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Old 05-13-2011
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RABS

Hello, I have a 97 Ranger 2wd 4 banger. The ABS light is on. I grounded the test connector and came up with 9 flashes- ' high speed sensor resistance' I replaced the sensor and it's still on with the same code. What should I do now? Thanx in advance
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Old 05-14-2011
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bump, did i put this in the right place
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Old 05-14-2011
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I don't have a shop manual for your 97 or any year Ranger that has RABS.

However, if I got a code that said the circuit resistance was high even after replacing the rear axle sensor, I would unplug and check the resistance of each of the 2 wires between the sensor and the RABS Module somewhere near the center of the dash.

A typical automotive wire in good condition with good continuity at the intermediate connectors should be 5 ohms or less. The wire color codes for the 2 sensor wires are red/pink and light green/black.

Good luck.
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Old 05-14-2011
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Thanks man. I should unplug the wires at the sensor on the diff, and at the module in the dash. Now to check resistance I only need to touch ONE end of each wire? Sorry just haven't used a multimeter very much. Do you have any idea what the resistance should be on the speed sensor?
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Old 05-14-2011
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Unplug from the sensor and the module so you can measure each wire individually. Pick one wire color, put one meter probe on one end of the wire and the other on the other end, set to resistance (ohms) and read the value. Repeat for the other wire. Each resistance should be near zero - like I said before, anything less than 5 ohms should be a good resistance value.

I don't have any specific resistance info for the 1997 rear axle sensor. For what it's worth, some EVTM's for earlier Rangers gave the value as roughly 1200 ohms. As far as I know, that same sensor was interchangeable over many, many years.
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Old 05-14-2011
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I actually just ordered a multimeter, it'll be here in a few days. Are the probes long enough to reach that far? I'm prolly gonna need two people.
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Old 05-14-2011
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Standard multimeter probes are not long enough. An extension should be easy to improvise with an alligator clip jumper. These are readily available individually or in sets or you can make your own of any length using 2 alligator clips and ordinary wire.





http://book.huihoo.com/lessons-in-el...per/EXP_2.html
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