SFI SYSTEM, Diagnostic DTC:P000A, P000C, P0011, P0021

DTC Code	DTC Name
P000A	Camshaft Position "A" - Timing Slow Response Bank 1
P000C	Camshaft Position "A" - Timing Slow Response Bank 2
P0011	Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)
P0021	Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2)

DESCRIPTION

The Variable Valve Timing (VVT) system adjusts the intake valve timing to improve driveability. The engine oil pressure turns the VVT controller to adjust the valve timing.

The camshaft timing oil control valve assembly is a solenoid valve and switches the engine oil line. The valve moves when the ECM applies 12 V to the solenoid. The ECM changes the energizing time to the solenoid (duty-cycle) in accordance with the camshaft position, crankshaft position, throttle position, etc.

DTC No.	DTC Detection Condition	Trouble Area
P000A	Integrated deviations in target intake valve timing and actual intake valve timing per specified time exceed thresholds (bank 1). (2 trip detection logic)	Valve timing Camshaft timing oil control valve assembly (for intake side of bank 1) Oil control valve filter Camshaft timing gear assembly (for intake side of bank 1) ECM
P0011	Deviation in target intake valve timing and actual intake valve timing exceeds thresholds (bank 1). (2 trip detection logic)
P000C	Integrated deviations in target intake valve timing and actual intake valve timing per specified time exceed thresholds (bank 2). (2 trip detection logic)	Valve timing Camshaft timing oil control valve assembly (for intake side of bank 2) Oil control valve filter Camshaft timing gear assembly (for intake side of bank 2) ECM
P0021	Deviation in target intake valve timing and actual intake valve timing exceeds thresholds (bank 2). (2 trip detection logic)

MONITOR DESCRIPTION

The ECM optimizes the intake valve timing using the Variable Valve Timing (VVT) system to control the intake camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly and the VVT controller (camshaft timing gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly. 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 stores a DTC.
These DTCs indicate that the VVT controller cannot operate properly due to camshaft timing oil control valve assembly malfunctions or the presence of foreign objects in the camshaft timing oil control valve assembly.

CONFIRMATION DRIVING PATTERN

Connect the GTS to the DLC3.
Turn the ignition switch to ON and turn the GTS on.
Clear DTCs (even if no DTCs are stored, perform the clear DTC operation) Click here.
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON and turn the GTS on.
Start the engine and warm it up until the engine oil temperature reaches 75°C (167°F) or higher.
Perform the following the confirmation driving pattern.

CAUTION:

When performing the confirmation driving pattern, obey all speed limits and traffic laws.

Idle the engine for 10 seconds or more [A].
Accelerate the vehicle to 97 km/h (60 mph) or more within 20 seconds [B].
Drive the vehicle at 97 km/h (60 mph) or more for 20 seconds or more [C].
Release the accelerator pedal to Decelerate until the vehicle speed decreases to less than 64 km/h (40 mph) [D].

Tech Tips

Release the accelerator pedal fully to perform the fuel-cut.
Drive the vehicle at 60 km/h (40 mph) or less for 20 seconds or more [E].
Accelerate the vehicle to 97 km/h (60 mph) or more within 10 seconds [F].
Release the accelerator pedal and stop the vehicle [G].

Enter the following menus: Powertrain / Engine / Trouble Codes.
Read pending DTCs.
Tech Tips
- If a pending DTC is output, the system is malfunctioning.
- If a pending DTC is not output, perform the following procedure.
Enter the following menus: Powertrain / Engine / Utility / All Readiness.
Input the DTC: P000A, P000C, P0011 or P0021.

Check the DTC judgment result.

GTS Display	Description
NORMAL	DTC judgment completed System normal
ABNORMAL	DTC judgment completed System abnormal
INCOMPLETE	DTC judgment not completed Perform driving pattern after confirming DTC enabling conditions
N/A	Unable to perform DTC judgment Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit

Tech Tips

If the judgment result shows NORMAL, the system is normal.
If the judgment result shows ABNORMAL, the system has a malfunction.

If the test result is INCOMPLETE or N/A and no DTC is output, perform a universal trip and check for permanent DTCs Click here.
Tech Tips
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

Refer to DTC P0010 Click here.

CAUTION / NOTICE / HINT

Tech Tips

If DTC P000A or P0011 is displayed, check the intake camshaft circuit for the right bank VVT system (bank 1).
If DTC P000C or P0021 is displayed, check the intake camshaft circuit for the left bank VVT system (bank 2).
Bank 1 refers to the bank that includes the No. 1 cylinder*.

*: The No. 1 cylinder is the cylinder which is farthest from transmission.
Bank 2 refers to the bank that does not include the No. 1 cylinder.
Read freeze frame data using the GTS. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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.

PROCEDURE

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P000A, P000C, P0011 OR P0021)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read DTCs.

Result
Result	Proceed to
DTC P000A, P000C, P0011 or P0021 is output	A
DTC P000A, P000C, P0011 or P0021 and other DTCs are output	B

Tech Tips

If any DTCs other than DTC P000A, P000C, P0011 or P0021 are output, troubleshoot those DTCs first.

GO TO DTC CHART Click here

PERFORM ACTIVE TEST USING GTS (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY)

Connect the GTS to the DLC3.
Start the engine.
Turn the GTS on.
Turn the A/C switch on.
Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank 1), Control the VVT Linear (Bank 2).

Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the GTS.

GTS Operation	Specified Condition
0 deg (CA)	Normal engine speed
36 deg (CA)	Engine idles roughly or stalls

Tech Tips

Refer to "Data List / Active Test" [VVT OCV Duty #1, VVT OCV Duty #2 and VVT Change Angle #1, VVT Change Angle #2] Click here.

CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) Click here

CHECK WHETHER DTC OUTPUT RECURS (DTC P000A, P000C, P0011 OR P0021)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs Click here.
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

Read pending DTCs.

Result
Result	Proceed to
DTC is not output	A
DTC P000A, P000C, P0011 or P0021 is output	B

Tech Tips

DTC P000A, P000C, P0011 or P0021 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.

CHECK FOR INTERMITTENT PROBLEMS Click here

CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)
1. Check the valve timing Click here.
NG
ADJUST VALVE TIMING Click here

OK
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT)
1. Inspect the camshaft timing oil control valve assembly (for intake camshaft) Click here.
NG
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Click here

OK
INSPECT CAMSHAFT TIMING GEAR ASSEMBLY
1. Inspect the camshaft timing gear assembly Click here.
  Tech Tips
  - DTC P000A, P000C, P0011 or P0021 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.
NG
REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (FOR INTAKE CAMSHAFT) Click here

OK
CLEAN LUBRICATION SYSTEM
1. Replace the engine oil Click here.
2. Warm up the engine for 5 minutes, and then stop the engine.
3. Replace the engine oil and filter Click here.
NEXT

CHECK WHETHER DTC OUTPUT RECURS (DTC P000A, P000C, P0011 OR P0021)

Connect the GTS to the DLC3.
Turn the ignition switch to ON.
Turn the GTS on.
Clear the DTCs Click here.
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the GTS on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

Read pending DTCs.

Result
Result	Proceed to
DTC is not output	A
DTC P000A, P000C, P0011 or P0021 is output	B

Tech Tips

END

REPLACE ECM Click here