Chery automobile Service Manual page 179

5) Difficult start-up of cold engine
Item
Operation procedure
No.
Turn the ignition switch to "ON"
position. Inspect with the diagnostic
1
tester verify that there is any
malfunction information record.
Inspect with multimeter to see
whether the coolant temperature
sensor is normal. (Or connect a
1.5KΩ resistance in series with
ECU's pin of 39# and 35# to replace
2
the function
temperature sensor to start up the
engine. If the engine can be started, it
indicates that the coolant temperature
sensor is abnormal.)
Turn the ignition switch to "ON"
position and connect the adaptor
between ECU and the wiring harness.
3 Verify that the voltages at following
ECU pins are normal: 13# is at about
12V of battery voltage; 80# and 61#
are at zero.
Verify that the air filter is free of any
4
blockage.
After start up, verify that the air
intake manifold
5
maintained between 35-65 kPa at idle
speed.
Step on the throttle gently to verify
6
that it is easy to be started up.
Disconnect the connector of idle
speed actuator before the temperature
7
of engine coolant reaches 35
order to observe whether the engine
speed is decreasing.
Connect the fuel manometer valve
8
(the connecting point will depend on
of the coolant
pressure is
in
G-70
Inspection
Follow-up procedure
results
Fix the indicated
Yes
malfunction
No Proceed to next step.
Yes Proceed to next step.
No Replace the sensor
Yes Proceed to next step.
Inspect the wiring harness
No
and plug in connector
Yes Proceed to next step.
No
Yes Proceed to next step.
Fix the leakage of air
No
intake system.
Inspect the throttle valve
Yes
and idle speed passage.
No Proceed to next step.
Yes Proceed to next step.
Repair or replace the idle
No
speed actuator
Yes Proceed to next step.
Replace