I have a Mazda B2500, (4cyl Ford Ranger) and just all of the sudden today the ABS light turned on after the truck sat in the sun all day. Also, when driving, the speedometer is unresponsive anywhere below 50 mph, as is the odometer. While looking at the shop manual, both the ABS and Speedometer share the same sensor in the rear axel. I tried pulling the connecter and reconnecting it to see if there was a loose connection. Nothing changed. Is there anything else I should check before I replace that sensor?