Component Location

1. CVVL Sensor

General Description

CVVL (Continuously Variable Valve Lift) is a system that can change the valve lift continuously and it controls the amount of air flow by variable valve lifting. CVVL drives the valve lifts with optimization for engine RPM and improves fuel efficiency through reducing the pumping and friction loss. Also it can reduce the activation time of catalyst by improvement of response speed for acceleration.

PCM receives the angle value of CVVL position control shaft from CVVL position sensors.

DTC Description

ECU sets P1035 when ECU receives the communication error message from one of the CVVL position sensor1 or 2.

DTC Detecting Condition

Item

Detecting Condition

Possible cause

DTC Strategy

•

Communication error message from one of the CVVL position sensor1 or 2

•

Self-diagnosis error for CVVL position sensor

1.

CVVL position sensor

2.

Poor connection

EnableConditions

•

Battery voltage is higher than 10V and lower than 16V.

•

No P06A4 and P06A5

Threshold value

•

Communication error or self-diagnosis error

Diagnosis Time

•

0.15 sec

MIL On Condition

•

MIL Off

Diagnostic Circuit Diagram
Signal Waveform & Data

Check the changes of actual position and target position of CVVL giving variety to valve lifting during engine running. (0~100%)

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