When the actual valve timing does not lie in {HEAD ~ a predetermined range} with respect to the target value, the ECU determines that an abnormality has occurred in the VVT, and executes {TAIL ~ a predetermined fail safe routine} 
When the actual valve timing does not lie in { HEAD ~ a predetermined range } with respect to the target value , the ECU determines that an abnormality has occurred in the VVT , and executes { TAIL ~ a predetermined fail safe routine }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL