Inspection Procedure

HINT:

• DTC P0011 or P0012 may be stored 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. Those foreign objects may then be captured by the oil filter.
• Read freeze frame data using the Techstream. The ECM records vehicle and driving condition information as freeze frame data the moment a DTC is stored. 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 OR P0012) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the Techstream on.
   4. Enter the following menus: Powertrain/Engine/Trouble Codes.
   5. Read the DTCs.

      Result 

      RESULT CHART
      
      

      Result	Proceed to
      DTC P0011 or P0012 is output	A
      DTC P0011 or P0012 and other DTCs are output	B

      HINT:

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

      B:  GO TO DTC CHART

      A: Go to next step 

2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY) 
   1. Connect the Techstream to the DLC3.
   2. Start the engine.
   3. Turn the Techstream on.
   4. Turn the A/C switch on.
   5. Enter the following menus: Powertrain/Engine/Active Test/Control the VVT System (Bank 1).
   6. Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream.

      Result 

      TECHSTREAM OPERATION CHART
      
      

      Techstream Operation	Specified Condition
      OFF	Normal engine speed
      ON	Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON)

      HINT:

      If the result is not acceptable, cool the engine and perform the Active Test again.

   7. Start the engine when the engine coolant temperature is 30°C (86°F) or less.
   8. Turn the Techstream on.
   9. Turn the A/C switch on.
   10. Enter the following menus: Powertrain/Engine/Active Test/Control the VVT System (Bank 1).
   11. Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream when the engine coolant temperature is 50°C (122°F) or less.

       Result 

       TECHSTREAM OPERATION CHART
       
       

       Techstream Operation	Specified Condition
       OFF	Normal engine speed
       ON	Engine idles roughly or stalls (soon after camshaft timing oil control valve assembly switched from OFF to ON)

       NG: Go to step  4

       OK: Go to next step 

3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the Techstream on.
   4. Clear the DTCs (See DTC CHECK/CLEAR ).
   5. Turn the ignition switch off.
   6. Turn the ignition switch to ON and turn the Techstream on.
   7. Start the engine and warm it up.
   8. Drive the vehicle in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN .
   9. Enter the following menus: Powertrain/Engine/Utility/All Readiness.
   10. Input the DTC: P0011 or P0012.
   11. Check the DTC judgment result.

       Result 

       RESULT CHART
       
       

       Result	Proceed to
       NORMAL (DTC is not output)	A
       ABNORMAL (DTC P0011 or P0012 is output)	B

       HINT:

       DTC P0011 or P0012 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.

       B: Go to step 4 

       A: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS )

4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY 
   1. Remove the camshaft timing oil control valve assembly (for intake camshaft).
   2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance 

      TESTER CONNECTION SPECIFIED CONDITION CHART
      
      

      Tester Connection	Condition	Specified Condition
      1 - 2	20°C (68°F)	6.9 to 7.9 Ω

      Fig 1: Inspecting Camshaft Timing Oil Control Valve Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
   3. Connect the positive (+) battery terminal to terminal 1 and connect the negative (-) battery terminal to terminal 2. Check the valve operation.

      OK: 

      Valve moves quickly. 

   4. Reinstall the camshaft timing oil control valve assembly (for intake camshaft).

      NG: REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY  (See REMOVAL )

      Fig 2: Connecting Battery Terminals To Camshaft Timing Oil Control Valve Assembly

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) 
   1. Remove the cylinder head cover (See REMOVAL ).
      Fig 3: Identifying Timing Marks

      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 as shown in the illustration.

      OK: 

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

   4. Reinstall the cylinder head cover (See INSTALLATION ).

      NG: ADJUST VALVE TIMING  (See REMOVAL )

      OK: Go to next step 

6. INSPECT CAMSHAFT TIMING GEAR ASSEMBLY 
   1. Inspect the camshaft timing gear assembly (See INSPECTION ).

      NG: REPLACE CAMSHAFT TIMING GEAR ASSEMBLY  (See DISASSEMBLY )

      OK: Go to next step 

7. INSPECT OIL CONTROL VALVE FILTER 
   1. Remove the oil control valve filter (See DISASSEMBLY ).
   2. Check that the filter is not clogged.

      OK: 

      Filter is not clogged. 

   3. Reinstall the oil control valve filter (See REASSEMBLY ).

      NG: REPLACE OIL CONTROL VALVE FILTER  (See DISASSEMBLY )

      Fig 4: Identifying Oil Control Valve Filter

      Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

      OK: Go to next step 

8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0011 OR P0012) 
   1. Connect the Techstream to the DLC3.
   2. Turn the ignition switch to ON.
   3. Turn the Techstream on.
   4. Clear the DTCs (See DTC CHECK/CLEAR ).
   5. Turn the ignition switch off.
   6. Turn the ignition switch to ON and turn the Techstream on.
   7. Start the engine and warm it up.
   8. Drive the vehicle in accordance with the driving pattern described in the CONFIRMATION DRIVING PATTERN .
   9. Enter the following menus: Powertrain/Engine/Utility/All Readiness.
   10. Input the DTC: P0011 or P0012.
   11. Check the DTC judgment result.

       Result 

       RESULT CHART
       
       

       Result	Proceed to
       NORMAL (DTC is not output)	A
       ABNORMAL (DTC P0011 or P0012 is output)	B

       HINT:

       DTC P0011 or P0012 may be stored when foreign objects in the engine oil are caught in some parts of the system. The DTC will remain stored even if the system returns to normal after a short time. These foreign objects may then be captured by the oil filter.

       B: REPLACE ECM  (See REMOVAL )

       A: CHECK FOR INTERMITTENT PROBLEMS  (See CHECK FOR INTERMITTENT PROBLEMS )