Troubleshooting

DTC P0011 Camshaft Position "A" - Timing Over - Advanced or System Performance (Bank 1)

CIRCUIT DESCRIPTION

DTC Detecting Condition:

VVT system controls the intake valve timing to proper timing in response to driving condition. ECM controls Oil Control Valve (OCV) 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.

MONITOR DESCRIPTION

Monitor Strategy:

Typical Enabling Condition:

Typical Malfunction Thresholds:

The ECM optimizes the valve timing using the Variable Valve Timing (VVT) system to control the intake valve camshaft. The VVT system includes the ECM, the Oil Control Valve (OCV) and the VVT controller. The ECM sends a target duty-cycle control signal to the OCV. This control signal, applied to the OCV, regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake valve camshaft.

Example:
A DTC will set if:
1. the difference between the target and actual valve timing is more than 5 degrees of the camshaft angle (CA) and the condition continues for more than 5 seconds; or
2. the OCV is forcibly activated 63 times or more.

Advanced cam DTCs are subject to "1 trip" detection logic.
Retarded cam DTCs are subject to "2 trip" detection logic.

If the difference between "target" and "actual" camshaft is larger than the specified value, the ECM operates the VVT actuator. Then the ECM monitors the camshaft timing change for 5 sec.

Wiring Diagram:

INSPECTION PROCEDURE

HINT:
- f DTC P0011 or P0012 is displayed, check right bank VVT system circuit.
- If DTC P0021 or P0022 is displayed, check left bank VVT system circuit.
- Read freeze frame data using OBD II scan tool or hand-held tester. 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 was warmed up or not, the air-fuel ratio was lean or rich, etc. at the time of the malfunction.

Step 1 - 3:

Step 4 - 6:

Step 7:

Hand-held tester

Step 1 - 2:

Step 3 - 5:

Step 6 - 7:

OBD II scan tool (excluding hand-held tester)