Motor MITSUBISHI LANCER 2005 Repair Manual

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-53
INSPECTION PROCEDURE 9: Malfunction of the A/C-ECU Power Supply System.
COMMENTS ON TROUBLE SYMPTOM
The A/C-ECU power system may be defective if the
air conditioner, defogger, and outside/inside air
selection damper motor all do not operate normally.
TROUBLESHOOTING HINTS
•Damaged the wiring harness or connectors
•Malfunction of the manual air conditioner control
panel (A/C-ECU)
IGNITION
SWITCH (IG2)
A/C-ECU
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 HEATER CONTROL PANEL
A/C-ECU Power Supply Circuit

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-56
INSPECTION PROCEDURE 10: Malfunction of the A/C-ECU Power Supply System.
COMMENTS ON TROUBLE SYMPTOM
The A/C-ECU power system may be defective if the
air conditioner, defogger, and outside/inside air
selection damper motor all do not operate normally.
TROUBLESHOOTING HINTS
•Damaged the wiring harness or connectors
•Malfunction of the manual air conditioner control
panel (A/C-ECU)
IGNITION
SWITCH (IG2)
HEATER CONTROL PANELA/C-ECU
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
A/C-ECU Power Supply Circuit

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-67
CHECK AT ECU TERMINAL M1552010300527
12
345
678
9 10111213141516
AC300861AC

Terminal No. Check item Checking requirement Normal condition
1 Rear defogger switch Defogger switch: ON 0 V
Defogger switch: OFF System voltage
2 Inside/outside air selection
damper motor (outside air)When the damper is moved to
the inside air recirculation
position0 V
When the damper is moved to
the outside air inside air intake
positionSystem voltage
3 Inside/outside air selection
damper motor (inside air)When the damper is moved to
the inside air recirculation
positionSystem voltage
When the damper is moved to
the outside air inside air intake
position0 V
4 Output to the engine-A/T-ECU
(A/C1)A/C stopped 0 V
•A/C switch: ON
•Blower switch: ONSystem voltage
5 Output to the engine-A/T-ECU
(A/C2)When the A/C is under low load System voltage
When the A/C is under high
load0 V
6 Power supply to the A/C
illuminationLighting switch: ON System voltage
7---
8 Blower switch (lo) blower switch: lo System voltage
9---
10 Power supply to the ignition
switch (IG2)Ignition switch: ON System voltage
11 Earth to the A/C illumination Always 0 V
12 Earth Always 0 V
13 Air thermo sensor (outlet side) Sensor probe temperature 25°C
(1.5k ohm)2.2 V
14, 15 - - -
16 Earth to the air thermo sensor Always 0 V

TROUBLESHOOTING
HEATER, AIR CONDITIONER AND VENTILATION55-68
CHECK AT ECU TERMINAL M1552010300538
21
78
6 534
11
10912
AC304990
AB

Terminal No. Check item Checking requirement Normal condition
1 Output to the engine-A/T-ECU
(A/C1)A/C stopped 0 V
•A/C switch: ON
•Blower switch: ONSystem voltage
2 Output to the engine-A/T-ECU
(A/C2)When the A/C is under low load System voltage
When the A/C is under high
load0 V
3 Earth Always 0 V
4 Earth to the air thermo sensor Always 0 V
5 Power supply to the A/C
illuminationLighting switch: ON System voltage
6 Air thermo sensor (outlet side) Sensor probe temperature 25°C
(1.5k ohm)2.2 V
7 Power supply to the ignition
switch (IG2)Ignition switch: ON System voltage
8 Blower switch (lo) blower switch: lo System voltage
9 Rear defogger switch Defogger switch: ON 0 V
Defogger switch: OFF System voltage
10 Inside/outside air selection
damper motor (outside air)When the damper is moved to
the inside air recirculation
position0 V
When the damper is moved to
the outside air inside air intake
positionSystem voltage
11 Inside/outside air selection
damper motor (inside air)When the damper is moved to
the inside air recirculation
positionSystem voltage
When the damper is moved to
the outside air inside air intake
position0 V
12 Earth to the A/C illumination Always 0 V

HEATER UNIT, HEATER CORE, BLOWER ASSEMBLY AND EVAPORATOR UNIT
HEATER, AIR CONDITIONER AND VENTILATION55-84
BLOWER ASSEMBLY
DISASSEMBLY AND REASSEMBLYM1551005500179
AC3054131AB
3
4
57
6
12
Disassembly steps
1. Joint duct
2. Resister
3. Outside/inside air selection damper
control motor
4. Hose5. Blower motor
6. Air filter
7. Blower caseDisassembly steps (Continued)

