Standard resistance
RESISTANCE SPECIFIED CONDITION
NG: REPAIR OR REPLACE HARNESS OR CONNECTOR
OK: REPLACE ECM (See REMOVAL )
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
pressure through the OCV. As a result, the relative positions of the camshaft and crankshaft are optimized, the
engine torque and fuel economy improve, and the exhaust emissions decrease under overall driving 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.
Tester Connection
Condition Specified Condition
D44-1 - D74-56 (OE1+)
Always
Below 1 ohms
D44-2 - D74-55 (OE1-)
Always
Below 1 ohms
D45-1 - D74-50 (OE2+)
Always
Below 1 ohms
D45-2 - D74-49 (OE2-)
Always
Below 1 ohms
D44-1 or D74-56 (OE1+) - Body ground Always
10 kohms or higher
D44-2 or D74-55 (OE1-) - Body ground
Always
10 kohms or higher
D45-1 or D74-50 (OE2+) - Body ground Always
10 kohms or higher
D45-2 or D74-49 (OE2-) - Body ground
Always
10 kohms or higher
2009 Toyota Tundra
2009 ENGINE PERFORMANCE Engine Control System (3UR-FBE) - Tundra