Mitsubishi Lancer (4A9 engine). Manual - part 281

 

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Mitsubishi Lancer (4A9 engine). Manual - part 281

 

 

SERVICE SPECIFICATIONS

HEATER, AIR CONDITIONER AND VENTILATION

55A-5

SERVICE SPECIFICATIONS

M1551000301708

Item

Standard value

Idle speed r/min (N or P range)

1600

750 

± 50 

1800 Petrol

M/T

650 

± 50 

CVT

700 

± 50 

1800 Diesel

650 

± 50 

2000

700 

± 50 

Idle-up speed r/min (N or P range)

1600

750 

± 100 

1800 Petrol, 2000

850 

± 100 

1800 Diesel

900 

± 100 

Air gap (magnetic clutch) mm

0.25 

− 0.45

A/C refrigerant temperature switch 
operating temperature 

°C

Being turned off

135

Being turned on

120

LUBRICANTS

M1551000401385

Item

Specified lubricant

Quantity

Compressor refrigerant unit lubricant mL

1600
(M/T)

SUN PAG 56 or S10X

60 

− 80 (target value: 

60)

Except 
1600 (M/T)

70 

− 90 (target value: 

70)

Each connection of refrigerant line

As required

Refrigerant g

HFC134a (R134a)

500 

± 20

SPECIAL TOOLS

HEATER, AIR CONDITIONER AND VENTILATION

55A-6

SPECIAL TOOLS

M1551000601226

Tool

Number

Name

Use

MB990810

MB990810

Side bearing puller

A/C compressor rotor 
removal and installation

MB992623

MB992623

Guide

MB992624

MB992624

Pusher

MD999566

Claw

B991367

MB991367

Special spanner

Removal and installation 
of the A/C compressor 
armature mounting nut

MB991386

Pin

MB990900

MB990900 or 
MB991164

Door hinge adjusting 
wrench

Removal and installation 
of front deck cross 
member heater unit 
assembly

MB991658

MB991658

Test harness

Inspection of the A/C 
pressure sensor

MB991223

a

d

c

b

DO NOT USE

BA

SPECIAL TOOLS

HEATER, AIR CONDITIONER AND VENTILATION

55A-7

MB991223

a. MB991219
b. MB991220 
c. MB991221
d. MB991222

Harness set

a. Test harness
b. LED harness
c. LED harness adapter
d. Probe

Making voltage and 
resistance 
measurements during 
troubleshooting

a. Connect pin contact 

pressure inspection

b. Power circuit 

inspection

c. Power circuit 

inspection

d. Commercial tester 

connection

MB992006

MB992006

Extra fine probe

Continuity check and 
voltage measurement at 
harness wire or 
connector

Tool

Number

Name

Use

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

a

b

c

d

e

f

DO NOT USE

TROUBLESHOOTING

HEATER, AIR CONDITIONER AND VENTILATION

55A-8

TROUBLESHOOTING

DIAGNOSIS TROUBLESHOOTING FLOW

M1554004700975

Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points 

− Contents of Trouble-

shooting 

DIAGNOSIS FUNCTION

M1554004800905

READING DIAGNOSIS CODES

Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points 

− Diagnosis Function .

ERASING DIAGNOSIS CODES

Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points 

− Diagnosis Function .

MB991955

a. MB991824
b. MB991827
c. MB991910
d. MB991911
e. MB991825
f. MB991826

M.U.T.-III sub-assembly

a. Vehicle 

Communication 
Interface (V. C. I). 

b. USB cable
c. M.U.T.-III main 

harness A (applicable 
to vehicles with CAN 
communication)

d. M.U.T.-III main 

harness B (applicable 
to vehicles without 
CAN communication)

e. Measurement 

adapter

f. Trigger harness

CAUTION

For vehicles with CAN 
communication, use 
M.U.T.-III main harness 
A to send simulated 
vehicle speed. If you 
connect M.U.T.-III main 
harness B instead, the 
CAN communication 
does not function 
correctly.
Check the A/C (The 
M.U.T.-III diagnosis 
codes display, service 
data display and 
actuator test)

Tool

Number

Name

Use

 

 

 

 

 

 

 

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