TYPICAL MALFUNCTION THRESHOLDS
CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016)
PERFORM ACTIVE TEST USING TECHSTREAM (CONTROL THE VVT LINEAR)
INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY
INSPECT OIL CONTROL VALVE FILTER
REPLACE CAMSHAFT TIMING GEAR ASSEMBLY
CHECK WHETHER DTC OUTPUT RECURS (DTC P0016)
DTC 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.| DTC No. | DTC Detection Condition | Trouble Area |
| P0016 | Deviation in crankshaft and camshaft position sensor signals (2 trip detection logic) |
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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
| Related DTCs | P0016: Camshaft timing misalignment at idling |
| Required Sensors/Components (Main) | VVT actuator |
| Required Sensors/Components (Related) | Camshaft position sensor, Crankshaft position sensor |
| Frequency of Operation | Continuous |
| Duration | Within 1 minute |
| MIL Operation | 2 driving cycles |
| Sequence of Operation | None |
TYPICAL ENABLING CONDITIONS
| Monitor runs whenever following DTCs not present | P0010 (VVT OCV) P0016 (VVT system 1 - misalignment) P0102, P0103 (Mass Air Flow Meter) P0115, P0117, P0118 (Engine Coolant Temperature Sensor) P0125 (Insufficient Coolant Temperature for Closed Loop Fuel Control) P0335 (Crankshaft Position Sensor) P0340 (Camshaft Position Sensor) |
| Engine RPM | 450 to 1000 rpm |
TYPICAL MALFUNCTION THRESHOLDS
| One of following conditions met | - |
| VVT learning at maximum retarded valve timing | Less than 25°CA |
| VVT learning at maximum retarded valve timing | More than 51°CA |
CONFIRMATION DRIVING PATTERN
- Connect the Techstream to the DLC3.
- Turn the ignition switch to ON and turn the Techstream on.
- Clear DTCs (even if no DTCs are stored, perform the clear DTC operation).
- Turn the ignition switch off and wait for at least 30 seconds.
- Turn the ignition switch to ON and turn the Techstream on [A].
- Start the engine and warm it up until the ECT reaches 75°C (167°F) or higher [B].
- Idle the engine for 5 minutes or more [C].
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [D].
- 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.
- Enter the following menus: Powertrain / Engine and ECT / Utility / All Readiness.
- Input the DTC: P0016.
- Check the DTC judgment result.
Techstream Display Description NORMAL - DTC judgment completed
- System normal
ABNORMAL - DTC judgment completed
- System abnormal
INCOMPLETE - DTC judgment not completed
- Perform driving pattern after confirming DTC enabling conditions
N/A - Unable to perform DTC judgment
- Number of DTCs which do not fulfill DTC preconditions has reached ECU memory limit
- 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].
- DTC judgment completed
- Drive the vehicle for 2 to 3 minutes [E].
- CAUTION:
- When performing the confirmation driving pattern, obey all speed limits and traffic laws.
- Idle the engine for 5 minutes or more [F].
- Enter the following menus: Powertrain / Engine and ECT / Trouble Codes [G].
- 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.
- Check the DTC judgment result.
- If the test result is INCOMPLETE or N/A and no pending DTC is output, perform a universal trip and check for permanent DTCs (YARIS_NCP93 RM000000PDK0T5X.html).
- 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 (YARIS_NCP93 RM000000PDW0K5X_07.html).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.
| 1.CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.
Read DTCs.
Result Result Proceed to DTC P0016 is output A DTC P0016 and other DTCs are output B - HINT:
- If any DTCs other than P0016 are output, troubleshoot those DTCs first.
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| A | |
| 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.
Connect the Techstream to the DLC3.
Start the engine.
Turn the A/C on.
Turn the Techstream on.
Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1) / VVT Change Angle #1.
Perform the Active Test. Check that the displacement angle varies.
- OK:
- Displacement angle varies.
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| OK | |
| 3.ADJUST VALVE TIMING |
Adjust the valve timing (YARIS_NCP93 RM000001DFR02KX.html).
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| 4.INSPECT CAMSHAFT TIMING OIL CONTROL VALVE ASSEMBLY |
Inspect the camshaft timing oil control valve assembly (YARIS_NCP93 RM000003VHJ00FX.html).
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| OK | |
| 5.INSPECT OIL CONTROL VALVE FILTER |
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Remove the oil control valve filter.
Check that the filter is not clogged.
- OK:
- Filter is not clogged.
Text in Illustration *1 Oil Control Valve Filter
Reinstall the oil control valve filter.
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| OK | |
| 6.REPLACE CAMSHAFT TIMING GEAR ASSEMBLY |
Replace the camshaft timing gear assembly (YARIS_NCP93 RM000001DCS015X.html).
- HINT:
- Perform "Inspection After Repair" after replacing the camshaft timing gear assembly (YARIS_NCP93 RM000004NJD006X.html).
| NEXT | |
| 7.CHECK WHETHER DTC OUTPUT RECURS (DTC P0016) |
Connect the Techstream to the DLC3.
Turn the ignition switch to ON.
Turn the Techstream on.
Clear the DTCs (YARIS_NCP93 RM000000PDK0T5X.html).
Turn the ignition switch off and wait for at least 30 seconds.
Turn the ignition switch to ON.
Turn the Techstream on.
Start the engine and warm it up.
Drive the vehicle in accordance with the driving pattern described in the Confirmation Driving Pattern.
Enter the following menus: Powertrain / Engine and ECT / Trouble Codes / Pending.
Read pending DTCs.
Result Result Proceed to DTC is not output A DTC P0016 is output B
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| A | ||
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