Great Wall GW491QE, Руководство по обслуживанию

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EF.1-38
Yes Next step.
4
Check whether the inlet-air pressure is within 35kpa and 65kpa while engine is
running at idle-speed.
No Check and repair it.
Yes Next step.
5
Have the engine running at idle-speed, and do not connect the Pin 51 of ECU
to ground via short connection wire before the cooling-fluid temperature
reaches its normal value; Check whether the ignition lead-angle is of a 6.75
o
rotating angle of crankshaft.
No
Adjust the ignition
lead-angle.
Yes Next step.
6
Connect the fuel manometer valve. And have the Pin 30 of fuel pump relay
short-circuit connected with the Pin 87, and check whether the fuel pressure is
within 250kpa and 300kpa while the fuel pump is working.
No 11
Yes 10
7
Check whether the oil injector is working in a normal way after it’s been
provided with a 12V voltage by accumulator via special connector.
No Next step.
Yes Next step.
8
Re-check whether the oil injector is working in a normal way after it’s been
washed.
No Change the oil injector
Yes Change the fuel
9 Check whether fuel contains water or has deteriorated.
No 15
Yes Next step.
10 Check whether the fuel pressure is below 250kpa.
No 14
Yes Next step.
11
When the valve on fuel meter is closed before a re-connection with ignition
switch to drive the fuel pump working for another three seconds, check
whether it’s able to produce an oil pressure.
No 13
Yes
Change the fuel pressure
adjustor
12
When the valve on fuel meter is opened before oil return pipe is being clamped
by oil-return barrier to stop oil return, check whether it’s able to produce oil
pressure rapidly.
No
Repair or change the oil
injector or oil pipe.
Yes
Repair or change the oil
inlet pipe 13 Check whether the oil inlet pipe has any leakage or has been blocked.
No Change the oil pump
Yes
Repair or change the oil
return pipe
14 Check whether the oil return pipe has been bent or blocked.
No
Change the fuel pressure
adjustor
Yes Next step.
15
Place ignition switch on the ON
”
position, connect a commutator between
ECU and wiring harness, and check whether respective voltage on the Pin 53
signal output end of throttle position sensor , Pin 30 ground end , and Pin
12 used as one 4.5V~5V power supply to sensor of ECU is normal.
No
Repair or change the
wiring harness
Yes Change the ECU
16
Check whether ignition coil, high-voltage line, and spark plug are under a
normal condition.
No
Repair or change relevant
parts and components.
12
．
Slow response to acceleration
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
Provide service as per the
list of idle-speed failures.
Yes Next step.
4
Check whether the inlet-air pressure is within 35kpa and 65kpa while engine
is running at idle-speed.
No Check and repair it.
United Electronic engine management system-Genaral troubes hooting and steps
to engine
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