1. CVVL Motor
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.
ECU sets P0667 when the temperature of the inside of PCM is excessive and it is suddenly changed.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Temperature of CVVL motor is higher than threshold or it is suddenly changed during monitoring periods by 5ms. | 1. CVVL Motor 2. Short to power |
EnableConditions |
•
- | |
Threshold value |
•
- | |
Diagnosis Time |
•
- | |
MIL On Condition |
•
MIL off |
Voltage | DC 13.5V |
MOTOR Operating voltage | DC 9 ~ 16V |
MOTOR Operating temperature | - 4℉ ~ 302℉ |
MOTOR Operating humidity | 30% ~ 80% |
Modeling temperature of CVVL DC Motor : Monitoring DC motor
→ Operation temperature : -40 ~ 302 ℉
Temperature of the control circuit for CVVL DC motor : The temperature of the inside circuit of PCM
