Mitsubishi Outlander GS45X. Manual — part 959
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-769
STEP 4. Using scan tool MB991958, check actuator test.
(1) Turn the ignition switch to the "ON" position.
(2) Check the following items in the actuator test. Refer to
Actuator Test Reference Table
.
a. Item 9: Fuel Pump.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the actuator operating properly?
YES : Go to Step 5.
NO : Repair or Replace. Then confirm that the malfunction
symptom is eliminated.
STEP 5. Check the ignition timing.
(1) Check the ignition timing at cranking.
Standard value: 5
° BTDC ± 3°
Q: Is the ignition timing normal?
YES : Go to Step 6.
NO : Check for installed conditions of the timing belt. Then
confirm that the malfunction symptom is eliminated.
STEP 6. Check the fuel pressure.
Refer to On-vehicle Service
− Fuel Pressure Test
Q: Is the fuel pressure normal?
YES : Go to Step 7.
NO : Check the following items, and repair or replace the
defective items.
• Insufficient fuel pump discharge.
• Fuel pump filter clogged.
STEP 7. Check the left bank injector resistance.
(1) Disconnect the left bank injector connector B-115, B-116,
B-120.
(2) Measure the resistance between each injector side
connector terminal No. 1 and No. 2.
Standard value: 10.5
− 13.5 Ω [at 20°C (68°F)]
Q: Is the measured resistance between 10.5 and 13.5 ohms
[at 20
°C (68°F)]?
YES : Go to Step 8.
NO : Replace the faulty injector. Then confirm that the
malfunction symptom is eliminated.
AK700204
1 2
AB
Injector side
connector
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-770
STEP 8. Check the right bank injector resistance at
intermediate connector B-21.
(1) Disconnect the intermediate connector B-21.
(2) Measure the resistance between each male connector side
terminal.
a. Measure the resistance between terminal No. 6 and No.
7 at No. 1 cylinder injector.
b. Measure the resistance between terminal No. 6 and No.
8 at No. 3 cylinder injector.
c. Measure the resistance between terminal No. 6 and No.
9 at No. 5 cylinder injector.
• Resistance should be between 10.5 and 13.5 ohms [at
20
°C (68°F)].
Q: Is the measured resistance between 10.5 and 13.5 ohms
[at 20
°C (68°F)]?
YES : Go to Step 11.
NO : Go to Step 9.
STEP 9. Check the right bank injector resistance.
(1) Remove the intake manifold.
(2) Disconnect the right bank injector connector, which
deviates from the standard value at Step 8.
(3) Measure the resistance between injector side connector
terminal No. 1 and No. 2.
Standard value: 10.5
− 13.5 Ω [at 20°C (68°F)]
Q: Is the measured resistance between 10.5 and 13.5 ohms
[at 20
°C (68°F)]?
YES : Go to Step 10.
NO : Replace the injector. Then confirm that the
malfunction symptom is eliminated.
STEP 10. Check harness connector B-101, B-103, B-104 at
right bank injector for damage.
(1) Check the injector connector, which deviated from the
standard value listed in Step 8.
Q: Is the harness connector in good condition?
YES : Repair harness wire between injector intermediate
connector and right bank injector connector because
of harness damage. Then confirm that the
malfunction symptom is eliminated.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
AK700205
1
2 3
6
7 8
4 5
9 10
AB
B-21
Injector side
connector
AK700204
1 2
AB
Injector side
connector
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-771
STEP 11. Check harness connector B-21 at the
intermediate connector for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 12.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
STEP 12. Check harness connector B-10 at ECM and
harness connector B-115, B-116, B-120 at the left bank
injector for damage.
Q: Is the harness connector in good condition?
YES : Go to Step 13.
NO : Repair or replace it. Refer to GROUP 00E, Harness
Connector Inspection
. Then confirm that the
malfunction symptom is eliminated.
STEP 13. Check for harness damage between injector
connector and ECM connector.
(1) Disconnect the injector connector and ECM connector.
(2) Measure the resistance between injector connector and
ECM connector.
a. Injector connector B-101 (terminal No. 2) and ECM con-
nector B-10 (terminal No. 2) at No. 1 cylinder injector.
b. Injector connector B-120 (terminal No. 2) and ECM con-
nector B-10 (terminal No. 3) at No. 2 cylinder injector.
c. Injector connector B-103 (terminal No. 2) and ECM con-
nector B-10 (terminal No. 18) at No. 3 cylinder injector.
d. Injector connector B-116 (terminal No. 2) and ECM con-
nector B-10 (terminal No. 19) at No. 4 cylinder injector.
e. Injector connector B-104 (terminal No. 2) and ECM con-
nector B-10 (terminal No. 50) at No. 5 cylinder injector.
f. Injector connector B-115 (terminal No. 2) and ECM con-
nector B-10 (terminal No. 51) at No. 6 cylinder injector.
Q: Is the measured resistance less than 2 ohms?
YES : Go to Step 14.
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
AK700206
M
1
2
16 15 14 13 12 11 10 9 8 7 6 5 4 3
2
1
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
B-101, B-103, B-104,
B-115, B-116,B-120
harness connector:
component side
AB
B-10 harness
connector:
component side
MULTIPORT FUEL INJECTION (MFI) DIAGNOSIS
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L ENGINE>
13B-772
STEP 14. Check the ignition system.
(1) Connect the timing light to terminal No. 3 of the ignition coil
connector B-01, B-04, B-05, B-15, B-18 or B-19 in order.
(2) Crank the engine.
• The timing light flashes.
(3) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Does the timing light flash?
YES : Go to Step 15.
NO : Refer to INSPECTION PROCEDURE 24
− Ignition
Circuit System
.
STEP 15. Check the spark plugs.
Refer to GROUP 16, Ignition System
− On-vehicle Service −
Spark Plug Check And Cleaning
.
Q: Are there any abnormalities?
YES : Replace the spark plug. Then confirm that the
malfunction symptom is eliminated.
NO : Go to Step 16.
STEP 16. Check the ignition coil.
(1) Remove the intake manifold.
(2) Refer to GROUP 16, Ignition System
− On-vehicle Service
− Ignition Coil Check
.
Q: Are there any abnormalities?
YES : Replace the ignition coil. Then confirm that the
malfunction symptom is eliminated.
NO : Go to Step 17.
STEP 17. Check the compression pressure.
Refer to GROUP 11C, On-vehicle Service
− Compression
Pressure Check
Q: Is the compression pressure normal?
YES : Check the following items, and repair or replace the
defective items.
a. Check if fuel is contaminated.
b. Check if the injectors are clogged.
Then confirm that the malfunction symptom is
eliminated.
NO : Repair it. Then confirm that the malfunction symptom
is eliminated.
Нет комментариевНе стесняйтесь поделиться с нами вашим ценным мнением.
Текст