Toyota Tundra Service Manual: Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A) (P0016-P0019)

Toyota Tundra Service Manual / Engine, Hybrid System / 1ur-fe Engine Control / Sfi System / Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A) (P0016-P0019)

DESCRIPTION

In the VVT (Variable Valve Timing) system, the appropriate intake and exhaust valve open and close timing is controlled by the ECM. The ECM performs intake and exhaust 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 camshaft and crankshaft.

DTC No.	DTC Detection Condition	Trouble Area
P0016	Deviation in crankshaft position sensor signal and VVT sensor (for Intake Side of Bank 1) signal (2 trip detection logic)	Valve timing Camshaft timing oil control valve (for intake side of bank 1) Camshaft timing gear assembly ECM
P0017	Deviation in crankshaft position sensor signal and VVT sensor (for Exhaust Side of Bank 1) signal (2 trip detection logic)	Valve timing Camshaft timing oil control valve (for exhaust side of bank 1) Camshaft timing exhaust gear assembly ECM
P0018	Deviation in crankshaft position sensor signal and VVT sensor (for Intake Side of Bank 2) signal (2 trip detection logic)	Valve timing Camshaft timing oil control valve (for intake side of bank 2) Camshaft timing gear assembly ECM
P0019	Deviation in crankshaft position sensor signal and VVT sensor (for Exhaust Side of Bank 2) signal (2 trip detection logic)	Valve timing Camshaft timing oil control valve (for exhaust side of bank 2) Camshaft timing exhaust gear assembly ECM

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 stores DTC P0016 (Bank 1) or P0018 (Bank 2).

To monitor the correlation of the exhaust 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 exhaust valve timing is set to the most advanced 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 stores DTC P0017 (Bank 1) or P0019 (Bank 2).

MONITOR STRATEGY

Related DTCs	P0016: Camshaft timing misalignment at idling (Bank 1 Intake Side) P0017: Camshaft timing misalignment at idling (Bank 1 Exhaust Side) P0018: Camshaft timing misalignment at idling (Bank 2 Intake Side) P0019: Camshaft timing misalignment at idling (Bank 2 Exhaust Side)
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	None
Engine RPM	400 to 1400 rpm

TYPICAL MALFUNCTION THRESHOLDS

Intake Side

One of following conditions met	-
VVT learning value at maximum retarded valve timing	Less than 22.23°CA
VVT learning value at maximum retarded valve timing	More than 46.68°CA

Exhaust Side

One of following conditions met	-
VVT learning value at maximum advanced valve timing	Less than 82.23°CA
VVT learning value at maximum advanced valve timing	More than 106.68°CA

CONFIRMATION DRIVING PATTERN

Connect the Techstream to the DLC3.
Turn the ignition switch to ON and turn the Techstream on.
Clear the 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 the 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, P0017, P0018 or P0019.

Check the DTC judgment result.

Tester 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 judgment result shows INCOMPLETE or N/A, perform steps [E] through [G].

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 the 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 (See page ).
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 (See page ).

Refer to DTC P0340 (See page ).

Refer to DTC P0365 (See page ).

CAUTION / NOTICE / HINT

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.
Bank 1 refers to the bank that includes the No. 1 cylinder*.
*: The No. 1 cylinder is the cylinder which is farthest from the transmission.
Bank 2 refers to the bank that does not include the No. 1 cylinder.

PROCEDURE

1.	CHECK ANY OTHER DTCS OUTPUT (IN ADDITION TO DTC P0016, P0017, P0018 OR P0019)

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Enter the following menus: Powertrain / Engine and ECT / Trouble Codes.

(e) Read DTCs.

Result

Result	Proceed to
P0016, P0017, P0018 or P0019 is output	A
P0016, P0017, P0018 or P0019 and other DTCs are output	B

HINT:

If any DTCs other than P0016, P0017, P0018 or P0019 are output, perform troubleshooting for those DTCs first.

GO TO DTC CHART

2.	PERFORM ACTIVE TEST USING TECHSTREAM (OPERATE OCV)

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.

(d) Warm up the engine.

(e) Enter the following menus: Powertrain / Engine and ECT / Active Test / Control the VVT Linear (Bank 1) or Control the VVT Linear (Bank 2) or Control the VVT Exhaust Linear (Bank 1) or Control the Exhaust VVT Linear (Bank 2) / All Data / VVT Change Angle #1, VVT Change Angle #2, VVT Ex Chg Angle #1, VVT Ex Chg Angle #2.

(f) Perform the Active Test. Check that the displacement angle varies.

OK:

Displacement angle varies

GO TO STEP 4

3.	CHECK ENGINE MECHANICAL SYSTEM

(a) Check the engine mechanical system (See page ).

GO TO STEP 7

4.	INSPECT CAMSHAFT OIL CONTROL VALVE ASSEMBLY

REPLACE CAMSHAFT OIL CONTROL VALVE ASSEMBLY

5.	INSPECT OIL CONTROL VALVE FILTER

(a) Remove the OCV filter (See page ).

(b) Check that the filter is not clogged.

OK:

Filter is not clogged.

REPLACE OIL CONTROL VALVE FILTER

6.	REPLACE CAMSHAFT TIMING GEAR ASSEMBLY OR CAMSHAFT TIMING EXHAUST GEAR ASSEMBLY

(a) Replace the camshaft timing gear assembly (See page ).

(b) Replace the camshaft timing exhaust gear assembly (See page ).

HINT:

Perform "Inspection After Repair" after replacing the camshaft timing gear assembly or camshaft timing exhaust gear assembly (See page ).

7.	CHECK WHETHER DTC OUTPUT RECURS

(a) Connect the Techstream to the DLC3.

(b) Turn the ignition switch to ON.

(d) Clear the DTC (See page ).

(e) Start the engine and warm it up.

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

(g) Read the output pending DTCs using the Techstream.

OK:

No pending DTC is output.

END

GO TO DTC CHART

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