Inspection Procedure

HINT:

• DTC P0011 or P0012 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.
• 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 be helpful in determining whether the vehicle was running or stopped, whether the engine was warmed up or not, whether the air fuel ratio was lean or rich, as well as other data recorded at the time of a malfunction.

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 and ECT / Trouble Codes.
   5. Read DTCs.

   Result 

   DTC RESULT REFERENCE
   
   

   Result	Proceed to
   P0011 or P0012	A
   P0011 or P0012 and other DTCs	B

   HINT:

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

   B: GO TO DTC CHART  (See DIAGNOSTIC TROUBLE CODE CHART )

   A: Go to next step 

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

   OK 

   TESTER SPECIFICATION
   
   

   Tester Operation	Specified Condition
   Camshaft timing oil control valve OFF	Normal engine speed
   Camshaft timing oil control valve ON	Engine idles roughly or stalls (soon after camshaft timing oil control valve 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. Start the engine and warm it up.
   6. Switch the ECM from normal mode to check mode using the Techstream (See CHECK MODE PROCEDURE ).
   7. Drive the vehicle for more than 10 minutes.
   8. Read DTCs.

   Result 

   DTC RESULT REFERENCE
   
   

   Result	Proceed to
   No output	A
   P0011 or P0012	B

   B: Go to step 4 

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

4. CHECK VALVE TIMING (CHECK FOR LOOSE OR JUMPED TEETH ON TIMING CHAIN) 
   1. Remove the cylinder head cover (See REMOVAL ).
   2. Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.
   3. Check that the alignment marks of the camshaft timing gears are aligned with the alignment 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: Alignment marks on camshaft timing gears are aligned as shown in the illustration. 

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

   NG: ADJUST VALVE TIMING 

   Fig 1: Identifying Alignment Marks On Camshaft Timing

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go to next step 

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

      Standard Resistance 

      RESISTANCE REFERENCE
      
      

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

   3. Apply positive battery voltage 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 (See INSPECTION ).
   Fig 2: Identifying Camshaft Timing Oil Control Valve Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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

   OK: Go to next step 

6. INSPECT OIL CONTROL VALVE FILTER 
   1. Remove the oil control valve filter (See DISASSEMBLY ).

      OK: Filter is not clogged. 

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

   NG: REPLACE OIL CONTROL VALVE FILTER 

   Fig 3: Identifying Oil Control Valve Filter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK: Go to next step 

7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY 
   1. Replace the camshaft timing gear assembly (See CAMSHAFT ).
8. CHECK WHETHER DTC OUTPUT RECURS 
   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. Start the engine and warm it up.
   6. Switch the ECM from normal mode to check mode using the Techstream (See CHECK MODE PROCEDURE ).
   7. Drive the vehicle for more than 10 minutes.
   8. Read DTCs.

   Result 

   DTC RESULT REFERENCE
   
   

   Result	Proceed to
   No output	A
   P0011 or P0012	B

   HINT:

   DTC P0011 or P0012 is output when foreign objects in engine oil are caught in some parts of the system. These codes will remain set for a short time even after the system returns to normal. These foreign objects may then be captured by the oil filter, thus eliminating the source of the problem.

   B: REPLACE ECM  (See ECM )

   A: END