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Posts Tagged: wheel speed sensor

GM service bulletin #PIT4683F ABS wheel speed sensor codes

ABS wheel speed sensor GM service bulletin #PIT4683F ABS wheel speed sensor codes GM has issued a service bulletin #PIT4683F to provide additional testing instructions to diagnose and fix these trouble codes related to ABS wheel speed sensor issues on the vehicles listed below: C0035 C0040 C0045 C0050 C0245 P0609 Warning about testing active wheel speed sensors An active wheel speed sensor requires power from the Electronic Brake Control Module (EBCM). When testing the sensor, you may find that the 12-volt supply voltage isn’t present and make the mistaken assumption … Read More

Toyota ABS goes off with no snow or ice

Fix Toyota ABS that goes off with no snow or ice If your ABS system activates while slowing down, but there’s not snow or ice on the road, you may think you have a bad wheel speed sensor. You might. But you should first examine the toothed “tone” ring for chips, cracks, scratches, and even rust buildup. All vehicles using a tone ring can be sensitive to those kinds of ABS problems. But it seems Toyotas are extra sensitive. As the tone ring turns, each tooth induces or interrupts (depending … Read More


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