Mitsubishi Outlander (2003+). Manual — part 558
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-47
STEP 10. Measure the voltage at B-18X A/C
compressor relay connector.
(1) Remove the relay, and measure at the relay block
side.
(2) Voltage between terminal 4 and body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 13.
NO :
Go to Step 11.
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.
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC301541BW
Connector B-18X
(Relay box side)
Front of
vehicle
1
3
2
4
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-48
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.
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.
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
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-49
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.
STEP 15. Connector check: C-139 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.
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
AC308718
Connector: C-139 <LHD>
AW
Harness side
C-139 (GR)
AC308735
Connector: C-139 <RHD>
BE
Harness side
C-139 (GR)
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
TROUBLESHOOTING
AUTOMATIC AIR CONDITIONER
55B-50
STEP 16. Check the wiring harness between
C-139 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.
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-139 and
earth terminal 8.
AC301483AG
Front of
vehicle
Relay box side
1
3
2
4
B-18X
-
Connector: B-18X
AC308718
Connector: C-139 <LHD>
AW
Harness side
C-139 (GR)
AC308735
Connector: C-139 <RHD>
BE
Harness side
C-139 (GR)
AC308719
Connectors: C-26, C-139 <LHD>
C-139
AO
Harness side
C-139 (GR)
C-26(B)
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
C-26
Harness side
AC308736
Connectors: C-26, C-139 <RHD>
C-139
C-26
AT
Harness side
C-139(GR)
C-26(B)
29
21
35
27
24
323130
22
23
33
25
34
26
36
28
Harness side
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