Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota RAV4. However, it is still accessible from the selected car via links, so may be relevant.

HINT:

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.

HINT:

INSPECTION PROCEDURE

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	P0021
Bank 2	P0012	P0022

If DTC P0011 or P0012 is displayed, check the right bank VVT system for intake camshaft circuit (bank 1).
Bank 1 refers to the bank that includes No. 1 cylinder.
If DTC P0021 or P0022 is displayed, check the left bank VVT system for intake camshaft circuit (bank 2).
Bank 2 refers to the bank that does not include No. 1 cylinder.
Read freeze frame data using Techstream. Freeze frame data records the engine condition 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.

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

Connect Techstream to the DLC3.
Turn the ignition switch ON and turn the tester ON.
Select the following menu items: Powertrain / Engine and ECT / Trouble Code.

Read DTCs.

Result

RESULT CHART

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: Go to next step

PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV)

Connect Techstream to the DLC3.
Start the engine and turn the tester ON.
Warm up the engine.
On the tester, select the following menu items: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2).

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

TESTER OPERATION SPECIFIED CONDITION CHART

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: Go to next step

CHECK WHETHER DTC OUTPUT RECURS (DTC P0011, P0012, P0021 OR P0022)
1. Connect Techstream to the DLC3.
2. Turn the ignition switch ON and turn the tester ON.
3. Clear DTCs (see DTC CHECK / CLEAR ).
4. Start the engine and warm it up.
5. Switch the ECM from normal mode to check mode using the tester.
6. Drive the vehicle for more than 10 minutes.
7. Read DTCs using the tester.
  OK:
  
  No DTC output.
NG: Go to step 4

OK: END
CHECK VALVE TIMING (CHECK FOR LOOSE AND JUMPED TEETH ON TIMING CHAIN)
1. Remove the cylinder head cover.
2. Turn the crankshaft pulley, and align its groove with the timing mark "0" on the timing chain cover.
3. Check that the timing marks on the camshaft timing sprocket and camshaft timing gear are facing upward 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.
  
  Fig 1: Identifying Timing Marks
  Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
4. Reinstall the cylinder head cover.
NG: ADJUST VALVE TIMING

OK: Go to next step
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (OCV)
1. Remove the OCV.
2. Measure the resistance between the terminals of the OCV.
  Standard resistance:
  
  6.9 to 7.9 Ω at 20°C (68°F)
3. Apply the positive battery voltage to terminal 1 and negative battery voltage to terminal 2. Check the valve operation.
  OK:
  
  Valve moves quickly.
4. Reinstall the OCV.
NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY

OK: Go to next step
INSPECT OIL CONTROL VALVE FILTER AND PIPE
1. Remove the oil pipe No. 1 or No. 2.
2. Remove the OCV filter.
3. Check that the filter is not clogged.
  OK:
  
  Filter is not clogged.
4. Reinstall the OCV filter.
5. Reinstall the oil pipe No. 1 or No. 2.
NG: CLEAN OIL CONTROL VALVE FILTER AND PIPE

OK: Go to next step
REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
CHECK WHETHER DTC OUTPUT RECURS
1. Connect Techstream to the DLC3.
2. Turn the ignition switch ON and turn the tester ON.
3. Clear DTCs (see DTC CHECK / CLEAR ).
4. Start the engine and warm it up.
5. Switch the ECM from normal mode to check mode using the tester.
6. Drive the vehicle for more than 10 minutes.
7. Read output DTCs using the tester.
  Standard:
  
  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 OK

NG: REPLACE ECM