Ignition OFF
M54 Electric Magnet Valve Clutch connector : Disconnect.
Measure resistance between 1 & 2.
Specification : Approx. 1.8 ~ 2.2 Ω
The above value is just for reference. The actual value may differ from it according to various engine condition.
Is resistance display near the specified value?
YES
Substitute with a known-good "TCCU" and check for proper operation. If the problem is corrected, replace "TCCU" and then go to "Verification of Vehicle Repair" procedure.
NO
Substitute with a known-good "EMC coil" and check for proper operation. If the problem is corrected, replace "EMC coil" and then go to "Verification of Vehicle Repair" procedure.