P0016
1NZ-FE ENGINE CONTROL: SFI SYSTEM (for Hatchback): P0016: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)
DESCRIPTION
In the VVT (Variable Valve Timing) system, the appropriate intake valve open and close timing is controlled by the ECM. The ECM performs intake valve control by performing the following: 1) controlling the camshaft and camshaft timing oil control valve, and operating the camshaft timing gear; and 2) changing the relative positions of the gaps between the camshaft and crankshaft.
MONITOR DESCRIPTION
To monitor the correlation of the intake camshaft position 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 position 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 DTC P0016.
MONITOR STRATEGY
TYPICAL ENABLING CONDITIONS
TYPICAL MALFUNCTION THRESHOLDS
CONFIRMATION DRIVING PATTERN
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to ON and turn the Techstream on.
3. Clear 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 and ECT / 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 and ECT / Utility / All Readiness.
11. Input the DTC: P0016.
12. Check the DTC judgment result.
HINT
* If the judgment result shows ABNORMAL, the system has a malfunction.
* If the result shows INCOMPLETE or N/A, 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 and ECT / 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 test result is INCOMPLETE or N/A 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.
WIRING DIAGRAM
Refer to DTC P0010 P0010.
INSPECTION PROCEDURE
HINT
* The monitor for this DTC detects when the timing chain is shifted by one tooth or more.
* 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)
(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 and ECT / Trouble Codes.
(e) Read DTCs.
Result
HINT
If any DTCs other than P0016 are output, troubleshoot those DTCs first.
B -- GO TO DTC CHART SFI System (for Hatchback)
A -- Continue to next step.
2. PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)
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) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1) / VVT Change Angle #1.
(f) Perform the Active Test. Check that the displacement angle varies.
OK:
Displacement angle varies.
NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
OK -- Continue to next step.
3. ADJUST VALVE TIMING
(a) Adjust the valve timing Disassembly (from 07/2011).
NEXT -- CHECK WHETHER DTC OUTPUT RECURS (DTC P0016)
4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
(a) Inspect the camshaft timing oil control valve assembly Inspection (from 07/2011).
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY Removal (from 07/2011)
OK -- Continue to next step.
5. INSPECT OIL CONTROL VALVE FILTER P0011
NG -- CLEAN OR REPLACE OIL CONTROL VALVE FILTER
OK -- Continue to next step.
6. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
(a) Replace the camshaft timing gear assembly Removal (from 07/2011).
HINT
Perform "Inspection After Repair" after replacing the camshaft timing gear assembly Programming and Relearning.
NEXT -- Continue to next step.
7. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016)
(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) 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 and ECT / Trouble Codes / Pending.
(k) Read pending DTCs.
Result
B -- REPLACE ECM Removal (from 07/2011)
A -- END