BLOWERMOTOR, RESISTOR AND OUTSIDE/ INSIDE AIR SELECTION DAMPER CONTROL MOTOR
HEATER, AIR CONDITIONER AND VENTILATION55-85
BLOWERMOTOR, RESISTOR AND OUTSIDE/
INSIDE AIR SELECTION DAMPER CONTROL MOTOR
REMOVAL AND INSTALLATION
M1551002800320
AC304885AB
2
31
Blower motor removal step
•Front passenger's side under cover
<>1. Blower motor
Resistor removal step
•Glove box (Refer to GROUP 52A,
Instrument Panel P.52A-2).
•Engine-ECU or
Engine-A/T-ECU (Refer to
GROUP 13A, Engine-ECU and
Engine-A/T-ECU P.13A-401).
2. ResistorOutside/inside air selection
damper control motor removal
step
•Glove box (Refer to GROUP 52A,
Instrument Panel P.52A-2).
•Engine-ECU or
Engine-A/T-ECU (Refer to
GROUP 13A, Engine-ECU and
Engine-A/T-ECU P.13A-401).
3. Outside/inside air selection damper
control motor

BLOWERMOTOR, RESISTOR AND OUTSIDE/ INSIDE AIR SELECTION DAMPER CONTROL MOTOR
HEATER, AIR CONDITIONER AND VENTILATION55-86
REMOVAL SERVICE POINT
<> BLOWER MOTOR REMOVAL
NOTE:
Use of commercially available offset screw driver is
recommended.
INSPECTIONM1551006300275
RESISTER CHECK
Use an ohmmeter to measure the resistance
between the terminals. Check that the measured
value is at the standard value.
Standard value:
BLOWER FAN AND MOTOR CHECK
When battery voltage is applied between the
terminals, check that the motor operates. Also, check
that there is no abnormal noise.
AC304916
12
34
AC304843
Measurement terminal Standard value (Ω)
Between terminals 2 and 4
(LO)2.54
Between terminals 1 and 2
(ML)1.24
Between terminals 2 and 3
(MH)0.6
AC100626AB

BLOWERMOTOR, RESISTOR AND OUTSIDE/ INSIDE AIR SELECTION DAMPER CONTROL MOTOR
HEATER, AIR CONDITIONER AND VENTILATION55-87
OUTSIDE/INSIDE AIR SELECTION
DAMPER CONTROL MOTOR CHECK
CAUTION
Cut off the battery voltage when the damper is in
the inside/outside air position.
Lever position Battery
connectionLever
operation
At the inside
position•Connect
terminal 7 to
the positive
battery
terminal
•Connect
terminal 4 to
the negative
battery
terminalThe lever
moves from the
inside position
to the outside
position
At the outside
position•Connect
terminal 7 to
the positive
battery
terminal
•Connect
terminal 6 to
the negative
battery
terminalThe lever
moves from the
outside position
to the inside
position
AC100625
Inside air
Outside air
AE

CONDENSER AND CONDENSER FAN MOTOR
HEATER, AIR CONDITIONER AND VENTILATION55-96
CONDENSER AND CONDENSER FAN MOTOR
REMOVAL AND INSTALLATIONM1552006700384
Pre-removal and Post-installation Operation
•Refrigerant draining and Refilling (Refer to Charging
P.55-70 and Discharging P.55-72).
•Air cleaner cover and air flow sensor assembly Removal
and Installation (Refer to GROUP 15, Air cleaner P.15-3).
AC304889
5, 6
A/C compressor oil:
SUN PAG 56-Pipe coupling
O ring
2
5
10
106
7
9
8
1034
1
NN
NAB
4.9 ± 0.9 N·m
Fan shroud assembly removal
steps
1. Fan shroud assembly
2. Fan
3. Fan motor
4. Fan shroudCondenser removal steps<>5. Liquid pipe A connection
<>6. Flexible discharge hose connection
>>A<<7. Condenser assembly
8. Clamp
9. Receiver
10. O ring

CONDENSER AND CONDENSER FAN MOTOR
HEATER, AIR CONDITIONER AND VENTILATION55-97
REMOVAL SERVICE POINT
<> FLEXIBLE SUCTION HOSE AND
LIQUID PIPE A DISCONNECTION
CAUTION
As the compressor oil and receiver are highly
moisture absorbent, use a non-porous material
to plug the hose and nipples.
To prevent the entry of dust or other foreign bodies,
plug the dismantled hose and condenser assembly
nipples.
INSTALLATION SERVICE POINT
>>A<< CONDENSER INSTALLATION
When replacing the condenser, refill it with a
specified amount of compressor oil and install it. (to
the vehicle).
Compressor oil: SUN PAG 56
Quantity: 15 mL
INSPECTIONM1552014300961
CONDENSER FAN MOTOR CHECK
Check to be sure that the condenser fan motor
operates when battery voltage is applied to terminal
2 and terminal 1 earthed.
A304852
12