Mitsubishi Outlander (2003+). Manual — part 530
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-15
STEP 10. Connector check: B-18X A/C
compressor relay connector
Q: Is the check result normal?
YES :
Go to Step 11.
NO :
Repair the connector.
STEP 11. 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 interme-
diate 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 :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction
NO :
Repair the wiring harness.
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC308679 AG
A-14(GR)
Connector: A-14 <LHD>
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-16
STEP 12. 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 13.
NO :
Repair the connector.
STEP 13. 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 power supply line for
open circuit.
Q: Is the check result normal?
YES <2000> :
Go to Step 14.
YES <2400> :
Go to Step 16.
NO :
Repair the wiring harness.
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC308688
Connector: B-27 <2000>
Harness side
1
B-27(B)
AB
AC308706
Connector: B-27
<2400-LHD>
Harness side
1
B-27(B)
AB
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC308688
Connector: B-27 <2000>
Harness side
1
B-27(B)
AB
AC308706
Connector: B-27
<2400-LHD>
Harness side
1
B-27(B)
AB
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-17
STEP 14. Connector check: C-134 engine-ECU
connector and B-18X A/C compressor relay
connector
Q: Is the check result normal?
YES :
Go to Step 15.
NO :
Repair the connector.
STEP 15. Check the wiring harness between
C-134 engine-ECU connector terminal No.8 and
B-18X A/C compressor relay connector terminal
No.2.
•
Check the A/C compressor relay earth 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.
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC309474AB
Connector: C-134 <2000>
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
AC309474AB
Connector: C-134 <2000>
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
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION
55A-18
STEP 16. Connector check: C-139 engine-ECU or
engine-A/T-ECU connector and B-18X A/C
compressor relay connector
Q: Is the check result normal?
YES :
Go to Step 17.
NO :
Repair the connector.
STEP 17. Check the wiring harness between
C-139 engine-ECU or engine-A/T-ECU connector
terminal No.8 and B-18X A/C compressor relay
connector terminal No.2.
•
Check the A/C compressor relay earth 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.
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC309486
Connector: C-139 <2400-LHD>
AC
Harness side
C-139 (GR)
AC309486
Connector: C-139 <2400-LHD>
AC
Harness side
C-139 (GR)
AC309476AB
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
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