brake lining light- diagnosis , already replace sensors, don't want to pull bulb

[clydesdale]

I don't want to remove the bulb and would like to diagnose why the light is still on. There is continuity at both sensors. Plus, I changed out the sensors with other spare sensors and the light still stays on. How do I check to make sure the wiring is working properly? Thanks.

[Quadrajet]

dirty or corroded female terminals? When I bought one of my cars the PO stated the pads were done. He failed to mention the sensors were removed and the connector exposed to the elements.

[DaveSmed]

With the key on, are you getting 12v at the connector for the front sensor?

[clydesdale]

No, 12v. How do I diagnose rear problem or front problem? Thanks

[jlevie]

Check continuity from the instrument cluster's C1-21 to C2-26 pins. If there is continuity there the fault lies in the cluster. Otherwise there is a wiring fault in the sensor circuits.

[DaveSmed]

jlevie is right again, (I think hes a robot to be honest).

But, Since your already screwing around with sensors, check for 12v at the rear sensor. If its not there, there's a resistor in the cluster that is particularly fond of suddenly becoming "well-done". A 220 ohm resistor of greater wattage should fix you right up.

[clydesdale]

I did not have continuity between blue 21 and white 26. How do I tell if the wiring fault is in the front or rear?

[DaveSmed]

check for 12v at the rear sensor

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