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 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. Idle the engine for 5 minutes or more [C].
8. Enter the following menus: Powertrain / Engine / Trouble Codes.
9. Read the Pending DTCs [G].
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 [D].
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. 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 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.
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.
* 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 the 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)
(a) Connect the Techstream to the DLC3.
(b) Start the engine.
(c) Turn the Techstream on.
(d) Check the camshaft timing oil control valve assembly for intake camshaft.
(1) Enter the following menus: Powertrain / Engine / Active Test / Control the VVT Linear (Bank 1).
(2) Check the engine speed while operating the camshaft timing oil control valve assembly (for intake camshaft) using the Techstream.
Result:
(e) 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:
HINT
If the VVT system can be operated using the Active Test, it can be assumed that the VVT system is operating normally.
NG -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT)
OK -- Continue to next step.
3. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0017)
(a) Connect the Techstream to the DLC 3.
(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.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Start the engine.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(i) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
(j) Read the 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 -- INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT)
A -- CHECK FOR INTERMITTENT PROBLEMS Check for Intermittent Problems
4. INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (FOR INTAKE OR EXHAUST CAMSHAFT)
HINT
Inspect the specified camshaft timing oil control valve assembly (for intake or exhaust camshaft) in accordance with the inspection result of step 2.
(a) Remove the camshaft timing oil control valve assembly (for intake or exhaust camshaft).
(b) Measure the resistance according to the value(s) in the table below.
Standard Resistance:
Text in Illustration
(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 intake or exhaust camshaft).
NG -- REPLACE CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY (INTAKE OR EXHAUST CAMSHAFT) Removal
OK -- Continue to next step.
5. CHECK VALVE TIMING (CHECK FOR LOOSE TIMING CHAIN AND JUMPED TEETH) P0011
NG -- ADJUST VALVE TIMING Reassembly
OK -- Continue to next step.
6. INSPECT OIL CONTROL VALVE FILTER P0011
NG -- REPLACE OIL CONTROL VALVE FILTER Disassembly
OK -- Continue to next step.
7. REPLACE CAMSHAFT TIMING GEAR ASSEMBLY (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.
8. CHECK WHETHER DTC OUTPUT RECURS (DTC P0016 OR P0017)
(a) Connect the Techstream to the DLC 3.
(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.
(f) Turn the ignition switch to ON and turn the Techstream on.
(g) Start the engine.
(h) Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
(i) Enter the following menus: Powertrain / Engine / Trouble Codes / Pending.
(j) Read the pending DTCs.
Result:
B -- REPLACE ECM Removal
A -- END