P0011
2GR-FE ENGINE CONTROL: SFI SYSTEM: P0011,P0012,P0021,P0022: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1)
DESCRIPTION
Refer to DTC P0010 P0010.
MONITOR DESCRIPTION
1. 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.
2. 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 timing 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 "A" and "B" are met:
1. It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
2. After the above condition is met, the camshaft timing oil control valve assembly is forcibly activated 10 seconds (Condition "B").
3. DTCs P0011 and P0021 (advanced camshaft timing) are subject to 1 trip detection logic.
4. DTCs P0012 and P0022 (retarded camshaft timing) are subject to 2 trip detection logic.
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.
5. The monitor will run if all of the following conditions are met:
a. The engine is warm (the engine coolant temperature is 75°C [167°F] or more).
b. The vehicle has been driven at more than 40 mph (64 km/h) for 3 minutes.
c. The engine has idled for 3 minutes.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
Advances Camshaft Timing
Advances Camshaft Timing:
Retard Camshaft Timing
Retard Camshaft Timing:
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the Clear DTC procedure) DTC Check / Clear.
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or more [B].
7. Drive the vehicle for 5 minutes or more [C].
8. Idle the engine for 30 seconds or more [D].
9. Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
10. Read the pending DTCs [E].
11. If a pending DTC is output, the system is malfunctioning.
HINT
If a pending DTC is not output, perform the following procedure.
12. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
13. Input the DTC: P0011, P0012, P0021 or P0022.
14. Check the DTC judgment result.
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
- If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [F] through [H].
15. Drive the vehicle for 5 minutes or more [F].
16. Idle the engine for 30 seconds or more [G].
17. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
18. Input the DTC: P0011, P0012, P0021 or P0022.
19. Check the DTC judgment result again [H].
HINT
- If the judgment result shows ABNORMAL, the system has a malfunction.
- If the judgment result shows NORMAL, the system is normal.
20. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.
HINT
- If a permanent DTC is output, the system is malfunctioning.
- If no permanent DTC is output, the system is normal.
- 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 P0010.
INSPECTION PROCEDURE
HINT
- If DTC P0011 or P0012 is displayed, check the intake camshaft circuit for the right bank VVT system (bank 1).
- Bank 1 refers to the bank that includes cylinder No. 1.
- If DTC P0021 or P0022 is displayed, check the intake camshaft circuit for the left bank VVT system (bank 2).
- Bank 2 refers to the bank that does not include cylinder No. 1.
- DTC P0011, P0012, P0021 or P0022 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.
- Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. When troubleshooting, freeze frame data can be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.
PROCEDURE
1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs.
Result:
HINT
If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first.
B -- GO TO DTC CHART Engine Control System - SFI System
A -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT SYSTEM (BANK 1 OR 2))
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Turn the Techstream on.
(d) Warm up the engine.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2).
(f) Check the engine speed while operating the camshaft timing oil control valve assembly using the Techstream.
OK:
NG -- CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN)
OK -- Continue to next step.
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTC DTC Check / Clear.
(e) Start the engine and warm it up.
(f) Drive the vehicle in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN.
(g) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
(h) Read the pending DTCs using the Techstream.
OK:
No pending DTC output.
NG -- CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN)
OK -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems
4. CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN)
(a) Remove the cylinder head cover sub-assemblies RH and LH.
(b) Turn the crankshaft to align the timing marks of the crankshaft.
(c) Align the notch of the crankshaft pulley to the "0" position.
(d) Check if the timing marks of the camshaft pulley and camshaft bearing cap align.
Text in Illustration
Text in Illustration:
(e) Turn the crankshaft clockwise 360° if the timing marks do not align. Check if they align once again.
OK:
The timing marks of the camshaft pulley and the camshaft bearing cap align when the notch of the crankshaft pulley is in the "0" position.
(f) Reinstall the cylinder head cover sub-assemblies RH and LH.
NG -- ADJUST VALVE TIMING Reassembly
OK -- Continue to next step.
5. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT)
(a) Remove the camshaft timing oil control valve assembly for intake camshaft.
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
Text in Illustration:
(c) Connect the positive (+) battery terminal to terminal 1 and connect the negative (-) battery terminal to terminal 2. Check the valve operation.
OK:
Valve moves quickly.
Text in Illustration
Text in Illustration:
(d) Reinstall the camshaft timing oil control valve assembly for intake camshaft.
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE CAMSHAFT) Removal
OK -- Continue to next step.
6. INSPECT OIL CONTROL VALVE FILTER AND OIL PIPE
(a) Remove the No. 1 oil pipe or No. 2 oil pipe.
(b) Remove the oil control valve filter RH or oil control valve filter LH.
(c) Check that the oil control valve filter and oil pipe are not clogged.
OK:
The oil control valve filter and oil pipe are not clogged.
Text in Illustration
Text in Illustration:
(d) Reinstall the oil control valve filter RH or oil control valve filter LH.
(e) Reinstall the No. 1 oil pipe or No. 2 oil pipe.
NG -- REPLACE OIL CONTROL VALVE FILTER OR OIL PIPE Disassembly
OK -- Continue to next step.
7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
(a) Replace the camshaft timing gear assembly (bank 1 or bank 2) Removal.
NEXT -- Continue to next step.
8. CHECK WHETHER DTC OUTPUT RECURS
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTC DTC Check / Clear.
(e) Start the engine and warm it up.
(f) Drive the vehicle in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN.
(g) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
(h) Read the pending DTCs using the Techstream.
OK:
No pending DTC output.
HINT
DTC P0011, P0012, P0021 or P0022 is output when foreign objects in engine oil are caught in some parts of the system. These codes 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, thus eliminating the source of the problem.
NG -- REPLACE ECM Removal
OK -- END