Editing VVC Information (section)

==VVC Failure Modes==
ECT Sensor low/error limits to 6K RPM

MAP Sensor error limits to 6K RPM

VVC Oil Temp Sensor low/error limites to 6K RPM

VVC Solenoid low resistance (should be 6.6 to 8.8 Ohms) limits to 5.5K RPM 

ECU VVC control circuit fried (from wrong battery polarity) limits to 5.5K RPM 

Cam Position Sensor limits to 5.5K RPM (The VVC CPS is NSC000010 variable reluctance, different to the standard K16 Hall effect)


Excellent write up on the S1 EU2 VVC MEMS 2J logic and failure modes here * http://www.mgfcar.de/library/ENGINE_MANAGEMENT_SYSTEM_VVC_MEMS_2J.htm

Excellent write up on the EU3 VVC MEMS 3 logic (which the S2 K4 is based on) and failure modes here * 
http://www.mgfcar.de/library/ENGINE_MANAGEMENT_SYSTEM_%20MPi_VVC_MEMS_3.htm


Note: Connecting the battery on wrong polarity can blow the K4 ECU VVC control circut, as can running with a low resistance solenoid. Lotus issued a service note on this.

http://wiki.seloc.org/images/a/a2/VVC_Solenoid_SB.jpg