2005 MITSUBISHI LANCER ignition switch

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-6
INSPECTION PROCEDURE 2: Inside/Outside Air Selection is not possible.
COMMENTS ON TROUBLE SYMPTOM
If the inside/outside air selection damper motor does
not operate normally, the inside/outside air selection
damper motor system may be defective.
TROUBLESHOOTING HINTS
•Malfunction of the inside/outside air selection
damper motor
•Damaged the wiring harness or connectors
•Malfunction of the manual air conditioner control
panel (A/C-ECU)
IGNITION
SWITCH (IG2)
OUTSIDE/INSIDE
AIR SELECTION
DAMPER CONTROL MOTOR
A/C-ECU
HEATER CONTROL PANEL
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet

Outside/Inside Air Selection Damper Control Motor Circuit

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-7
DIAGNOSIS
STEP 1. Check the defogger and A/C operations.
Q: Do the defogger and A/C work normally?
YES :
Go to Step 2.
NO : Refer to Inspection procedure 9
"Malfunction of the A/C-ECU power supply
system P.55-53 ."
NO : Refer to Inspection procedure 10
"Malfunction of the A/C-ECU power supply
system P.55-56 ."
STEP 2. Connector check: C-107 outside/inside
air selection damper control motor connector
Q: Is the check result normal?
YES :
Go to Step 3.
NO : Repair the connector.
STEP 3. Voltage measurement at the C-107
outside/inside air selection damper control motor
connector.
(1) Disconnect the connector, and measure at the
wiring harness side.
(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 7 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 5.
NO : Go to Step 4.
AC303804
Connector: C-107

AD
Harness side
AC303816
Connector: C-107
AI

Harness side
AC303804
Connector: C-107

AD
Harness side
AC303816
Connector: C-107
AI

Harness side
AC301541
6 2
7
3
5
4
1
EF
Connector C-107
(Harness side)

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-8
STEP 4. Check the wiring harness between C-107
outside/inside air selection damper control motor
connector terminal No.7 and the ignition switch
(IG2).
NOTE:
AC303804
Connector: C-107

AD
Harness side
AC303816
Connector: C-107
AI

Harness side
AC303798
Connector: C-35

AJ
2 1313 12 1421 105 4616 15 17789
19 18 2011
22
C-35 (L)
AC303814
Connector: C-35

AI
C-35(L)
AC303804
Connector: C-106

AC
C-106
AC303816
Connector: C-106
AH

AC303809
Connectors: C-209, C-210
AF
C-209
C-210
Junction block (front view)
C-209
Harness side
1016
145
12134117 238 9
C-210
Harness side
4 65321

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-13
STEP 5. Voltage measurement at the B-114 A/C
compressor 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-123, and
earth terminal 8.
(4) Disconnect engine-A/T-ECU connector C-122,
and earth terminal 20.
(5) Measure the voltage between terminal 1 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6.
NO : Refer to Inspection procedure 11 "A/C
compressor power supply system P.55-59."
AC303782
Connector: B-114
<4G1-L.H.D.>
AC
Harness side
B-114 (B)
AC303790
Connector: B-114
<4G6-L.H.D.>
AC
Harness side
B-114 (B)
AC303805
Connectors: C-122 , C-123

C-122 (GR)
C-123 (Y)
C-122 Harness side
C-123
AE
AC305159 Connector C-123
(Harness side)AB
AC305161
Connector C-122
(Harness side)
AB
AC301541EW
Connector B-114
(Harness side)
1

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-14
STEP 6. Connector check: C-139 A/C-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 7.
NO : Repair the connector.
STEP 7. Voltage measurement at C-139 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) Turn the blower switch to the "ON" position.
(4) Measure the voltage between terminal 8 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 10.
NO : Go to Step 8.
STEP 8. Connector check: C-109 resistor
connector
Q: Is the check result normal?
YES :
Go to Step 9.
NO : Repair the connector.
STEP 9. Check the wiring harness between C-109
resistor connector terminal No.4 and C-139
A/C-ECU connector terminal No.8.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction P.00-5).
NO : Repair the wiring harness.
AC303802
Connector: C-139

AE
C-139 (B)
Harness side
AC303802
Connector: C-139

AE
C-139 (B)
Harness side
AC301541EX
Connector C-139
(Harness side)
9
1
1574
12
1110
23
13
5
14616
8
AC303804
Connector: C-109

AE
Harness side
AC303804
Connector: C-109

AE
Harness side
AC303802
Connector: C-139

AE
C-139 (B)
Harness side

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-22
STEP 5. Voltage measurement at the B-114 A/C
compressor 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-123, and
earth terminal 8.
(4) Disconnect engine-A/T-ECU connector C-122,
and earth terminal 20.
(5) Measure the voltage between terminal 1 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 6.
NO : Refer to Inspection procedure 11 "A/C
compressor power supply system P.55-59."
AC303786
Connector: B-114
<4G1-R.H.D.>
AB
Harness side
B-114 (B)
AC303794
Connector: B-114
<4G6-R.H.D.>
AB
Harness side
B-114 (B)
AC303817
Connectors: C-122 , C-123
AF

C-122C-122 (GR)
C-123 (Y)
C-123 Harness side
AC305159 Connector C-123
(Harness side)AB
AC305161
Connector C-122
(Harness side)
AB
AC301541EW
Connector B-114
(Harness side)
1

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-23
STEP 6. Connector check: C-139 A/C-ECU
connector
Q: Is the check result normal?
YES :
Go to Step 7.
NO : Repair the connector.
STEP 7. Voltage measurement at C-139 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) Turn the blower switch to the "ON" position.
(4) Measure the voltage between terminal 8 and
body earth.
OK: System voltage
Q: Is the check result normal?
YES :
Go to Step 10.
NO : Go to Step 8.
STEP 8. Connector check: C-109 resistor
connector
Q: Is the check result normal?
YES :
Go to Step 9.
NO : Repair the connector.
STEP 9. Check the wiring harness between C-109
resistor connector terminal No.4 and C-139
A/C-ECU connector terminal No.8.
Q: Is the check result normal?
YES :
The trouble can be an intermittent
malfunction (Refer to GROUP 00, How to
Cope with Intermittent Malfunction P.00-5).
NO : Repair the wiring harness.
AC303818
Connector: C-139

AJ
Harness side
C-139 (B)
11 12657 8 9 103 421
AC303818
Connector: C-139

AJ
Harness side
C-139 (B)
11 12657 8 9 103 421
AC301541EY
Connector C-139
(Harness side)
11 12
65
7 8 9 10
3 421
AC303816
Connector: C-109
AJ

Harness side
AC303816
Connector: C-109
AJ

Harness side
AC303818
Connector: C-139

AJ
Harness side
C-139 (B)
11 12657 8 9 103 421

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-29
INSPECTION PROCEDURE 5: Blower Fan and Motor do not Turn.
FUSIBLE LINK1IGNITION
SWITCH (IG2)
BLOWER
RELAY
BLOWER
SWITCH
BLOWER
MOTOR
Wire colour code
B : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blue
BR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet



Blower Motor Circuit