DTC P0014: Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1); DTC P0015: Camshaft Position "B" - Timing Over-Retarded (Bank 1): Procedure

CHECK FOR ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014 OR P0015)

Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine / Trouble Codes.

Read the DTCs.

RESULT

Result	Proceed to
P0014 or P0015 is output	A
P0014 or P0015 and other DTCs are output	B

HINT:

If any DTCs other than P0014 or P0015 are output, troubleshoot those DTCs first.

B → See step 9

A: Go to next step

PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE)

Connect the Techstream to the DLC3.
Start the engine.
Turn the Techstream on.
Warm up the engine.
Turn the A/C on.
Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank1).

Check the engine speed while operating the camshaft timing oil control valve using the Techstream.

Techstream Operation	Specified Condition
0%	Normal engine speed
100%	Engine idles roughly or stalls

HINT:

Refer to "Data List / Active Test" [VVT Ex OCV Duty #1 and VVT Ex Chg Angle #1]. Refer to DATA LIST / ACTIVE TEST .

NG → See step 4

OK: Go to next step

CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON.
3. Turn the Techstream on.
4. Clear the DTCs. Refer to DTC CHECK / CLEAR .
5. Warm up the engine.
6. Drive the vehicle in accordance with the driving pattern described in Confirmation Driving Pattern.
7. Read the output pending DTCs using the Techstream.
  OK
  
  No pending DTC output.
NG → See step 4

OK → See step 10
CHECK VALVE TIMING (CHECK FOR LOOSENESS IN TIMING CHAIN AND WHETHER TIMING CHAIN HAS JUMPED TOOTH)

Fig 1: Identifying Timing Marks
Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
TEXT IN ILLUSTRATION

*1 Timing Mark - -
1. Remove the cylinder head cover.
2. Turn the crankshaft pulley and align its groove with the "0" timing mark of the timing chain cover.
3. Check that the timing marks of the camshaft timing gear and camshaft timing exhaust gear are at the positions shown in the illustration.
  HINT:
  
  If the timing marks are not as shown, turn the crankshaft one revolution clockwise.
  
  OK
  
  Timing marks on camshaft timing gear and camshaft timing exhaust gear are aligned as shown in the illustration.
NG → See step 11

OK: Go to next step
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)
1. Inspect the camshaft timing oil control valve assembly. Refer to INSPECTION .
NG → See step 12

OK: Go to next step
INSPECT OIL CONTROL VALVE FILTER
1. Remove the oil control valve filter. Refer to DISASSEMBLY .
2. Check that the filter is not clogged.
  OK
  
  Filter is not clogged.
NG → CLEAN OR REPLACE OIL CONTROL VALVE FILTER

OK: Go to next step
REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY
1. Replace the camshaft timing exhaust gear assembly. Refer to REMOVAL .
NEXT: Go to next step
CHECK WHETHER DTC OUTPUT RECURS
1. Perform the Confirmation Driving Pattern.
  OK
  
  No pending DTC is output and All Readiness is NORMAL.
  
  HINT:
  
  DTC P0014 or P0015 is stored when foreign objects in the engine oil are caught in some parts of the system. These codes will remain stored 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.
NG → See step 13

OK → END
GO TO DTC CHART. Refer to DIAGNOSTIC TROUBLE CODE CHART
CHECK FOR INTERMITTENT PROBLEMS. Refer to CHECK FOR INTERMITTENT PROBLEMS
ADJUST VALVE TIMING. Refer to REASSEMBLY
REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY. Refer to REMOVAL
REPLACE ECM. Refer to REMOVAL