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.PCM accurately controls the CVVL motor by PWM type receiving power from battery.
ECU sets P1030 when the power voltage for the CVVL motor control from PCM is lower than 6V.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
The power voltage from PCM to DC motor is lower than threshold. | 1. CVVL Motor 2. Poor connection 3. Open circuit of power line or short circuit to ground |
EnableConditions |
•
Battery voltage is higher than 10V and lower than 16V.
•
No P013C
•
CVVL Relay ON | |
Threshold value |
•
lower than 6V | |
Diagnosis Time |
•
1.27 sec | |
MIL On Condition |
•
Second driving cycle (MIL On) |
Voltage | DC 13.5V |
MOTOR Operating voltage | DC 9 ~ 16V |
MOTOR Operating temperature | - 4℉ ~ 302℉ |
MOTOR Operating humidity | 30% ~ 80% |
Check the status of CVVL Motor relay ON/OFF using GDS current data.
