Boy just picked up an 06 Yukon Denali. ABS and TC lights were on. Scanned it and had a RF Sensor circuit code. Found the sensor unplugged. Now it know why. Plugged it back in. No more codes. All sensors reading the same speed. When pulling away from a dead stop the RF activates. Let off the gas and then it goes fine. Sets no codes. Head scratcher.
ABS RF wheel activation
- Thread starter mortten
- Start date
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Are you graphing all of the wheel speed sensors to compare them? Sometimes a dropout or inconsistency is more evident on a graph than simple numbers.
rockola1971
Full Access Member
Check that RF hub for excessive play. They get wobbly and trick the ABS into thinking that wheel is skidding and boom your ABS activates.
I graphed them. Didn’t notice a drop out but wasn’t looking that hard at that point. Looks like the hub was replaced recently. It’s tight and no rust on the hub face. I pulled the sensor. Wasn’t rust jacked. There’s a turn cv boot so I have to pull the axle. I’ll clean up the tone ring and go from there. Doesn’t appear to be a factor sensor.
