P0010

DTC P0010 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 1)
DTC P0020 CAMSHAFT POSITION "A" ACTUATOR CIRCUIT (BANK 2)

HINT:
- If DTC P0010 is displayed, check the bank 1 VVT OCV.
- If DTC P0020 is displayed, check the bank 2 VVT OCV.
- Bank 1 includes cylinder No. 1, but bank 2 does not. Cylinder No. 1 is located in the front part of the engine, opposite the transmission.

CIRCUIT DESCRIPTION

DTC Detection Condition:

The Variable Valve Timing (VVT) system controls the intake camshaft to provide the optimal valve timing for every driving condition. This control is performed with signals and such conditions as intake air volume, throttle position and engine coolant temperature.

The ECM controls the Oil Control Valve (OCV) based on signals output from several sensors. The VVT controller regulates the intake camshaft angle using oil pressure through the OCV. As a result, the relative position between the camshaft and the crankshaft becomes optimal, and the engine torque improves, fuel economy improves, and exhaust emissions decrease under overall driving conditions. Also, the ECM detects the actual valve timing using the signals from the camshaft position sensor and the crankshaft position sensor, and performs feedback control. This is how target valve timing is achieved by the ECM.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Conditions:

Typical Malfunction Thresholds:

Component Operating Range:

After the ECM sends the "target" duty-cycle signal to the OCV, the ECM monitors the OCV current to establish an "actual" duty-cycle. The ECM detects a malfunction and sets a DTC when the actual duty-cycle ratio varies from the target duty-cycle ratio.

This monitor runs for 1 second (the first second of engine idle) after the engine is started.

Wiring Diagram:

Step 1:

Step 2-3:

Step 4:

INSPECTION PROCEDURE

HINT: Read freeze frame data using the hand-held tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, if the engine was warmed up or not, if the air-fuel ratio was LEAN or RICH, and other data from the time the malfunction occurred.