Diagnostic trouble code P0011 P0012 P0021 P0022 4GR-FSE Engine

Description

Wiring diagram

Inspection procedure

CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022)

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE OCV)

CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)

CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)

INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV)

INSPECT OIL CONTROL VALVE FILTER AND PIPE

REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

CHECK WHETHER DTC OUTPUT RECURS

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

DTC P0012 Camshaft Position "A" - Timing Over-Retarded (Bank 1)

DTC P0021 Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 2)

DTC P0022 Camshaft Position "A" - Timing Over-Retarded (Bank 2)

Description

The Variable Valve Timing (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 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 improves, 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.  

DTC No. DTC Detection Condition Trouble Area
P0011
P0021
Advanced cam timing:
With warm engine and engine speed of between 500 rpm and 4,000 rpm, all conditions (1), (2) and (3) met (1 trip detection logic):
1. Difference between target and actual intake valve timing more than 5°CA (Crankshaft Angle) for 4.5 seconds
2. Current intake valve timing fixed (timing changes less than 5°CA in 5 seconds)
3. Variations in VVT controller timing more than 19°CA of maximum delayed timing (advance)
  1. Valve timing
  2. Oil Control valve (OCV) for intake camshaft (bank 1)
  3. OCV filter (bank 1)
  4. Intake camshaft (bank 1) timing gear assembly
  5. ECM
P0012
P0022
Retarded cam timing:
With warm engine and engine speed of between 500 rpm and 4,000 rpm, all conditions (1), (2) and (3) met (2 trip detection logic):
1. Difference between target and actual intake valve timing more than 5°CA (Crankshaft Angle) for 4.5 seconds
2. Current intake valve timing fixed (timing changes less than 5°CA in 5 seconds)
3. Variations in VVT controller timing 19°CA or less of maximum delayed timing (retarded)
  1. Valve timing
  2. OCV for intake camshaft (bank 2)
  3. OCV filter (bank 2)
  4. Intake camshaft (bank 2) timing gear assembly
  5. ECM

Wiring diagram

Diagnostic trouble code P0011 P0012 P0021 P0022 4GR-FSE Engine. Wiring diagram

Inspection procedure

HINT:

Abnormal bank Advanced timing over
(Valve timing is out of specified range)
Retarded timing over
(Valve timing is out of specified range)
Bank 1 P0011 P0012
Bank 2 P0021 P0022
  1. If DTC P0011 or P0012 is displayed, check the right bank VVT system for intake camshaft circuit (bank 1).
  2. Bank 1 refers to the bank that include cylinder No. 1.
  3. If DTC P0021 or P0022 is displayed, check the left bank VVT system for intake camshaft circuit (bank 2).
  4. Bank 2 refers to the bank that does not include cylinder No. 1.
  5. Read freeze frame data using an intelligent tester. Freeze frame data records the engine conditions 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 .

 

1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022)
  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the tester ON.

  1. Enter the following menus: Power train / Engine / DTC.

  1.  

Read DTCs.

Result:

Display (DTC Output) Proceed to
P0011, P0012, P0021 or P0022 A
P0011, P0012, P0021 or P0022 and other DTCs B

HINT:

If any DTCs other than P0011, P0012, P0021 or P0022 are output, troubleshoot those DTCs first.

  B  
GO TO DTC CHART
 
A  
   

2.PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OPERATE OCV)
  1. Connect the intelligent tester to the DLC3.

  1. Start the engine and turn the tester ON.

  1. Warm up the engine.

  1. Enter the following menus: Power train / Engine / Active Test / Activate the VVT System (Bank 1) or Control the VVT System (Bank 2).

  1. Check the engine speed while operating the Oil Control Valve (OCV) using the tester.

    OK:

Tester Operation Specified Condition
OCV OFF Normal engine speed
OCV ON Engine idles roughly or stalls (soon after OCV switched from OFF to ON)
  NG  
Go to step 4
 
OK  
   

3.CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)
  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the tester ON.

  1. Clear DTCs.

  1. Start the engine and warm it up.

  1. Switch the ECM from normal mode to check mode using the tester.

  1. Drive the vehicle for more than 10 minutes.

  1. Read DTCs using the tester.

    OK:

    No DTC output.

  NG  
Go to step 4
 
OK  
   
END 

4.CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)

Diagnostic trouble code P0011 P0012 P0021 P0022 4GR-FSE Engine. Remove the cylinder head covers RH and LH.

  1. Remove the cylinder head covers RH and LH.

  1. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.

  1. Check that the timing marks of the camshaft timing gears are aligned with the timing marks of the bearing cap as shown in the illustration.
    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.

  1. Reinstall the cylinder head covers.

  NG  
ADJUST VALVE TIMING
 
OK  
   

5.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV)

Diagnostic trouble code P0011 P0012 P0021 P0022 4GR-FSE Engine. Remove the OCV.

  1. Remove the OCV.

  1. Measure the resistance between the terminals of the OCV.

    Standard resistance:

    6.9 to 7.9 ? at 20°C (68°F)

  1. Apply positive battery voltage to terminal 1 and negative battery voltage to terminal 2. Check the valve operation.

    OK:

    Valve moves quickly.

  1. Reinstall the OCV.

  NG  
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
 
OK  
   

6.INSPECT OIL CONTROL VALVE FILTER AND PIPE

Diagnostic trouble code P0011 P0012 P0021 P0022 4GR-FSE Engine. Remove the oil pipe No. 1 or No. 2.

  1. Remove the oil pipe No. 1 or No. 2.

  1. Remove the oil control valve filter.

  1. Check that the filter and pipe are not clogged.

    OK:

    The filter and pipe are not clogged.

  NG  
CLEAN OIL CONTROL VALVE FILTER AND PIPE
 
OK  
   

7.REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
NEXT  
   

8.CHECK WHETHER DTC OUTPUT RECURS
  1. Connect the intelligent tester to the DLC3.

  1. Turn the engine switch on (IG) and turn the tester ON.

  1. Clear DTCs.

  1. Start the engine and warm up.

  1. Switch the ECM from normal mode to the check mode using the tester.

  1. Driver the vehicle for more than 10 minutes.

  1. Read output DTCs using the intelligent tester.

    OK:

    No 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 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.

  OK  
SYSTEM IS OK
 
NG  
   
REPLACE ECM