Great Wall GW491QE, Руководство по обслуживанию

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EF.1-62
S.N. Operation steps
Check
result
Follow-up steps
Yes
Repair or change the wiring
harness.
3
Check whether the loop on the power supply end of cooling-fan relay is a
broken loop or short circuit to ground.
No
Continue to proceed until
step 2.
Yes Change the relay.
4
A multimeter may be used to check whether the voltage between the control
end (i.e. Pin 86) of cooling-fan relay and the negative electrode of power
supply is about 3.7V .
No Next step.
Yes
Repair or change the wiring
harness.
5
Check whether the loop between the control end (i.e. Pin 86) of relay and Pin
50 of ECU is a broken loop, or short circuit to power supply or ground.
No Next step.
Yes Diagnosis help.
6 Check whether the cooling-fan is working under a normal condition.
No Change the fan.
Fault code
：
P0500 The failure is caused by an inappropriate signal of vehicle speed.
”
S.N. Operation steps
Check
result
Follow-up steps
1
Connect with a diagnosis instrument, and place the ignition switch to the
OFF
”
position.
Next step.
Yes
Check and repair ABS
system.
2
For vehicles having been equipped with ABS system, check AB S system for
any fault code.
No Next step.
Yes Next step.
3 Check whether the needle of tachometer is working under a normal condition.
No
Check and repair the
instrumentation loop.
Yes Next step.
4 Check whether the vehicle speed sensor is working under a normal condition.
No
Change the vehicle speed
sensor.
Yes
Repair or change the wiring
harness.
5
Check whether the loop between the signal line of vehicle speed sensor and Pin
59 of ECU is a broken loop, or short circuit to power supply or ground.
No Diagnosis help.
Fault code P0506 The rotating-speed under an idle-speed control is lower than the desired
idle-speed value.
”
S.N. Operation steps
Check
result
Follow-up steps
1
Connect with a diagnosis instrument, and place the ignition switch to the
OFF
”
position.
Next step.
Yes Next step.
2
Check whether adjusting screws of throttle valve, pulling line of gas pedal, and
throttle valve are working under a good condition.
No
Perform necessary
maintenance and service.
Yes Next step.
3 Check whether the idle-speed adjustor is working under a good condition.
No
Perform necessary
maintenance and service.
Yes
Perform necessary
maintenance.
4
A
、
Check whether the pressure of fuel supply system is too low;
B
、
Check whether the fuel injector has been blocked
C
、
Check whether the inlet /exhaust gas within the system is free
So on and so forth.
No Diagnosis help.
Fault code
：
P0507 The rotating-speed under an idle-speed control is higher than the desired
idle-speed value.
”
S.N. Operation steps
Check
result
Follow-up steps
1
Connect with a diagnosis instrument, and place the ignition switch to the
OFF
”
position.
Next step.
Yes Next step.
2
Check whether adjusting screws of throttle valve, the pulling line of gas pedal,
and throttle valve are working under a good condition.
No
Perform necessary
maintenance and service.
Yes Next step.
3 Check whether the idle-speed adjustor is working under a good condition.
No
Perform necessary
maintenance and service.
Yes
Perform necessary
maintenance.
4
D
、
Check the fuel supply system for air leakage;
E
、
Check the fuel injector for fuel leakage;
F. Check whether the inlet /exhaust gas within the system is too high, so on
and so forth.
No Diagnosis help.
M7.9.7 system service &diagnosis flow process based on fault code
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