Mitsubishi Lancer Evolution VI. Manual — part 120
– Ducts
HEATER AND MANUAL
AIR CONDITIONER
55-32
9
Rear ventilation duct removal steps
D
Rear bumper assembly
D
Trunk side trim
9. Rear ventilation duct
FULL-AUTOMATIC AIR CONDITIONER –
General / Service Specifications /
Lubricants / Special Tools
55-33
FULL-AUTOMATIC AIR CONDITIONER
GENERAL
OUTLINE OF CHANGE
D
The following service procedures have been established.
SERVICE SPECIFICATIONS
Items
Standard value
Idle speed r/min
750
"
50
Idle-up speed r/min
850
"
50
Air gap (Compressor) mm
0.4 – 0.6
Air mix damper potentiometer
resistance k
Ω
MAX. HOT position
4.82
resistance k
Ω
MAX. COOL position
0.18
Outlet air changeover damper
potentiometer resistance k
Ω
DEF position
0.18
potentiometer resistance k
Ω
FACE position
4.82
LUBRICANTS
Items
Specified lubricants
Quantity
Compressor oil m
ȏ
SUN PAG 56
120 – 140
Each connection of refrigerant line
SUN PAG 56
As required
Refrigerant g
R134a (HFC-134a)
555 – 595
SPECIAL TOOLS
Tool
Number
Name
Use
MB991502
MUT-
II
sub-assembly
Inspection of full-automatic air conditioner
MB991529
Diagnosis code
check harness
Inspection of full-automatic air conditioner
using a voltmeter
FULL-AUTOMATIC AIR CONDITIONER –
Troubleshooting
55-34
TROUBLESHOOTING
STANDARD FLOW OF DIAGNOSTIC TROUBLESHOOTING
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.
DIAGNOSIS FUNCTION
DIAGNOSIS CODES CHECK
Connect the MUT-
II
or a voltmeter to the diagnosis connector (16-pin), then check diagnosis codes.
(Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.)
ERASING DIAGNOSIS CODES
Refer to GROUP 00 – How to Use Troubleshooting/Inspection Service Points.
INSPECTION CHART FOR DIAGNOSIS CODES
Code No.
Diagnosis item
Reference
page
11
Inside air temperature sensor system (open circuit)
55-34
12
Inside air temperature sensor system (short circuit)
55-34
13
Outside air temperature sensor system (open circuit)
55-35
14
Outside air temperature sensor system (short circuit)
55-35
15
Heater water temperature sensor system (open circuit)
55-36
16
Heater water temperature sensor system (short circuit)
55-36
21
Air thermo sensor system (open circuit)
55-37
22
Air thermo sensor system (short circuit)
55-37
31
Potentiometer system of air mix damper assembly
55-38
32
Potentiometer system of air outlet changeover damper assembly
55-39
41
Drive system of air mix damper motor assembly
55-40
42
Drive system of air outlet changeover damper motor assembly
55-40
INSPECTION PROCEDURES FOR DIAGNOSIS CODES
Code No.11 Inside air temperature sensor system (open
circuit)
Probable cause
This diagnosis code is output if the power supply line or input line of the inside
air temperature sensor inside A/C-ECU is open-circuited and no signal is input
from the inside air temperature sensor to A/C-ECU.
D
Malfunction of the A/C-ECU
Replace the A/C-ECU.
Code No.12 Inside air temperature sensor system (short
circuit)
Probable cause
This diagnosis code is output if the power supply line or input line of the inside
air temperature sensor inside A/C-ECU is short-circuited and inside air
temperature sensor power supply voltage signals are input to A/C-ECU.
D
Malfunction of the A/C-ECU
Replace the A/C-ECU.
FULL-AUTOMATIC AIR CONDITIONER –
Troubleshooting
55-35
Code No.13 Outside air temperature sensor system (open
circuit)
Probable cause
This diagnosis code is output if the power supply line or input line of the outside
air temperature sensor is open-circuited and no signal is input from the outside
air temperature sensor to A/C-ECU.
D
Malfunction of the outside air temperature sensor
D
Malfunction of connector, harness
D
Malfunction of the A/C-ECU
Outside air temperature sensor check (Refer to P.55-62.)
NG
Replace
OK
Measure at the outside air temperature sensor connector A-35.
D
Disconnect the connector, and measure at the harness
side connector.
D
Voltage between terminal (2) and body earth
OK: 5 V
NG
Check the following connectors:
B-15, B-16
NG
Repair
OK
Check the trouble symptom.
NG
Check the harness between the outside air temperature sensor
and the A/C-ECU.
NG
Repair
OK
Replace the A/C-ECU.
OK
Measure at the A/C-ECU connector B-04.
D
Connect the connector.
D
Voltage between terminal (7) and body earth
OK: 2.3 – 2.9 V
NG
Check the following connectors:
A-15, B-04
NG
Repair
OK
Check the trouble symptom.
NG
Check the harness between the outside air temperature sensor
and the A/C-ECU, and repair if necessary.
OK
Check the following connector: B-04
NG
Repair
OK
Check the trouble symptom.
NG
Replace the A/C-ECU.
Code No.14 Outside air temperature sensor system (short
circuit)
Probable cause
This diagnosis code is output if the power supply line or input line of the outside
air temperature sensor is short-circuited and outside air temperature sensor power
supply voltage signals are input to A/C-ECU.
D
Malfunction of the outside air temperature sensor
D
Malfunction of connector, harness
D
Malfunction of the A/C-ECU
Outside air temperature sensor check (Refer to P.55-62.)
NG
Replace
OK
Measure at the A/C-ECU connector B-04.
D
Connect the connector.
D
Voltage between terminal (7) and body earth
OK: 2.3 – 2.9 V
NG
Check the harness between the outside air temperature sensor
and the A/C-ECU, and repair if necessary.
OK
Replace the A/C-ECU.
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