VIS(Variable intake system) is a device which varies the length of intake manifold to genetate maximum power at certain RPM. VIS lengthens intake manifold to improve the torque at low RPM when vehicle speed is low while it shortens intake manifold to raise torque at high RPM when vehicle speed is high. PCU controlls VIS using RPM signal.
PCM sets P0661 when detects electrical error in circuit. (Short to ground / Open circuit)
Item | Detecting Condition | Possible Cause |
DTC Strategy |
•
Electrical Check | 1. Open or Short to Ground in Control circuit 2. Open or Short to Ground in Power circuit 3. Poor connection or damaged harness 4. Faulty VIS Sol. Valve |
Enable Conditions |
•
6V < Battery voltage < 16V
•
Engine running | |
Threshold Value |
•
Short to ground
•
Open circuit | |
Diagnostic Time |
•
3 sec. | |
MIL On Condition |
•
2 driving cycle |
Temp. | VIS Sol. Valve resist |
22℃ (72℉) | 30 ~ 35Ω |
