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P0016





1AR-FE ENGINE CONTROL: SFI SYSTEM: P0016,P0017: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)


DESCRIPTION

The ECM optimizes the valve timing by using the Variable Valve Timing (VVT) system to control the intake and exhaust camshafts. 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 intake and exhaust camshafts.





MONITOR DESCRIPTION

To monitor the correlation of the intake and exhaust camshaft positions and crankshaft position, the ECM checks the VVT learned value while the engine is idling. The VVT learned value is calibrated based on the camshaft positions and crankshaft position. The intake valve timing is set to the most retarded angle while the engine is idling. If the VVT learned value is out of the specified range in consecutive driving cycles, the ECM illuminates the MIL and stores the DTC.

This DTC indicates that the intake and exhaust camshaft timing positions are incorrect with respect to the crankshaft, caused by factors such as the timing chain having jumped a tooth.

This monitor begins to run after the engine has idled for 5 minutes.

MONITOR STRATEGY





TYPICAL ENABLING CONDITIONS

Intake Side





Exhaust Side





TYPICAL MALFUNCTION THRESHOLDS

Intake Side





Exhaust Side





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 operation).

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 ECT reaches 75°C (167°F) or higher [B].

7. Idle the engine for 5 minutes or more [C].

8. Enter the following menus: Powertrain / Engine / Trouble Codes [D].

9. Read pending DTCs.

HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.

10. Enter the following menus: Powertrain / Engine / Utility / All Readiness.

11. Input the DTC: P0016 or P0017.

12. Check the DTC judgment result.





HINT
* If the judgment result shows NORMAL, the system is normal.
* If the judgment result shows ABNORMAL, the system has a malfunction.
* If the judgment result shows INCOMPLETE or UNKNOWN, perform steps [E] through [G].

13. Drive the vehicle for 2 to 3 minutes [E].

CAUTION:
When performing the confirmation driving pattern, obey all speed limits and traffic laws.

14. Idle the engine for 5 minutes or more [F].

15. Enter the following menus: Powertrain / Engine / Trouble Codes [G].

16. Read pending DTCs.

HINT
* If a pending DTC is output, the system is malfunctioning.
* If a pending DTC is not output, perform the following procedure.

17. Check the DTC judgment result.

18. If the judgment result is INCOMPLETE or UNKNOWN and no pending DTC is output, perform a universal trip and check for permanent DTCs DTC Check / Clear.

HINT
* If a permanent DTC is output, the system is malfunctioning.
* If no permanent DTC is output, the system is normal.

WIRING DIAGRAM

Refer to DTC P0335 P0335.

INSPECTION PROCEDURE

HINT
* DTC P0016 or P0017 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.
* If DTC P0016 is displayed, check the VVT system for intake camshaft.
* If DTC P0017 is displayed, check the VVT system for exhaust camshaft.
* 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.

PROCEDURE

1. CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016 AND P0017)

(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 DTCs.

Result





HINT
If any DTCs other than P0016 or P0017 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)

HINT
If the VVT system can be operated through the Active Test, it can be assumed that the VVT system is operating normally.

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Turn the A/C on.

(d) Turn the Techstream on.

(e) Check the camshaft timing oil control valve assembly (for intake camshaft).

(1) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT System (Bank 1).

(2) Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream.

Result





(f) Check the camshaft timing oil control valve assembly (for exhaust camshaft).

(1) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Exhaust Linear (Bank 1).

(2) Check the engine speed while operating the camshaft timing oil control valve assembly (for exhaust camshaft) using the Techstream.

Result





NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT)
OK -- Continue to next step.

3. ADJUST VALVE TIMING

(a) Adjust the valve timing Removal.

NEXT -- CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0017)

4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT)

(a) Inspect the camshaft timing oil control valve assembly (for intake or exhaust camshaft) Testing and Inspection.

NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT) Removal
OK -- Continue to next step.

5. 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.

Text in Illustration





NG -- CLEAN OR REPLACE OIL CONTROL VALVE FILTER Disassembly
OK -- Continue to next step.

6. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT)

(a) Replace the camshaft timing gear assembly (camshaft timing gear assembly for intake or exhaust camshaft) Removal.

NEXT -- Continue to next step.

7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0017)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream on.

(d) Clear the DTCs DTC Check / Clear.

(e) Turn the ignition switch off and wait for at least 30 seconds.

(f) Turn the ignition switch to ON.

(g) Turn the Techstream on.

(h) Start the engine and warm it up.

(i) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.

(j) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.

(k) Read pending DTCs.

Result





HINT
DTC P0016 or P0017 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 SFI System

A -- END
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