|
|
Content .. 1500 1501 1502 1503 ..
Last Modified: 9-16-2014 6.6 C Doc ID: RM000000XH80LHX Model Year: 2015 Model: Tundra Prod Date Range: [08/2014 - ] Title: 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015,P0024,P0025; Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1); 2015 MY Tundra [08/2014 - ] DTC P0014 Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1) DTC P0015 Camshaft Position "B" - Timing Over-Retarded (Bank 1) DTC P0024 Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 2) DTC P0025 Camshaft Position "B" - Timing Over-Retarded (Bank 2) DESCRIPTION HINT: If DTC P0014, P0015, P0024 or P0025 is present, check the VVT (Variable Valve Timing) system. The Variable Valve Timing (VVT) system includes the ECM, OCV and VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. Camshaft timing control is performed according to engine operating conditions such as the intake air volume, throttle valve position and engine coolant temperature. The ECM controls the OCV based on the signals transmitted by several sensors. The VVT controller regulates the exhaust camshaft angle using oil conditions. The ECM detects the actual exhaust valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target exhaust valve timing is verified by the ECM. 3UR-FBE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P001... |