Mitsubishi Outlander (2003+). Manual — part 76
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-167
DIAGNOSIS PROCEDURE
STEP 1. Connector check: B-19 intermediate
connector
Q: Is the check result normal?
YES :
Go to Step 2 .
NO :
Repair.
STEP 2. Measure voltage at B-19 intermediate
connector.
Disconnect connector, and measure at male con-
nector side.
Ignition switch: ON
Voltage between terminal No. 1 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Go to Step 3 .
STEP 3. Connector check: C-135 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Repair.
STEP 4. Check harness between B-19 (terminal
No. 1) intermediate connector and C-135
(terminal No. 41) engine-ECU connector.
Check output line for short circuit.
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Repair.
AK300294
1
2
3
4
5
6
AB
CONNECTOR: B-19
B-19 (B)
Female side
connector
AK300295
1 2 3
4 5 6
AB
CONNECTOR: B-19
B-19 (B)
Male side
connector
AK300294
1
2
3
4
5
6
AB
CONNECTOR: B-19
B-19 (B)
Female side
connector
AK300295
1 2 3
4 5 6
AB
CONNECTOR: B-19
B-19 (B)
Male side
connector
AK300256
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
AB
CONNECTOR: C-135
C-135
Harness side connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-168
STEP 5. Check the trouble symptoms.
Q: Does trouble symptom persist?
YES :
Replace engine-ECU.
NO :
Intermittent malfunction (Refer to GROUP
00
-
How to Use
Troubleshooting/Inspection Service Points
STEP 6. Measure voltage at B-19 intermediate
connector.
Use special tool test harness (MB991658) to con-
nect connector, and measure at pick-up harness.
Ignition switch: ON
Voltage between terminal No. 1 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 9 .
NO :
Go to Step 7 .
STEP 7. Connector check: B-30 alternator
connector
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Repair.
STEP 8. Check harness between B-30 (terminal
No. 4) alternator connector and B-19 (terminal
No. 1) intermediate connector.
Check output line for short circuit.
Q: Is the check result normal?
YES :
Replace alternator.
NO :
Repair.
AK300294
1
2
3
4
5
6
AB
CONNECTOR: B-19
B-19 (B)
Female side
connector
AK300296
2
1
3
4
AB
Harness side
connector
CONNECTOR: B-30
B-30 (GR)
AK300296
2
1
3
4
AB
Harness side
connector
CONNECTOR: B-30
B-30 (GR)
AK300294
1
2
3
4
5
6
AB
CONNECTOR: B-19
B-19 (B)
Female side
connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-169
STEP 9. Measure voltage at B-19 intermediate
connector.
Use special tool test harness (MB991658) to con-
nect connector, and measure at pick-up harness.
Engine: Idle after warm-up
Transmission: Neutral
Radiator fan: Inactive
Voltage between terminal No. 1 and earth.
OK: Switching the headlamps to ON from
OFF causes the voltage to fall.
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Go to Step 10 .
STEP 10. Connector check: B-30 alternator
connector
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair.
STEP 11. Check harness between B-30 (terminal
No. 4) alternator connector and B-19 (terminal
No. 1) intermediate connector pin No. 1.
Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Repair.
AK300294
1
2
3
4
5
6
AB
CONNECTOR: B-19
B-19 (B)
Female side
connector
AK300296
2
1
3
4
AB
Harness side
connector
CONNECTOR: B-30
B-30 (GR)
AK300296
2
1
3
4
AB
Harness side
connector
CONNECTOR: B-30
B-30 (GR)
AK300294
1
2
3
4
5
6
AB
CONNECTOR: B-19
B-19 (B)
Female side
connector
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-170
STEP 12. Check harness between B-19 (terminal
No. 1) intermediate connector and C-135
(terminal No. 41) engine-ECU connector.
Check output line for damage.
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Repair.
STEP 13. Check trouble symptom.
Q: Same symptoms regenerated?
YES :
Replace alternator.
NO :
Intermittent malfunction (Refer to Group 00
-
How to Use troubleshooting/Inspection
Service Points
AK300295
1 2 3
4 5 6
AB
CONNECTOR: B-19
B-19 (B)
Male side
connector
AK300256
34 33 32
36 35
37
42
45
31
39
38
46
40
41
43
44
AB
CONNECTOR: C-135
C-135
Harness side connector
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