DTC P0011: Camshaft Position "A" - Timing Over-Advanced or System Performance (Bank 1); DTC P0012: Camshaft Position "A" - Timing Over-Retarded (Bank 1): Procedure

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream ON.
4. Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.
5. Read DTCs.
   RESULT
   
   

   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 → See step   8 

A: Go to next step 

1. Connect the Techstream to the DLC3.
2. Start the engine.
3. Turn the Techstream ON.
4. Warm up the engine.
5. Select the following menu items: 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 (OCV) using the Techstream.

   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 the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream ON.
4. Clear DTCs . Refer to DTC CHECK / CLEAR .
5. Start the engine and warm it up.
6. Refer to the confirmation driving pattern for P0011, and P0012.
7. Select the following menu items: Powertrain / Engine and ECT / Trouble Code / Pending.
8. Read Pending DTCs.
   RESULT
   
   

   Result	Proceed to
   No output	A
   P0011 or P0012	B

B → See step   4 

A → CHECK FOR INTERMITTENT PROBLEMS 

1. Remove the cylinder head cover . Refer to ADJUSTMENT .
   Fig 1: Identifying Alignment Marks Of Camshaft Timing Gears

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Turn the crankshaft pulley, and align its groove with the alignment 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 . Refer to ADJUSTMENT .

NG → ADJUST VALVE TIMING 

OK: Go to next step 

1. Remove the camshaft timing oil control valve assembly . Refer to REMOVAL .
   Fig 2: Inspecting Camshaft Timing Oil Control Valve Assembly

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
2. Measure the resistance according to the value(s) in the table below.

   Standard resistance

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

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 camshaft timing oil control valve assembly . Refer to INSTALLATION .

NG → See step   9 

OK: Go to next step 

1. Remove the oil control valve filter . Refer to DISASSEMBLY - Step 40 .
   Fig 3: Inspecting Oil Control Valve Filter

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   OK

   Filter is not clogged.

2. Remove the oil control valve filter . Refer to REASSEMBLY - Step 7 .

NG → CLEAN OIL CONTROL VALVE FILTER 

OK: Go to next step 

1. Replace the camshaft timing gear assembly . Refer to REMOVAL .

NEXT: Go to next step 

1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream ON.
4. Clear DTCs . Refer to DTC CHECK / CLEAR .
5. Start the engine and warm it up.
6. Refer to the confirmation driving pattern for P0011, and P0012.
7. Select the following menu items: Powertrain / Engine and ECT / Trouble Code / Pending.
8. Read Pending DTCs.
   RESULT
   
   

   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 stay output for a short time even after the system returns to normal. These foreign objects are then captured by the oil filter, thus eliminating the source of the problem.

B → See step   11 

A → END