01-11-11, 09:34 PM
(01-11-11, 04:56 PM)Manny link Wrote: He's good and very thorough.
Which will be why he handed it back to you unserviceable ... ?
Disconnect the cables. Apply 12v direct to the terminals on the EXUP servo for a few seconds. It should spin freely. If you get no response, the servo motor is shot.
If the servo spins, then the problem lies downstream in either the cables (check for free movement/frayed ends) or the valve itself.
Don't discount the possibility that the cables have been fitted incorrectly to the pulley. I've seen cases where they've been reversed and there's been no tacho fault code to suggest anything amiss.
