Inspection Procedure

HINT:

DTC REFERENCE

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

If DTC P0011 or P0012 is displayed, check the bank 1 Variable Valve Timing (VVT) system circuit.
If DTC P0021 or P0022 is displayed, check the bank 2 VVT system circuit.
Bank 1 includes No. 1 cylinder, but bank 2 does not. No. 1 cylinder is located in the front part of the engine, opposite the transmission.
Read freeze frame data using the 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 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.

NOTE: DTC P0011, P0012, P0021 or P0022 is also output when a foreign object is detected in some parts of the system in the engine oil, and then the system returns to normal in a short time. As the ECM is controlled to eject a foreign object, there is no problem with the VVT. There is also no problem with the VVT as the oil filter should catch the foreign object in the engine oil.

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OCV OPERATION)

Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
Start the engine and warm it up.
Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT CTRL B1 or VVT CTRL B2.

Using the intelligent tester, operate the Oil Control Valve (OCV) and check the engine speed.

Standard

TESTER OPERATION AND SPECIFIED CONDITION

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

NG: Go to step 4

OK: Go to next step

PERFORM ACTIVE TEST BY INTELLIGENT TESTER (OCV OPERATION)
1. Enter the following menus: DIAGNOSIS / ENHANCED OBD II / ACTIVE TEST / VVT B1 or VVT B2.
2. Change the VVT B1 and VVT B2 values to a value between -100% to 100%.
  HINT:
  
  VVT B1 and VVT B2 values should be added to the current OCV duty ratio.
3. Confirm the current VVT angle by checking VVTL CHNG ANGL #1 and VVTL CHNG ANGL #2.
  OK:
  
  Operation of VVT B1 or VVT B2 leads to an immediate, linear change in the VVT angle.
  NOTE:
  - With the engine idling and with the advanced camshaft timing (VVT B1 or VVT B2 has a value of 0% to 100%), engine revolutions will be rough or the engine will stall.
  - When the vehicle is being driven, if the engine is turned off or the throttle valve is open, this ACTIVE TEST will automatically be canceled.
NG: Go to step 4

OK: Go to next step
CHECK IF DTC OUTPUT REOCCUR (DTC P0011, P0012, P0021 OR P0022)
1. Select check mode (see CHECK MODE PROCEDURE ).
2. Start and warm up the engine.
3. Drive the vehicle for 10 minutes or more.
4. Read the DTC.
  OK:
  
  No DTC is output.
OK: END

NG: Go to next step
CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TOOTH OF TIMING BELT)
1. Remove the engine cover (see REMOVAL ).
2. Remove the drive belt (see REMOVAL ).
3. Remove the timing belt cover LH and RH (see REMOVAL ).
4. Turn the crankshaft to align the matchmarks of the crankshaft.
5. Align the notch of the crankshaft pulley with the "0" position.
6. Confirm whether the matchmarks of the camshaft pulley and cylinder head cover are facing each other.
7. If the matchmarks are not facing each other, turn the crankshaft clockwise by 360°. Confirm again if the matchmarks are facing each other.
  OK:
  
  The matchmarks of the camshaft pulley and the cylinder head cover face each other when the notch of the crankshaft pulley is in the "0" position.
  
  Fig 1: Identifying Matchmarks Of Camshaft Pulley And Cylinder Head Cover
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: ADJUST VALVE TIMING

OK: Go to next step
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
1. Disconnect the C40 or C41 Oil Control Valve (OCV) connector.
2. Measure the resistance of the OCV.
  Standard resistance:
  
  6.9 to 7.9 Ω at 20°C (68°F)
3. Remove the OCV.
4. Apply battery voltage to the terminals of the OCV.
5. Check the valve operation.
  OK:
  
  The valve moves quickly.
  
  Fig 2: Inspecting Camshaft Timing Oil Control Valve Assembly
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

OK: Go to next step
INSPECT OIL CONTROL VALVE FILTER
1. Remove the cylinder head cover (see REMOVAL ).
2. Remove the camshaft bearing cap and OCV filter.
3. Check that the filter is not clogged.
  OK:
  
  The filter is not clogged.
NG: CLEAN OIL CONTROL VALVE FILTER

Fig 3: Identifying Oil Control Valve Filter
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

OK: Go to next step
REPLACE CAMSHAFT TIMING TUBE ASSEMBLY
1. After replacing camshaft timing tube assembly, confirm that the DTC output does not recur.
2. Connect the intelligent tester to the CAN VIM. Then connect the CAN VIM to the DLC3.
3. Turn the ignition switch ON and turn the tester ON.
4. Clear the DTCs (see DTC CHECK / CLEAR ).
5. Start and warm up the engine.
6. Switch the ECM from normal mode to check mode using the tester (see CHECK MODE PROCEDURE ).
7. Drive the vehicle for 10 minutes or more.
8. Confirm that no DTC is set using the tester.
NEXT: END