Mitsubishi Outlander (2003+). Manual — part 555
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-35
STEP 11. Connector check: B-18X A/C
compressor relay connector
Q: Is the check result normal?
YES :
Go to Step 12.
NO :
Repair the connector.
STEP 12. Check the wiring harness between
B-18X A/C compressor relay connector terminal
No.4 and the battery.
NOTE:
Prior to the wiring harness inspection, check
intermediate connector A-14, and repair if necessary.
•
Check the A/C compressor relay power supply
line for open circuit.
Q: Is the check result normal?
YES :
Check that the air conditioner works
normally.
NO :
Repair the wiring harness. Check that the
air conditioner works normally.
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301653
9
8
12 13
1
2
14
3
4
10
15
16
5
6
11
17
7
Connector: A-14
A-14(GR)
AB
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-36
STEP 13. Connector check: B-18X A/C
compressor relay connector and B-27 A/C
compressor connector
Q: Is the check result normal?
YES :
Go to Step 14.
NO :
Repair the connector.
STEP 14. Check the wiring harness between
B-18X A/C compressor relay connector terminal
No.1 and B-27 A/C compressor connector
terminal No.1.
•
Check the A/C compressor relay power supply
line for open circuit.
Q: Is the check result normal?
YES :
Go to Step 15.
NO :
Repair the wiring harness.
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301648
Connector: B-27
Harness side
1
B-27(B)
AB
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301648
Connector: B-27
Harness side
1
B-27(B)
AB
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-37
STEP 15. Connector check: C-134 engine-ECU
connector and B-18X A/C compressor relay
connector
•
Check the A/C compressor relay earth line for
open circuit.
Q: Is the check result normal?
YES :
Go to Step 16.
NO :
Repair the connector.
STEP 16. Check the wiring harness between
C-134 engine-ECU connector terminal No.8 and
B-18X A/C compressor relay connector terminal
No.2.
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.
AC301397
Connector: C-134
AO
Harness side
22
9
14
15
2 1
3
16
1918
5 4
17
6
21
7
20
8
25
12
10
23
11
24
26
13
JAE-E
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301397
Connector: C-134
AO
Harness side
22
9
14
15
2 1
3
16
1918
5 4
17
6
21
7
20
8
25
12
10
23
11
24
26
13
JAE-E
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-38
STEP 17. Measure the voltage at C-26 A/C-ECU
connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Disconnect engine-ECU connector C-134 and
earth terminal 8.
(4) Continuity between terminal 33 and body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 20.
NO :
Go to Step 18.
STEP 18. Connector check: B-18X A/C
compressor relay connector and C-26 A/C-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 19.
NO :
Repair the connector.
AC301398
Connectors: C-26, C-134
C-134
BA
Harness side
22
9
14
15
2 1
3
16
1918
5 4
17
6
21
7
20
8
25
12
10
23
11
24
26
13
JAE-E
C-134
C-26(B)
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
C-26
AC301541CP
Connector C-26
(Harness side)
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301397
Connector: C-26
<LHD>
AY
Harness side
C-26(B)
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
AC308735
Connector: C-26 <RHD>
AZ
Harness side
C-26(B)
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
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