Component Location

1. CVVL Position 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. ECU monitors the temperature of CVVL motor and wire because CVVL motor consumes large amount of power.

DTC Description

ECU sets P06A5 when the CVVL Position Sensor is short to power.

DTC Detecting Condition

Item

Detecting Condition

Possible Cause

DTC Strategy

•

Compare the supply voltage and threshold.

1.

CVVL Position Sensor

2.

Poor connection

3.

Open circuit of power line or short circuit to ground

4.

Open circuit of signal line or short circuit to ground

Enable Conditions

•

IG ON

Threshold Value

•

Supply voltage is higher than 5.35V.

Diagnostic Time

•

0.1sec.

MIL On Condition

•

Second driving cycle (MIL On)

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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