2008 6.2 No Compression in two cylinders

[Crf450r420]

Obvious typo

[bobejones]

 

When did they stop using the wheel sensors to detect wheel speed difference (as in spinning)? Can't see how monitoriing the tach feed will ever show wheel slippage when the vehicle has a torque converter that is not locked up.

I misread the post thinking he meant the traction control was turning on, not a TC fault condition.

 

I also poorly worded my original post. The tach sensors at each wheel were originally used only for ABS but are now being used for traction control. I meant the ABS tach sensors at each wheel send data back to the PCM for traction controls.