Missing common ground? - Ford Bronco Forum
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post #1 of 4 (permalink) Old 05-16-2017, 02:20 PM Thread Starter
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Bronco Info: 1992 Bronco 5.0l, E40D, Electric Shift transfer, stock automatic locking hubs. bone stock.
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Missing common ground?

Bought a 1992 bronco with the 5.0 3 months ago and there's a lot of small issues. After fixing quite a few of them I'm down to one of the last, which is my Speedometer doesn't work+rear abs light is on.
I've replaced the rear sensor on the dif. but that didn't fix it, but when I took it to the car wash today the speedometer started working aswell as a few things I didn't know were broke like the switch in the driver side door that tells you if it's open and the seatbelt sensor thing. wondering if maybe it's a ground somewhere?

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post #2 of 4 (permalink) Old 05-16-2017, 04:53 PM
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Yo Ssisson,
Welcome!
See http://www.revbase.com/BBBMotor/Wd/DownloadPdf?id=9229
Go through the year, etc drill
Electrical Distribution
Ground Distribution
G200 serves Programmable Speedometer/Odometer Module (PSOM) aka Speedo, EEC Module, ABS module, Shit on fly transfer case, Speed Control Servo/Amplifier Assembly.
G200 ground is inside passenger side kick panel
..
Locations in Engine Bay pics: G100 @ LH front of engine compartment on upper radiator support-in front of WS washer/Coolant overflow tank; G101 front of fender apron-between starter relay & headlight; G200 behind RH kick panel; G103 (battery to engine) Lower RH front of engine; Same as Bronco in a 95 F Series
Source: by Ford via subford (Bill K) at Grounds by Bill Kalebaugh | Photobucket

..

Try the RABS Sekf Test for Codes
RABS Self Test Diagnostic Connector Location pic in a 92; under glove box
Source: by Jeremy M (Big '92, jermil01) @ Brake warning light will not go out.. - Ford Bronco Forum miesk5 note, use Jer's pics.

Also,, Try a Self Test for Diagnostic Trouble Codes (DTC)s by my pal, BroncoJoe19
The engine temperature must be greater than 50 F for the Key On Engine Off (KOEO) Self-Test and greater than 180 F for the Key On Engine Running (KOER) Self-Test.

See my partially recovered Bronco web site ...Will need to clean up dead links & add many more new links some day. Thanks to Mr. Schwim!
THANKS to ALL WHO SERVE!

Last edited by miesk5; 05-16-2017 at 04:57 PM.
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post #3 of 4 (permalink) Old 05-16-2017, 05:42 PM Thread Starter
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I sprayed down the underside with water, and it works again so I'm just going to thoroughly check all the wires on the underside to make sure they aren't cut anywhere

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post #4 of 4 (permalink) Old 05-16-2017, 06:27 PM
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Quote:
Originally Posted by Ssisson View Post
I sprayed down the underside with water, and it works again so I'm just going to thoroughly check all the wires on the underside to make sure they aren't cut anywhere
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Yo,
Also tap, move, and wiggle the suspect sensor and/or harness/ connector. BEWARE OF FAN, BELTS, PUL,EYS, HOT ENGINE AND a HELPER WHO MAY RUN YOU OVER. Don't ask.... Parking brake on and good to have bumper up against a solid wall or tree trunk.

See my partially recovered Bronco web site ...Will need to clean up dead links & add many more new links some day. Thanks to Mr. Schwim!
THANKS to ALL WHO SERVE!
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