P0016

2AZ-FE ENGINE CONTROL SYSTEM: SFI SYSTEM: P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
P0016 - Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

DESCRIPTION

The ECM optimizes the valve timing by using the VVT (Variable Valve Timing) system to control the intake camshaft. The VVT system includes the ECM, the Camshaft Timing Oil Control Valve (OCV) and the VVT controller (camshaft timing gear assembly). The ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure supplied to the VVT controller. The VVT controller can advance or retard the intake camshaft.





MONITOR DESCRIPTION

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

This DTC indicates that the intake camshaft has been installed toward the crankshaft at an incorrect angle, 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





TYPICAL MALFUNCTION THRESHOLDS





CONFIRMATION DRIVING PATTERN





1. Clear the DTCs (even if no DTCs are stored, perform the clear DTC operation) [A].

2. Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [B].

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

4. Enter the following menus: Powertrain / Engine and ECT / Trouble Code / Pending.

5. Read Pending DTCs [D].

HINT
If a pending DTC is output, the system is malfunctioning.

6. If a pending DTC is not output, enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

7. Input the DTC: P0016.

8. Check the DTC judgment result [D].





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

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

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

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

11. Enter the following menus: Powertrain / Engine and ECT / Trouble Code / Pending.

12. Read Pending DTCs [G].

HINT
If a pending DTC is output, the system is malfunctioning.

13. If a pending DTC is not output, enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.

14. Input the DTC: P0016.

15. Check the DTC judgment result [G].

16. If the test 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
Read freeze frame data using the Techstream. Freeze frame data records the engine condition when malfunctions are detected. 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)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(c) Turn the Techstream ON.

(d) Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.

(e) Read DTCs.

Result

Result:

HINT
If any DTCs other than P0016 are output, troubleshoot those DTCs first.

B -- GO TO DTC CHART Engine Control System - SFI System
A -- Continue to next step.

2. PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV)

(a) Connect the Techstream to the DLC3.

(b) Start the engine.

(c) Turn the Techstream ON.

(d) Warm up the engine.

(e) Select the following menu items: Powertrain / Engine and ECT / Active Test / Control the VVT System (Bank 1).

(f) Select the following monitor items: Powertrain / Engine and ECT / Data List / VVT Change Angle (Bank1) and VVT OCV Duty (Bank1).

(g) Check that the VVT change angle varies when operating the camshaft timing oil control valve using the Techstream.

OK:

The VVT change angle value and engine speed vary.

NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
OK -- Continue to next step.

3. ADJUST VALVE TIMING P0011

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

4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY P0011

NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Removal
OK -- Continue to next step.

5. INSPECT OIL CONTROL VALVE FILTER P0011

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

6. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY

(a) Replace camshaft timing gear assembly Removal.

NEXT -- Continue to next step.

7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016)

(a) In order to erase the ECM learned values for valve timing, disconnect the cable from the negative (-) battery terminal for 1 minute.

(b) Reconnect the cable to the negative (-) battery terminal.

(c) Connect the Techstream to the DLC3.

(d) Turn the ignition switch to ON.

(e) Turn the Techstream ON.

(f) Clear DTCs DTC Check / Clear.

(g) Start the engine and idle it for 5 minutes.

(h) Refer to the confirmation driving pattern for P0016.

(i) Select the following menu items: Powertrain / Engine and ECT / Trouble Codes.

(j) Read DTCs.

Result

Result:

B -- REPLACE ECM Electronic Circuit Inspection Procedure

A -- END