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): Procedure

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the tester on.
3. Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
4. 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: Go to next step 

1. Connect Techstream to the DLC3.
2. Start the engine and turn the tester on.
3. Warm up the engine.
4. Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1) or Control the VVT System (Bank 2).
5. 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 → See step   4 

OK: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the tester on.
3. Clear DTCs.
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 → See step   4 

OK → END 

1. Remove the cylinder head covers RH and LH.
   Fig 1: Checking Timing Marks Of Camshaft Timing Gears

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.
3. 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.

4. Reinstall the cylinder head covers.

NG → ADJUST VALVE TIMING 

OK: Go to next step 

1. Remove the OCV.
   Fig 2: Measuring Resistance Between Terminals Of OCV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
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 positive battery voltage to terminal 1 and negative battery voltage to terminal 2. Check the valve operation.
   Fig 3: Checking Operation Of OCV

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   Valve moves quickly.

4. Reinstall the OCV.

NG → REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 

OK: Go to next step 

1. Remove the oil pipe No. 1 or No. 2.
   Fig 4: Locating Oil Control Valve Filter And Pipe

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Remove the oil control valve filter.
3. 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: Go to next step 

NEXT: Go to next step 

1. Connect Techstream to the DLC3.
2. Turn the engine switch on (IG) and turn the tester on.
3. Clear DTCs.
4. Start the engine and warm up.
5. Switch the ECM from normal mode to the check mode using the tester.
6. Driver the vehicle for more than 10 minutes.
7. Read output DTCs using Techstream.

   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