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DTC NO. DTC DETECTION CONDITION TROUBLE AREA P0014 P0024 Exhaust valve timing is not adjusted in valve timing advance range (2 trip detection logic) Valve timing Oil control valve (OCV) (for exhaust side Camshaft timing exhaust gear assembly ECM P0015 P0025 Exhaust valve timing is not adjusted in valve timing retard range (1 trip detection logic) Valve timing Camshaft timing exhaust gear assembly ECM MONITOR DESCRIPTION The ECM optimizes the exhaust valve timing using the VVT (Variable Valve Timing) system to control the exhaust camshaft. The VVT system includes the ECM, Oil Control Valve (OCV) and VVT controller. 1. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the exhaust 2. 1UR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015,... |