MPI <4G9> -
Troubleshooting
13A-109
Code No. P0170 Abnormal fuel system
Probable cause
Range of Check
D
Engine: Being learning the air-fuel ratio
Set Conditions
D
Ten seconds or more have been passed while the fuel injection amount
compensation value is too low.
or
D
Ten seconds or more have been passed while the fuel injection amount
compensation value is too high.
D
Incorrect fuel pressure
D
Malfunction of fuel supply system
D
Malfunction of oxygen sensor (front)
D
Malfunction of intake air temperature sensor
D
Malfunction of barometric pressure sensor
D
Malfunction of air flow sensor
D
Malfunction of engine-ECU <M/T>
D
Malfunction of engine-A/T-ECU <A/T>
Replace the engine-ECU
<M/T> or engine-A/T-ECU
<A/T>.
OK
Replace the volume air
flow sensor.
Yes
Replace the engine-ECU
<M/T> or engine-A/T-ECU
<A/T>.
OK
Yes
Replace the volume air
flow sensor.
No
D
Check for clogging of
the injector.
D
Check for clogging of
the fuel filter and fuel
line.
D
Check the fuel pump
(insufficient discharge
rate.)
D
Check for exhaust
leaks (oxygen sensor
installation
section,
cracks
in
exhaust
manifold, cracks in
front pipe, etc.).
D
Check for entry of
foreign matter (water,
kerosene, etc.) into the
fuel.
MUT-
II
Data list
12 Volume air flow sensor
(Refer to P.13A-153.)
D
Does the tester indi-
cate less than the
standard value?
OK
No
Less than zero
MUT-
II
Data list
12 Volume air flow sensor
(Refer to P.13A-153.)
D
Does the tester indi-
cate more than the
standard value?
NG
Repair
OK
MUT-
II
Data list
81 Long-term fuel compensation (Refer to P.13A-156.)
D
Is fuel trim more or less than zero?
More than
zero
Check if air was drawn into
the intake system.
OK
Check the fuel pressure (Refer to P.13A-78*.)
OK
Check the harness wire between the engine-ECU <M/T> or
engine-A/T-ECU <A/T> and the injector connector.
NG
Repair
OK
Check the following connectors:
A-74, A-75, A-76, A-80, B-37 <M/T>, B-95 <A/T>
NG
Repair
OK
Check the injector (Refer to P.13A-86*.)
NG
Replace
OK
MUT-
II
Data list
25 Barometric pressure sensor (Refer to P.13A-155.)
NG
Check the barometric pressure sensor system. (Refer to P.13A-94,
INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE
CODE P0105.)
OK
MUT-
II
Data list
13 Intake air temperature sensor (Refer to P.13A-153.)
NG
Check the intake air temperature sensor system. (Refer to P.13A-96,
INSPECTION PROCEDURE FOR DIAGNOSTIC TROUBLE
CODE P0110.)
MUT-
II
Data list
21 Engine coolant temperature sensor (Refer to P.13A-154.)
NG
Check the engine coolant temperature sensor system. (Refer to
P.13A-98, INSPECTION PROCEDURE FOR DIAGNOSTIC
TROUBLE CODE P0115.)
D
Check for fuel leaks
from injector.
D
Check for entry of
foreign matter (water,
kerosene, etc.) into the
fuel.
NOTE
*: Refer to the ’96 COLT/LANCER Workshop Manual (Pub. No. PWME9511).
Содержание Colt 2000
Страница 7: ...11A 1 ENGINE CONTENTS ENGINE 4G1 11A ENGINE 4G9 11B ...
Страница 30: ...NOTES ...
Страница 221: ...23 1 AUTOMATIC TRANSMISSION CONTENTS GENERAL 2 Outline of Changes 2 TROUBLESHOOTING 2 ...