Geely EC718 2009 Workshop Manual page 144

2-62 Control System JL4G18-D
Ignition Switch
Data Stream Name
Canister Control
Valve Duty Cycle
Canister Purification
Rate
Canister Load
2.2.7.10 Action Test Table
By reading the "Action Test Table" on the scan tool, you can check switches, sensors, actuators working state without removing any
parts. Before the control system diagnosis, carrying out action test is a prerequisite, so that the diagnose time could be shortened.
Note
Data under normal conditions is listed in the following table for reference only. Do not determine whether a part is faulty
solely based on these reference values. Under normal circumstances you can compare the vehicle that needs to be
repaired with a normal working vehicle in the same state to determine the current vehicle diagnostic data is normal or
not.
1. Run the engine to reach normal working temperature.
2. Turn the ignition switch to "OFF" position.
3. Connect scan tool.
4. Turn the ignition switch to "ON" position.
5. Select "engine"/"action test".
6. Refer to the following table to test.
Scan Tool Display
Item
Fault Indicator
EC718/EC718RV EC715/EC715RV 10/2009
Idle Speed
"ON"
0% 0%
0% 0%
1 3.2
Test Component
Enable the engine fault
indicator.
2,500 rpm
When
parameter shows the evaporative emission
control module commands (EVAP) solenoid
valve Canister clean-up power supply time or
100%
duty cycle. 0% indicates that no clean-up carried
out and 100% indicates always clean-up.
Fuel evaporative emission control system
0.1%
prevents hydrocarbons (HC) overflow from the
fuel tank into the atmosphere, polluting the
environment. Collect the fuel vapor into the
Canister. ECM controls solenoid valve (EVAP) to
remove Canister collected fuel vapor steam and
make it into the engine for combustion. In the
actual repair work, compare the data stream to
0.7
the actual solenoid valve opening. If a leak
occurs, it is necessary to know how to determine.
Note that only when the engine reaches the
normal temperature, the data stream will increase
from a small value. When idling or engine cold,
the EVAP will not open.
Control Range
When the engine is running (or) the ignition switch
is turned on, with the signal accepted, the engine
ON/OFF control module will request the fault indicator to
light through the CAN bus. The fault indicator will
be on or off in 3-5s.
Diagnosis Description
Diagnosis Description
Engine