JAC J2, Руководство по обслуживанию

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Maintenance Manual for J2 Sedan
Electronic Control System
of Engine
215
Fault code: P0202 “the control circuit of fuel injector of Cylinder 2# is open”
S/N Step Check result Subsequent step
1
Connect the diagnosis device and adapter, and turn the ignition switch
to ON position.
Next step
Yes To Step 4
2
Unplug the connector of the fuel injector of Cylinder 2# on the
harness, and check if the voltage between Pin 1# of this connector
and the negative pole of power source is about 12V by the
multimeter.
No Next step
Yes
Repair or replace
the harness
3
Check if the circuit between Pin 1# of the fuel injector connector of
Cylinder 2# and the main relay is open or short to ground.
No Next step
Yes Next step
4
Check if the resistance between Pins 1# and 2# of the fuel injector of
Cylinder 2# at 20
is between 11 Ω and 13 Ω by the multimeter.
℃
No
Replace the fuel
injector
Yes Diagnosis help
5
Check if the voltage between Pin 2# of the fuel injector of Cylinder
2# and the negative pole of power source is about 3.7V by the
multimeter.
No Next step
Yes
Repair or replace
the harness
6
Check if the circuit between Pin 2# of the fuel injector connector of
Cylinder 2# and Pin 63 of ECU is open or short to power source or
ground.
No Diagnosis help
Fault code: P0203 “the control circuit of fuel injector of Cylinder 3# is open”
S/N Step Check result Subsequent step
1
Connect the diagnosis device and adapter, and turn the ignition switch
to ON position.
Next step
Yes To Step 4
2
Unplug the connector of the fuel injector of Cylinder 3# on the
harness, and check if the voltage between Pin 1# of this connector
and the negative pole of power source is about 12V by the
multimeter.
No Next step
Yes
Repair or replace
the harness
3
Check if the circuit between Pin 1# of the fuel injector connector of
Cylinder 3# and the main relay is open or short to ground.
No Next step
Yes Next step
4
Check if the resistance between Pins 1# and 2# of the fuel injector of
Cylinder 3# at 20
is between 11 Ω and 13 Ω by the mul
℃
timeter.
No
Replace the fuel
injector
Yes Diagnosis help
5
Check if the voltage between Pin 2# of the fuel injector of Cylinder
3# and the negative pole of power source is about 3.7V by the
multimeter.
No Next step
Yes
Repair or replace
the harness
6
Check if the circuit between Pin 2# of the fuel injector connector of
Cylinder 3# and Pin 49 of ECU is open or short to power source or
ground.
No Diagnosis help