Mitsubishi Outlander (2003+). Manual — part 98
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-255
STEP 16. Check harness between A-10X
(terminal No. 4) fan control relay connector and
battery.
Check power supply line for damage.
Q: Is the check result normal?
YES :
Go to Step 17 .
NO :
Repair.
STEP 17. Check harness between A-10X
(terminal No. 2) fan control relay connector and
A-20 (terminal No. 3) fan controller connector.
Check output line for damage.
Q: Is the check result normal?
YES :
Replace fan motor and fan controller.
NO :
Repair.
STEP 18. Check harness between A-20 (terminal
No. 2) fan controller connector and C-134
(terminal No. 21) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connector A-14, and repair if necessary.
Check output line for short circuit.
Q: Is the check result normal?
YES :
Replace fan motor and fan controller.
NO :
Repair.
AK300324
3
1
2
4
AB
CONNECTOR: A-10X
A-10X
Harness side
connector
AK300324
3
1
2
4
AB
CONNECTOR: A-10X
A-10X
Harness side
connector
AK203423
1
2
3
Harness side
connector
A-20 (GR)
AC
Connector: A-20
AK203423
1
2
3
Harness side
connector
A-20 (GR)
AC
Connector: A-20
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-256
Inspection Procedure 26: A/C Switch System
OPERATION
The battery voltage is applied to the engine-ECU
(terminal No. 45) from the A/C-ECU (terminal No.
4) <Manual A/C> or A/C-ECU (terminal No. 34)
<Auto A/C>.
FUNCTION
When the A/C switch is in "ON" position, A/C
switch ON signal is inputted to the engine-ECU
from the A/C-ECU. In response to the signal, the
engine-ECU controls the A/C compressor relay.
PROBABLE CAUSE
Failed A/C
Failed A/C system
Open/short circuit in A/C circuit or loose connec-
tor contact
Failed engine-ECU
AK300325
1
9
2
10
3
11
4
12
5
13
6
14
7
15
8
16
34
33
32
36
35
37
42
45
31
39
38
46
40 41
43 44
4 <Manual A/C>
34 <Auto A/C>
45
7
C-104
Engine-ECU
A/C-ECU
A/C Switch circuit
AB
G-B
G-B
C-135
C-06
Wire colour code
B: Black LG: Light green G: Green L: Blue W: White Y: Yellow SB: Sky blue BR: Brown O: Orange GR: Gray
R: Red P: Pink V:Violet
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-257
DIAGNOSIS PROCEDURE
STEP 1. Measure voltage at C-135 engine-ECU
connector.
Measure engine-ECU terminal voltage.
Engine: Running at idle
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
Voltage between terminal No. 45 and earth.
OK:
System voltage (when A/C is ON)
0.5 V or less (when A/C is OFF)
Q: Is the check result normal?
YES :
Go to Step 6 .
NO :
Go to Step 2 .
STEP 2. Measure voltage at C-06 A/C-ECU
connector <Manual A/C> or C-26 A/C-ECU
connector <Auto A/C>.
Measure engine-ECU terminal voltage.
Engine: Idling
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
Voltage between terminal No. 4 and earth <Man-
ual A/C>
Voltage between terminal No. 34 and earth <Auto
A/C>
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 5 .
NO :
Go to Step 3 .
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
AK300326
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
Harness side
connector
C-06 (B)
AB
Connector: C-06
<Manual A/C>
AK300327
28
36
27
35
26
34
25
33
24
32
23
31
22
30
21
29
Harness side
connector
C-26 (B)
AB
Connector: C-26
<Auto A/C>
TROUBLESHOOTING
MULTIPORT FUEL INJECTION (MFI)
13A-258
STEP 3. Connector check: C-06 A/C-ECU
connector <Manual A/C> or C-26 A/C-ECU
connector <Auto A/C> C-135 engine-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 4 .
NO :
Repair.
STEP 4. Check harness between C-06 A/C-ECU
connector <Manual A/C> or C-26 A/C-ECU
connector <Auto A/C> and C-135 (terminal No.
45) engine-ECU connector.
NOTE: Before checking harness, check intermediate
connector C-104, and repair if necessary.
Check output line for short circuit.
Q: Is the check result normal?
YES :
Check A/C system (Refer to GROUP 55A
-
Troubleshooting
).
NO :
Repair.
AK300326
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
Harness side
connector
C-06 (B)
AB
Connector: C-06
<Manual A/C>
AK300327
28
36
27
35
26
34
25
33
24
32
23
31
22
30
21
29
Harness side
connector
C-26 (B)
AB
Connector: C-26
<Auto A/C>
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
AK300326
8
16
7
15
6
14
5
13
4
12
3
11
2
10
1
9
Harness side
connector
C-06 (B)
AB
Connector: C-06
<Manual A/C>
AK300327
28
36
27
35
26
34
25
33
24
32
23
31
22
30
21
29
Harness side
connector
C-26 (B)
AB
Connector: C-26
<Auto A/C>
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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