Geely EC715 2009, Workshop Manual

Page: 728 / 2181

System 2.2.1.3 Altitude and Atmospheric Pressure
Correlation ".
Similar?
No
Replace the intake manifold pressure /
temperature sensor.
Yes
Step 4
Check the intake manifold pressure (MAP) sensor value with the engine running.
(a) Start the engine.
(b) When idling, observe the intake manifold pressure (MAP)
sensor values.
(c) During acceleration, observe the intake manifold pressure
(MAP) sensor values.
(d) Compare the above intake manifold pressure (MAP) sensor
values.
Are above intake manifold pressure (MAP) sensor values
changed?
Yes
Go to step 7
No
Step 5
Check the intake manifold pressure sensor.
(a) Shut down the engine.
(b) Turn the ignition switch to "ON".
(c) Without disconnecting the intake manifold pressure sensor
wiring harness connector, pull out the intake manifold
pressure sensor from the intake manifold and use the
vacuum pump. install the vacuum pump tube to the intake
manifold pressure sensor.
(d) Apply 50 kPa pressure on the intake manifold pressure
sensor.
Observe whether the intake manifold pressure (MAP) sensor value
changes?
No
Replace the intake manifold pressure /
temperature sensor.
Yes
Step 6
Check the intake manifold pressure sensor installation port and vacuum tubes.
(a) Check the intake manifold pressure sensor installation port
and vacuum tubes.
Are the installation port and vacuum tubes blocked?
Yes
Clean and service the intake manifold and
vacuum tubes.
No
Go to step 9
2-646 Control System JL4G15-D Engine
EC718/EC718RV EC715/EC715RV 10/2009