Mitsubishi Outlander (2003+). Manual — part 569
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-91
STEP 4. Measure the resistance at C-26 A/C-ECU
connector.
(1) Remove the relay, and measure at the junction
block side.
(2) Continuity between terminal 27 and body earth.
OK: 2 ohm or less
Q: Is the check result normal?
YES :
Go to Step 7.
NO :
Go to Step 5.
STEP 5. Connector check: C-26 A/C-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 6.
NO :
Repair the connector.
AC308718
Connector: C-26
AT
C-26(B)
Harness side
<LHD>
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC308735
Connector: C-26
BA
C-26(B)
Harness side
<RHD>
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC301541CL
Connector C-26
(Harness side)
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC308718
Connector: C-26
AT
C-26(B)
Harness side
<LHD>
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC308735
Connector: C-26
BA
C-26(B)
Harness side
<RHD>
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-92
STEP 6. Check the wiring harness between C-26
A/C-ECU connector terminal No.27 and the earth.
•
Check the A/C-ECU earth line for open or short
circuit.
Q: Is the check result normal?
YES :
Replace the automatic air conditioner
control panel (A/C-ECU).
NO :
Repair the wiring harness.
STEP 7. Measure the voltage at C-27 A/C-ECU
connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Measure the voltage between terminal 3 and
earth.
OK: System voltage
Q: Is the check result normal?
YES :
Replace the automatic air conditioner
control panel (A/C-ECU).
NO :
Go to Step 8.
AC308718
Connector: C-26
AT
C-26(B)
Harness side
<LHD>
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC308735
Connector: C-26
BA
C-26(B)
Harness side
<RHD>
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC308718
Connector: C-27
AU
C-27(B)
<LHD>
8
2
10 9
1
5
3
4
6
7
20191817161514131211
Harness side
AC308735
Connector: C-27
BB
C-27(B)
Harness side
<RHD>
8
2
10 9
1
5
3
4
6
7
20191817161514131211
AC301541CM
Connector C-27
(Harness side)
8
2
10 9
1
5
3
4
6
7
20191817161514131211
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-93
STEP 8. Connector check: C-27 A/C-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 9.
NO :
Repair the connector.
STEP 9. Check the wiring harness between C-27
A/C-ECU connector terminal No.3 and relay box
fuse No.22.
AC308718
Connector: C-27
AU
C-27(B)
<LHD>
8
2
10 9
1
5
3
4
6
7
20191817161514131211
Harness side
AC308735
Connector: C-27
BB
C-27(B)
Harness side
<RHD>
8
2
10 9
1
5
3
4
6
7
20191817161514131211
AC308718
Connector: C-27
AU
C-27(B)
<LHD>
8
2
10 9
1
5
3
4
6
7
20191817161514131211
Harness side
AC308735
Connector: C-27
BB
C-27(B)
Harness side
<RHD>
8
2
10 9
1
5
3
4
6
7
20191817161514131211
AC208434AD
Fuse: No.22
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-94
NOTE:
Prior to the wiring harness inspection, check junction
block connectors C-202, C-204, intermediate
connectors C-116 <LHD>, A-14 <RHD>, C-122
<RHD> and joint connector C-02, and repair if
necessary.
•
Check the A/C-ECU power supply (battery
back-up) line for open or short circuit.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
AC308717
Connectors: C-02, C-116
AU
C-116
Harness side
Harness side
C-02
C-116
C-02
<LHD>
33
22
11
28
17
16
15
14
13
12
25
2324
2627
3
1 2
4 5
21
20
19
18
2930
32
31
7
6
8
10
9
9
21
33
35
24
12
3 4
7
8
5 6
39
28
41
30
18
4243
31
1920
32
40
29
1617
38
27
15
37
36
26
14
13
25
2
1
34
23
11
10
22
AC308769
BC
C-02
Connector: C-02
<RHD>
33
22
11
28
17
16
15
14
13
12
25
2324
2627
3
1 2
4 5
21
20
19
18
2930
32
31
7
6
8
10
9
AC308735
Connector: C-116
BD
C-116
<RHD>
9
21
33
35
24
12
3 4
7
8
5 6
39
28
41
30
18
4243
31
1920
32
40
29
1617
38
27
15
37
36
26
14
13
25
2
1
34
23
11
10
22
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