Mitsubishi MOTORS Lancer 2004, Workshop Manual

Page: 550 / 638

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION 55-16
STEP 14. Check the wiring harness between A-31
dual pressure switch connector terminal No.1
and C-139 A/C-ECU connector terminal No.4.
NOTE:
Prior to the wiring harness inspection, check
intermediate connector C-114, and repair if
necessary.
•
Check the dual pressure switch output line for
open or short circuit.
Q: Is the check result normal?
YES :
Go to Step 15.
NO :
Repair the wiring harness.
STEP 15. Connector check: C-125 engine-ECU
connector <M/T> or C-126 engine-A/T-ECU
connector <A/T>
Q: Is the check result normal?
YES :
Go to Step 16.
NO :
Repair the connector.
AC303839
Connector: A-31
<L.H.D.>
AH
Harness side
A-31 (BR)
AC303802
Connector: C-139
<L.H.D.>
AE
C-139 (B)
Harness side
AC303804
Connector: C-114
<LHD>
AN
18
3
16 15 14
1 2
17
4 5 8
20 19
6 7
21 22
9 10
25
13
24 23
12 11
AC303805
Connectors: C-125 <M/T>, C-126 <A/T>
AG
<L.H.D.>
C-126 (GR)
C-125
Harness side
C-125 (Y)
C-126
38
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90 98 97 9695 949392 91