank Gang

Mark
Jan 20, 2015 at 7:27 PM
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CADIEMAN
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U ARE PUTTING THE VOLT METER ON OHM'S SCALE RIGHT? THEN YOUR PUTTING 1 PROBE ON PIN 6 CONNECTOR ON THE MODULE AND A GOOD GROUND ON THE BODY OR METAL. U ARE GETTING A 0.00 READING?
Jan 20, 2015 at 8:41 PM
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OBXAUTOMEDIC
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Yes I had it set at the 200 ohms scale for all resistance tests.

Ok, sounds like your saying that I should have used pin 6 on the module itself and the testing according to Mitchell1 says pin 6 on harness.
Jan 20, 2015 at 9:10 PM
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OBXAUTOMEDIC
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That should have said according to Mitchell1...
Jan 20, 2015 at 9:12 PM
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OK, So just went and check pin 6 from the control module to ground and still don't get any readings. Also I am not much on the wiring on vehicle I can do it just usually end up in some cases like this on to get it figured out. It is my personal vehicle.
Jan 22, 2015 at 10:07 AM
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HMAC300
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in pic check ground for pin6 harness wire to where I've pointed out to switch below master. if it shows zero on ohms then it' s good til there(harness) then check black wire to ground on fender or battery if that is good then I'd say it's the switch is bad. just looking at the diagram.
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Jan 23, 2015 at 12:28 PM
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OBXAUTOMEDIC
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OK, Think I did that once or twice, have gone over it so many times. But will check it again once I get a day it's not raining.

Thanks Hmac300
Jan 23, 2015 at 4:54 PM
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CADIEMAN
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sorry lost track of this question thks Hmac300
Jan 23, 2015 at 6:02 PM
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OBXAUTOMEDIC
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OK, Do I leave the harnesses plugged in? For example Pin 6 test Unplugged from Module and ABS Hydrolic Assembly I get reading of 3ohm and according to Mitchell1 it means good. Now with plugged into control unit and ground at hydrolic assembly I get over 18000ohms which according to Mitchell1 is what I should get when pin 6 on module is grounded. And on the ground(blk/wht) wire I get 3ohms and once again according to Mitchell1. Mitchell1 says 3ohms or less is good. So I guess I am a little confused to whether or not the harnesses should be plugged in or not.
Jan 25, 2015 at 1:55 PM
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ooopps,

Should be 1800ohms and Mitchell1 says if 12ohms or greater
Jan 25, 2015 at 1:58 PM
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CADIEMAN
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THERE IS ONLY ONE OHMS SCALE JUST REMOVE THE MODULE CONNECTOR AND MEASURE OHMS FROM PIN6 ON THE CONNECTOR TO GROUND KEY ON.,
Jan 25, 2015 at 3:59 PM
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OBXAUTOMEDIC
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OK, So I get 0 readings when checking harness pin 6 at module. So I'm taking it since that checks out good and the ground checks out good that the ABS Hydraulic Assembly is the culprit. Also here is a pic of my DVM and OHMS Scale and everything I read said to use the 200 ohms scale
Jan 26, 2015 at 8:55 AM
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OK, forgot to reduce image size...
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Jan 26, 2015 at 9:05 AM
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OBXAUTOMEDIC
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OK, part finally can in and put it on and lights are off.... Thanks for all your input and Mitchell1 needs to correct the test procedure.

Thanks Again

Mark
Feb 5, 2015 at 12:32 PM