GSIC - Global Service Information Center

### 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)

## for Preparation Click here

## DESCRIPTION

Refer to DTC P0010 (Click here).

DTC No. | DTC Detection Condition | Trouble Area

P0011
P0021

Advanced cam timing:
After engine is warmed up, valve timing does not change from current valve timing while driving at engine speed of 400 to 4,000 rpm
(1 trip detection logic)

1. Valve timing
2. OCV (bank 1)
3. OCV filter (bank 1)
4. Camshaft timing gear assembly
5. ECM

P0012
P0022

Retarded cam timing:
After engine is warmed up, valve timing does not change from current valve timing while driving at engine speed of 400 to 4,000 rpm
(2 trip detection logic)

1. Valve timing
2. OCV (bank 2)
3. OCV filter (bank 2)
4. Camshaft timing gear assembly
5. ECM

## MONITOR DESCRIPTION

The ECM optimizes the valve timing using the VVT system to control the intake valve camshaft. The VVT system includes the ECM, OCV and VVT actuator. 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 timings is more than 5°of the crankshaft angle and the condition continues for more than 4.5 seconds; or 2) the OCV is forcibly activated 63 times or more.
DTC P0011 and P0021 (advanced cam timing) are subject to 1 trip detection logic.
DTC P0012 and P0022 (retarded cam timing) are subject to 2 trip detection logic.
The monitor runs if all the conditions below are met:

1. Warming up the engine (engine coolant temperature is 75°C (167°F) or more).
2. Driving the vehicle at more than 40 km/h (25 mph) for 3 minutes.
3. Idling the engine for 3 minutes.

## WIRING DIAGRAM

Refer to DTC P0010 (Click here).

## 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 circuit.

1. Bank 1 refers to the bank that includes the No. 1 cylinder.

1. If DTC P0021 or P0022 is displayed, check the left bank VVT system circuit.

1. Bank 2 refers to the bank that does not include the No. 1 cylinder.

1. Read freeze frame data using the intelligent tester. Freeze frame data records the engine conditions when a malfunction is detected. When troubleshooting, freeze frame data can help determine if the vehicle was running or stopped, 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.
2. If DTC P0011, P0012, P0021 or P0022 is present, check the Variable Valve Timing (VVT) system.

1.CHECK OTHER DTC OUTPUT (IN ADDITION TO DTC P0011, P0012, P0021 OR P0022)

1. Connect the intelligent tester to the DLC3.

1. Turn the ignition switch ON and turn the tester ON.

1. Enter the following menus: Powertrain / Engine and ECT / 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 (OPERATE OCV)

1. Start and warm up the engine.

1. Turn the ignition switch OFF.

1. Connect the intelligent tester to the DLC3.

1. Turn the ignition switch ON and turn the tester ON.

1. Enter the following menus: Powertrain / Engine and ECT / Active Test / Activate the VVT System (bank 1) or Control the VVT System (bank 2).

1. Using the tester, operate the OCV and check the engine speed.

OK:

  Tester Operation | Specified Condition
  OCV is OFF | Normal engine speed
  OCV is ON | Rough idle or engine stall

| 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 ignition switch ON and turn the tester ON.

1. Clear the DTC (Click here).

1. Start the engine and warm it up.

1. Change the ECM from normal mode to check mode using the tester (Click here).

1. Drive the vehicle for more than 10 minutes.

1. Read DTCs.

   OK:
     No DTC output.

| NG |

Go to step 4

OK |

END

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

1. Remove the cylinder head cover.

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°) and align the marks as described above.

   OK:
     Timing marks on camshaft timing gears are aligned as shown in the illustration.

| NG |

ADJUST VALVE TIMING

OK |

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

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

   Standard resistance:
     6.9 to 7.9 Ω at 20 °C (68°F)

1. Remove the OCV.

1. Apply the positive (+) battery voltage to terminal 2 and negative (-) battery voltage to terminal 1. Check the valve operation.

   OK:
     The valve moves quickly.

| NG |

REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

OK |

6.INSPECT OIL CONTROL VALVE FILTER

OK:
  Filter is not clogged.

| NG |

CLEAN OIL CONTROL VALVE FILTER

OK |

7.REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

After replacing the camshaft timing gear, confirm that the DTC output does not recur.

1. Connect the intelligent tester to the DLC3.

1. Turn the ignition switch ON and turn the tester ON.

1. Clear DTCs (Click here).

1. Start the engine and warm it up.

1. Change the ECM from normal mode to check mode using the tester (Click here).

1. Drive the vehicle for more than 10 minutes.

1. Confirm that no DTC is set using the tester.

NEXT |

END