Circuit Description

Variable Valve Timing (VVT) sensor consists of a signal plate and pick-up coil. Signal plate has 3 teeth and is mounted on each intake camshaft sprocket. VVT sensor provides feedback to ECM in order to control intake valve timing. DTC P1345 or P1350 is set when ECM does not sense VVT sensor signal during cranking for 4 or more seconds. DTC P1345 or P1350 is also set if ECM does not sense VVT sensor signal with engine speed at 600 RPM or more for 5 or more seconds. DTC P1345 or P1350 is also set if ECM senses VVT sensor signal 5 times while crankshaft rotates 2 times. DTC P1345 is for bank No. 1 (right cylinder head). DTC P1350 is for bank No. 2 (left cylinder head). Possible causes are:

• VVT sensor circuit is open or shorted.
• Defective VVT sensor.
• Defective ECM.