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ES–82

2TR-FE ENGINE CONTROL SYSTEM – SFI SYSTEM

DTC

Crankshaft Position - Camshaft Position Correlation (Bank 1 Sensor A)

P0016

DESCRIPTION
Refer to DTC P0335 (See page ES-171).
DTCNo.
P0016

DTC Detection Condition
Deviations in crankshaft and camshaft position sensor
signals
(2 trip detection logic)

Trouble Area



Mechanical system (Timing chain has jumpedtooth
or chain stretched)
ECM

MONITOR DESCRIPTION

ES

The ECM optimizes the valve timing by using the VVT (Variable Valve Timing) system to control the intake
camshaft. The VVT system includesthe ECM, the Oil Control Valve (OCV) and the VVT controller. The
ECM sends a target duty-cycle control signal to the OCV. This control signal regulates the oil pressure
supplied to the VVTcontroller. The VVT controller can advance or retard the intake camshaft. The ECM
calibrates the intake valve timing by setting the intake camshaft to the most retarded angle while the
engine is idling. TheECM closes the OCV to retard the cam. The ECM stores this value as the VVT
learning value. When the difference between the target and actual intake valve timings is 5°CA
(Crankshaft Angle) or less,the ECM stores it.
If the VVT learning value matches the following conditions, the ECM determines the existence of a
malfunction in the VVT system, and sets the DTC.
• VVT learning value: Less than33°CA, or more than 51°CA.
• Above condition continues for 18 seconds or more.
This DTC indicates that the intake camshaft has been installed toward the crankshaft at an incorrect
angle, caused byfactors such as the timing chain having jumped a tooth.
This monitor begins to run after the engine has idled for 5 minutes.

MONITOR STRATEGY
Related DTCs

P0016: Camshaft timing (bank 1)misalignment

Required Sensors/Components (Main)

VVT actuator

Required Sensors/Components (Related)

Camshaft position sensor, Crankshaft position sensor

Frequency of Operation

Once per...
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