Hi all,

Trying to sort out the problem with my A/C pump, the light on the dash comes on, the belt to the clutch is spinning with the outer pulley, but the clutch is not engaging, I have 5 Bar of pressure in the system (seems to be normal) and have measured the coil on the compressor and its ~4 ohms (again seems to be normal) the voltage to the pump is only 9.2 volts andddd......its like that all the time regardless of a/c on or off or even without keys in the ignition!

is there a relay somewhere thats possibly failed? I have looked for wiring diagrams but not found anything

Its a 2005 TD6