Great Wall GW491QE, Руководство по обслуживанию

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EF.1-37
S.N. Operation steps
Check
result
Follow-up steps
Yes Next step.
9
Check whether the resistance value of high-voltage line for each cylinder is
under a normal condition (about 16K
Ω
/m, specific data as given in the chapter
for “ignition system” ).
No Change it.
Yes Change the ECU
10 Check whether the spark plug is normal.
No Change the spark plug
10
．
The idle-speed is too high a self-learning is needed again after a power cut to ECU .
S.N. Operation steps
Check
result
Follow-up steps
Yes
Clear the displayed
failure away. 1
Place ignition switch to the ON
”
position. A fault diagnosis instrument may be
used to check whether there’s any record of failure information.
No Next step.
Yes Adjust or change it
2
Check whether the slider fastener connecting the gas pedal is too tight or has
got stuck.
No Next step.
Yes Adjust or change it.
3
Check whether the carbon-canister control valve, the fuel pressure adjustor, the
forced-ventilation vacuum pipe of crankshaft box, and the vacuum booster
hose within system are securely installed or have any damage.
No
Next step.
Yes Next step.
4
When engine is running at idle-speed, put shift to a neutral position, and step
on the braking pedal, and observe whether the rotating-speed at idle speed is
too much high.
No 6
Yes
Repair or change the
vacuum booster. 5
Observe whether the running at idle-speed is normal when vacuum hose is
being clamped.
No Next step.
Yes Change the PVC valve.
6
Observe whether the running at idle-speed is normal when the forced
ventilation vacuum pipe on crankshaft box is being clamped.
No Next step.
Yes
Change the
carbon-canister control
valve
7
Observe whether the running at idle-speed is normal when the hose of control
valve on carbon-canister is being clamped.
No Next step.
Yes Repair or change it.
8 Observe whether the idle-speed actuator is able to act flexibly or has got stuck.
No Next step.
Yes Repair or change it.
9 Check whether there’s any leakage at other places on air inlet pipe.
No Next step.
Yes Next step.
10 Check whether the sealing ring of oil injector is intact.
No Change the sealing ring.
Yes Change the ECU
11
Check whether the absolute pressure sensor and the air-inlet temperature
sensor of inlet manifold are intact. No Change the sensor
11
．
The rotating-speed is unable to go up or even flameout when accelerating
S.N. Operation steps
Check
result
Follow-up steps
Yes Clear the displayed failure
away.
1
Place ignition switch to the ON
”
position. A fault diagnosis instrument may be
used to check whether there’s any record of failure information.
No Next step.
Yes Next step. 2
Check whether the passage of air filter is free.
No Change it.
Yes Next step. 3
Check whether the engine rotating-speed is normal while it’s running at
idle-speed.
No Check and repair it as per
the list of idle-speed
failures.
United Electronic engine management system-Genaral troubes hooting and steps
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