Supra L6-2997cc 3.0L DOHC MFI (1998)
Oil Control Valve: Diagnostic Trouble Code Tests and Associated Procedures
DTC P1349 VVT System Malfunction
DTC P1349 VVT System Malfunction
CIRCUIT DESCRIPTION
VVT system controls the intake valve timing to proper timing in response to driving condition. ECM controls OCV (Oil Control Valve) to make
the intake valve timing properly, and, oil pressure controlled with OCV is supplied to the VVT controller, and then, VVT controller changes
relative position between the camshaft and the crankshaft.
DETECTING CONDITIONS
WIRING DIAGRAM
INSPECTION PROCEDURE
HINT: Read freeze frame data using TOYOTA hand-held tester or OBD II scan tool. Because freeze frame records the engine conditions when
the malfunction is detected, when troubleshooting it is useful for determining whether the vehicle was running or stopped, the engine warmed up or
not, the air-fuel ratio lean or rich, etc. at the time of the malfunction.
Step 1
