Dtc
P0011 Camshaft position "a" - timing over-advanced or system performance (bank 1)
Dtc
P0012 Camshaft position "a" - timing over-retarded (bank 1)
Description
The vvt system includes the ecm, oil control valve (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 intake 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 intake valve timing using signals from the camshaft and crankshaft position sensors, and performs feedback control. This is how the target intake valve timing is verified by the ecm.
Monitor description
The ecm optimizes the intake valve timing using the vvt (variable valve timing) system to control the intake 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 regulates the oil pressure supplied to the vvt controller. The vvt controller can advance or retard the intake camshaft.
If the difference between the target and actual intake valve timings is large, and changes in the actual intake valve timing are small, the ecm interprets this as the vvt controller stuck malfunction and sets a dtc.
Example:
A dtc is set when the following conditions 1, 2 and 3 are met:
Dtc p0011 (advanced cam timing) is subject to 1 trip detection logic.
Dtc p0012 (retarded cam timing) is subject to 2 trip detection logic.
These dtcs indicate that the vvt controller cannot operate properly due to ocv malfunctions or the presence of foreign objects in the ocv.
The monitor will run if all of the following conditions are met:
Monitor strategy
Typical enabling conditions
Typical malfunction thresholds
Advanced camshaft timing:
Retard camshaft timing:
If the difference between the target and actual camshaft timings is greater than the specified value, the ecm operates the vvt actuator.
Then, the ecm monitors the camshaft timing change for 5 seconds.
Wiring diagram
Refer to dtc p0010 (see page es-64).
Inspection procedure
Notice:
Dtc p0011 or p0012 may be set when foreign objects in the engine oil are caught in some parts of the system. The dtc will remain set even if the system returns to normal after a short time.
Foreign objects are filtered out by the oil filter.
Hint:
If dtc p0011 or p0012 is present, check the vvt (variable valve timing) system.
Read freeze frame data using the intelligent tester. Freeze frame data records the engine condition when malfunctions are detected. When troubleshooting, freeze frame data can help determine if the vehicle was moving or stationary, 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.
Ok: no dtc output.
If not, turn the crankshaft 1 revolution (360°), then align the marks as above.
Ok:
Timing marks on camshaft timing gears are aligned as shown in the illustration.
Standard resistance: 6.9 To 7.9 ٠at 20°c (68°f)
Ok: valve moves quickly.
Ok: filter is not clogged.
Standard: no dtc output.
Hint:
Dtc p0011 or p0012 is output when foreign objects in engine oil are caught in some parts of the system. These codes will stay registered even if the system returns to normal after a short time. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem.
Rear seat inner belt assembly
Components
Removal
Remove rear seat leg cover
Remove rear no. 2 Seat leg side cover
Remove rear no. 3 Seat leg side cover (w/
rear no. 2 Seat) (see page se-81)
Remove rear no. 3 Seat leg side cover (w/o
rear no. 2 Seat) (see page se-81)
Remove rear no. 4 Seat leg side co ...
How to proceed with troubleshooting
Hint:
*: Use the intelligent tester.
Hint:
If the display indicates a communication fault in the tester,
inspect the dlc3.
Hint:
Record or print dtcs and freeze frame data, if necessary.
Hint:
If the engine does not start, first perform the "check dtc"
procedures a ...
Terminals of ecu
Check instrument panel junction block (main body ecu)
Measure the voltage of the connectors.
If the result is not as specified, the junction block
(main body ecu) may have a malfunction. ...