Geely EC718 2009 Workshop Manual page 155

Engine
Yes
Diagnostic completed.
Step 7
5. Repair Instructions:
Replace VVT solenoid valve. Refer to
2.2.7.13 DTC P000A P0012
1. DTC Descriptor:
DTC
DTC
The intake camshaft position actuator is connected to the intake camshaft and operated by hydraulic pressure. The hydraulic
pressure is provided by the engine oil pump in order to change the intake camshaft to the crankshaft relative position (CKP ) angle.
The intake VVT solenoid valve power supply is provided by The Main Relay. ECM modulates the pulse-width to control signal ground,
thus controlling the camshaft position actuator engine oil flow. Engine oil pressure moves the camshaft position actuator slide valve
at the front of the camshaft. When the safety slide valve is operated, the engine oil is imported into the camshaft position actuator,
so that camshaft rotates. The intake camshaft cam actuator can change the camshaft working angle up to 50°.
2. Conditions For Setting DTC and The Fault Location:
DTC Code DTC Detection Strategy
VVT actual angle and target angle
P000A
difference is too great.
2.2.8.4 VVT Solenoid Valve Replacement and Filter
P000A Intake VVT Slow Response
P0012 VVT is not at the default location during air intake process.
Conditions For Setting The DTC
1. VVT actual angle and target angle
2. Camshaft completed self learn.
3. Engine oil temperature is between
4. Engine coolant temperature is
5. Engine speed is between 600 rpm to
6. No VVT circuit fault.
Control System JL4G18-D
(e) Road test the vehicle for at least 10 min.
(f) Read DTC control system code again to confirm that there is
no DTC code.
No
(Control Strategy)
difference is too great.
-40°C (-40 ºF) and 120°C (248 ºF).
between 0°C (32 ºF) and 105°C
(221 ºF ).
6,000 rpm.
EC718/EC718RV EC715/EC715RV 10/2009
Intermittent Fault. Refer to
Fault Check
Cleaning.
Fault Locations
1. Valve Timing Chain
2. VVT Solenoid Valve
3. Solenoid Valve Filter
4. VVT Actuator Assembly
5. ECM
2-73
2.2.7.3 Intermittent