Mitsubishi Outlander (2003+). Manual — part 63
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-115
The volumetric efficiency is 30
-
60%.
The adaptive learning has been completed with
the vane that generates the crankshaft position
signals.
During the engine operation except the shift
change or low speed driving and rapid accelera-
tion and deceleration, also intermittent operation
of air compressor (A/C: within the 3 seconds after
changing to ON from OFF or to OFF from ON).
The throttle deviation is within the range of
-
0.059 V/10ms to 0.059 V/10ms.
Judgment Criterion
The number of misfiring (in the catalyst tempera-
ture of above 950
C) is beyond the specified
number (of 7.3 % on more than the two cylinders)
with the engine speed of 200 r/min.
Or
The number of misfiring (that is 1.5 times the
emission standard limit) is beyond the specified
number (of 2 % on more than the two cylinders)
with the engine speed of 1,000 r/min.
PROBABLE CAUSE
Ignition system related part(s) failed
Low compression pressure
Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1.Check ignition coil spark.
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Check ignition circuit system (Refer to
Inspection procedure 29
NO :
Repair.
STEP 3.Check No.3 injector itself.
Check Injector itself (Refer to
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Replace No.3 injector.
STEP 4.Connector check: B-17X engine control
relay connector, B-134 engine-ECU connector
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Repair.
AK300265
M
1
2
Harness side connector
Connector: B-04
AE
B-04 (GR)
AK300255
2
1
3
4
Relay box’s
triangle marks
AB
CONNECTOR: B-17X
B-17X
Harness side
connector
AK300257
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
13 12
23
24
25
26
21
3
10
11
AB
CONNECTOR: C-134
C-134
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-116
STEP 5.Check harness between B-17X (terminal
No. 1) engine control relay connector and B-04
(terminal No. 1) No.3 injector connector.
Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair.
STEP 6. Check harness between B-04 (terminal
No. 2) No.3 injector connector and C-134
(terminal No. 2) engine-ECU connector
Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair.
STEP 7. Measure fuel pressure.
Measure fuel pressure (Refer to fuel pressure
test
)
Q: Is the check result normal?
YES :
Replace engine-ECU.
NO :
Repair.
Code No. P0304: No. 4 cylinder mis-fire detection system
OPERATION
Refer to P0204 injector circuit
FUNCTION
If a misfire occurs while the engine is running, the
engine speed changes for an instant.
The engine-ECU checks for such changes in
engine speed.
TROUBLE JUDGMENT
Check Conditions
5 seconds later after the engine has started up.
The engine speed is 500
-
4,500 r/min.
The engine coolant temperature is
-
10
C or
higher.
The intake air temperature is
-
10
C or higher.
The barometric pressure is 72 kPa or more.
AK300255
2
1
3
4
Relay box’s
triangle marks
AB
CONNECTOR: B-17X
B-17X
Harness side
connector
AK300265
M
1
2
Harness side connector
Connector: B-04
AE
B-04 (GR)
AK300265
M
1
2
Harness side connector
Connector: B-04
AE
B-04 (GR)
AK300257
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
13 12
23
24
25
26
21
3
10
11
AB
CONNECTOR: C-134
C-134
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-117
The volumetric efficiency is 30
-
60%.
The adaptive learning has been completed with
the vane that generates the crankshaft position
signals.
During the engine operation except the shift
change or low speed driving and rapid accelera-
tion and deceleration, also intermittent operation
of air compressor (A/C: within the 3 seconds after
changing to ON from OFF or to OFF from ON).
The throttle deviation is within the range of
-
0.059 V/10ms to 0.059 V/10ms.
Judgment Criterion
The number of misfiring (in the catalyst tempera-
ture of above 950
C) is beyond the specified
number (of 7.3 % on more than the two cylinders)
with the engine speed of 200 r/min.
Or
The number of misfiring (that is 1.5 times the
emission standard limit) is beyond the specified
number (of 2 % on more than the two cylinders)
with the engine speed of 1,000 r/min.
PROBABLE CAUSE
Ignition system related part(s) failed
Low compression pressure
Failed engine-ECU
DIAGNOSIS PROCEDURE
STEP 1.Check the ignition coil spark.
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Check ignition Circuit System (Refer to
Inspection procedure 29
NO :
Repair.
STEP 3.Check No.4 injector itself.
Check Injector itself (Refer to
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Replace No.4 injector.
STEP 4.Connector check: B-17X engine control
relay connector and B-134 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Repair.
AK300265
M
1
2
Harness side connector
Connector: B-05
AF
B-05 (GR)
AK300255
2
1
3
4
Relay box’s
triangle marks
AB
CONNECTOR: B-17X
B-17X
Harness side
connector
AK300257
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
13 12
23
24
25
26
21
3
10
11
AB
CONNECTOR: C-134
C-134
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-118
STEP 5.Check harness between B-17X (terminal
No. 1) engine control relay connector and B-05
(terminal No. 1) No.4 injector connector.
Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Repair.
STEP 6. Check harness between B-05 (terminal
No. 2) No.4 injector connector and C-134
(terminal No. 15) engine-ECU connector.
Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 7 .
NO :
Repair.
STEP 7. Measure fuel pressure.
Measure fuel pressure (Refer to fuel pressure
test
)
Q: Is the check result normal?
YES :
Replace engine-ECU.
NO :
Repair.
AK300255
2
1
3
4
Relay box’s
triangle marks
AB
CONNECTOR: B-17X
B-17X
Harness side
connector
AK300265
M
1
2
Harness side connector
Connector: B-05
AF
B-05 (GR)
AK300265
M
1
2
Harness side connector
Connector: B-05
AF
B-05 (GR)
AK300257
1
14
4
19
5
22
6
17
8
15
9
18
7
20
16
2
13 12
23
24
25
26
21
3
10
11
AB
CONNECTOR: C-134
C-134
Harness side connector
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст