Mitsubishi Outlander (2003+). Manual — part 100
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-263
STEP 7. Measure voltage at B-27 A/C compressor
connector.
Disconnect connector, and measure at harness
side.
Remove B-18X (terminal No. 1 and No. 4) A/C
compressor relay and short-circuit of harness
side connector.
Ignition switch: ON
Voltage between terminal No. 1 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 8 .
NO :
Check and repair harness between B-27
(terminal No. 1) A/C compressor connector
and B-18X (terminal No. 1) A/C compressor
relay connector.
Check output line for open/short
circuit.
STEP 8. Measure voltage at C-134 engine-ECU
connector.
Measure engine-ECU terminal voltage.
Ignition switch: ON
Voltage between terminal No. 8 and earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 12 .
NO :
Go to Step 9 .
STEP 9. Connector check: C-134 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 10 .
NO :
Repair.
AK300330
1
AB
CONNECTOR: B-27
B-27 (B)
Harness side
connector
AK300329
2
1
3
4
AB
CONNECTOR: B-18X
B-18X
Harness side
connector
Relay box’s
triangle marks
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
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-264
STEP 10. Check harness between B-18X
(terminal No. 2) A/C compressor relay connector
and C-134 (terminal No. 8) engine-ECU
connector.
Check earthing line for open circuit and damage.
Q: Is the check result normal?
YES :
Go to Step 11 .
NO :
Repair.
STEP 11. MUT-II Data List
Item 49: A/C relay
a. Engine: Idling
b. A/C set temperature:
Maximum Cool when temperature in cabin is
25
C or more
Maximum Hot when temperature in cabin is
25
C or less
OK:
ON (when A/C is ON)
OFF (when A/C is OFF)
Q: Is the check result normal?
YES :
Intermittent malfunction (Refer to GROUP
00
-
How to Use
Troubleshooting/Inspection Service Points
).
NO :
Replace engine-ECU.
STEP 12. Connector check: C-134 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 13 .
NO :
Repair.
AK300329
2
1
3
4
AB
CONNECTOR: B-18X
B-18X
Harness side
connector
Relay box’s
triangle marks
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
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-265
STEP 13. Check harness between B-18X
(terminal No. 2) A/C compressor relay connector
and C-134 (terminal No. 8) engine-ECU
connector.
Check earthing line for damage.
Q: Is the check result normal?
YES :
Go to Step 14 .
NO :
Repair.
STEP 14. Connector check: C-303 ignition switch
connector
Q: Is the check result normal?
YES :
Go to Step 15 .
NO :
Repair.
STEP 15. Check harness between C-303 (terminal
No. 4) ignition switch connector and B-18X
(terminal No. 3) A/C compressor relay connector.
NOTE: Before checking harness, check intermediate
connectors C-106, C-202 <Auto A/C>, C-203 and C-
205 <Manual A/C>, and repair if necessary.
Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 16 .
NO :
Repair.
STEP 16. Check harness between battery and B-
18X (terminal No. 4) A/C compressor relay
connector.
NOTE: Before checking harness, check intermediate
connector A-14, and repair if necessary.
Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 17 .
NO :
Repair.
AK300329
2
1
3
4
AB
CONNECTOR: B-18X
B-18X
Harness side
connector
Relay box’s
triangle marks
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
1
2
3
4
5
6
AK300304
CONNECTOR: C-303
C-303
Harness side
connector
AB
1
2
3
4
5
6
AK300304
CONNECTOR: C-303
C-303
Harness side
connector
AB
AK300329
2
1
3
4
AB
CONNECTOR: B-18X
B-18X
Harness side
connector
Relay box’s
triangle marks
AK300329
2
1
3
4
AB
CONNECTOR: B-18X
B-18X
Harness side
connector
Relay box’s
triangle marks
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-266
STEP 17. Check harness between B-18X
(terminal No. 1) A/C compressor relay connector
and B-27 (terminal No. 1) A/C compressor relay
connector.
Check output line for damage.
Q: Is the check result normal?
YES :
Replace A/C compressor magnet clutch.
NO :
Repair.
AK300329
2
1
3
4
AB
CONNECTOR: B-18X
B-18X
Harness side
connector
Relay box’s
triangle marks
AK300330
1
AB
CONNECTOR: B-27
B-27 (B)
Harness side
connector
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