P0014
2AR-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0014,P0015: Camshaft Position "B" - Timing Over-Advanced or System Performance (Bank 1)
DESCRIPTION
Refer to DTC P0013 P0013.
MONITOR DESCRIPTION
The ECM optimizes the exhaust valve timing using the Variable Valve Timing (VVT) system to control the exhaust camshaft. The VVT system includes the ECM, the camshaft timing oil control valve assembly and the VVT controller (camshaft timing gear assembly). The ECM sends a target duty-cycle control signal to the camshaft timing oil control valve assembly. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the exhaust camshaft.
If the difference between the target and actual exhaust valve timing is large, and changes in the actual exhaust valve timing are small, the ECM interprets this as a VVT controller stuck malfunction and stores a DTC.
- Example:
- A DTC is set when the following conditions "A" and "B" are met:
a. It takes 5 seconds or more to change the valve timing by 5°CA (Condition "A").
b. After the above condition is met, the camshaft timing oil control valve assembly is forcibly activated 10 seconds (Condition "B").
- DTC P0014 (Advanced Cam Timing) is subject to 2 trip detection logic.
- DTC P0015 (Retarded Cam Timing) is subject to 1 trip detection logic.
- These DTCs indicate that the VVT controller cannot operate properly due to camshaft timing oil control valve assembly malfunctions or the presence of foreign objects in the camshaft timing oil control valve assembly.
- The monitor will run if all of the following conditions are met:
- The engine is warm (the engine coolant temperature is 75°C [167°F] or more).
- The vehicle has been driven at more than 40 mph (64 km/h) for 3 minutes.
- The engine has idled for 3 minutes.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
Advanced Camshaft Timing
Retarded Camshaft Timing
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear the DTCs (even if no DTCs are stored, perform the clear DTC procedure) Reading and Clearing Diagnostic Trouble Codes.
4. Turn the ignition switch off and wait for at least 30 seconds.
5. Turn the ignition switch to ON and turn the Techstream on [A].
6. Start the engine and warm it up until the engine coolant temperature reaches 75°C (167°F) or higher [B].
7. Drive the vehicle for 5 minutes or more [C].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
8. Idle the engine for 30 seconds or more [D].
9. Enter the following menus: Powertrain / Engine / Utility / All Readiness.
10. Input the DTC: P0014 or P0015.
11. Check the DTC judgment result [E].
HINT
* If the judgment result shows ABNORMAL, the system has a malfunction.
* If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [F] through [H].
12. Drive the vehicle for 5 minutes or more [F].
CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.
13. Idle the engine for 30 seconds or more [G].
14. Check the DTC judgment result again [H].
15. If the test result is UNKNOWN, enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
16. Read Pending DTCs [H].
HINT
If a pending DTC is output, the system is malfunctioning.
17. If the test result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs Reading and Clearing Diagnostic Trouble Codes.
HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.
MONITOR RESULT
Refer to Checking Monitor Status Mode 6 Data.
WIRING DIAGRAM
Refer to DTC P0013 P0013.
INSPECTION PROCEDURE
HINT
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.
PROCEDURE
1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0014 OR P0015)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Enter the following menus: Powertrain / Engine / Trouble Codes.
(e) Read the DTCs.
Result:
HINT
If any DTCs other than P0014 or P0015 are output, troubleshoot those DTCs first.
B -- GO TO DTC CHART SFI System
A -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY)
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Turn the Techstream on.
(d) Turn the A/C switch on.
(e) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1).
(f) Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream.
Result:
HINT
If the result is not acceptable, cool the engine and perform the Active Test again.
(g) Start the engine when the engine coolant temperature is 30°C (86°F) or less.
(h) Turn the Techstream on.
(i) Turn the A/C switch on.
(j) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1).
(k) Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream when the engine coolant temperature is 50°C (122°F) or less.
Result:
NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)
OK -- Continue to next step.
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Start the engine and warm it up.
(f) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(g) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
(h) Read the pending DTCs.
Result:
B -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)
A -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems
4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT)
(a) Remove the camshaft timing oil control valve assembly (for exhaust camshaft).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
(c) 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.
(d) Reinstall the camshaft timing oil control valve assembly (for exhaust camshaft).
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR EXHAUST CAMSHAFT) Removal
OK -- Continue to next step.
5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH)
(a) Remove the timing chain cover sub-assembly Removal.
(b) Turn the crankshaft pulley, and align its groove with the timing mark "0" of the timing chain cover.
(c) 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.
(d) Reinstall the timing chain cover sub-assembly Installation.
NG -- ADJUST VALVE TIMING Removal
OK -- Continue to next step.
6. INSPECT OIL CONTROL VALVE FILTER
(a) Remove the oil control valve filter Disassembly.
(b) Check that the filter is not clogged.
OK:
Filter is not clogged.
(c) Reinstall the oil control valve filter Reassembly.
NG -- REPLACE OIL CONTROL VALVE FILTER Disassembly
OK -- Continue to next step.
7. REPLACE CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY (FOR EXHAUST CAMSHAFT)
(a) Replace the camshaft timing exhaust gear assembly Removal.
NEXT -- Continue to next step.
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0014 OR P0015)
(a) Connect the Techstream to the DLC3.
(b) Turn the ignition switch to ON.
(c) Turn the Techstream on.
(d) Clear the DTCs Reading and Clearing Diagnostic Trouble Codes.
(e) Start the engine and warm it up.
(f) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(g) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
(h) Read the pending DTCs.
Result:
HINT
DTC P0014 or P0015 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 Removal
A -- END