Mitsubishi Lancer Evolution IX. Manual - part 107

 

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Mitsubishi Lancer Evolution IX. Manual - part 107

 

 

AC304777

Steering shaft

AB

MB991502

<Using the M.U.T.-II>

AC211686

MB991911

16-PIN

MB991827

MB991824 

AE

<Using the M.U.T.-III>

PRECAUTIONS BEFORE SERVICE

GENERAL

00-21

CAUTION

Turn the ignition switch to the "LOCK" (OFF) 
position before connecting or disconnecting the 
M.U.T.-II/III.
Connect the M.U.T.-II/III to the diagnosis connector 
as shown in the illustration.

IN ORDER TO PREVENT VEHICLES 
FROM FIRE

"Improper installation of electrical or fuel related parts 
could cause a fire. In order to retain the high quality 
and safety of the vehicle, it is important that any 
accessories that may be fitted or modifica-
tions/repairs that may be carried out which involve 
the electrical or fuel systems, MUST be carried out in 
accordance with MMC's information/Instructions".

ENGINE OILS
HEALTH WARNING

Prolonged and repeated contact with mineral oil will 
result in the removal of natural fats from the skin, 
leading to dryness, irritation and dermatitis. In addi-
tion, used engine oil contains potentially harmful con-
taminants which may cause skin cancer. Adequate 
means of skin protection and washing facilities must 
be provided.

RECOMMENDED PRECAUTIONS

The most effective precaution is to adapt working 
practices which prevent, as far as practicable, the 
risk of skin contact with mineral oils, for example by 
using enclosed systems for handling used engine oil 
and by degreasing components, where practicable, 
before handling them.
Other precautions:

• Avoid prolonged and repeated contact with oils, 

particularly used engine oils.

• Wear protective clothing, including impervious 

gloves where practicable.

• Avoid contaminating clothes, particularly under-

pants, with oil.

• Do not put oily rags in pockets, the use of overalls 

without pockets will avoid this.

• Do not wear heavily soiled clothing and 

oil-impregnated foot-wear. Overalls must be 
cleaned regularly and kept separately from per-
sonal clothing.

•  Where there is a risk of eye contact, eye protec-

tion should be worn, for example, chemical gog-
gles or face shields; in addition an eye wash 
facility should be provided.

• Obtain First Aid treatment immediately for open 

cuts and wounds.

• Wash regularly with soap and water to ensure all 

oil is removed, especially before meals (skin 
cleansers and nail brushes will help). After clean-
ing, the application of preparations containing 
lanolin to replace the natural skin oils is advised.

•  Do not use petrol, kerosene, diesel fuel, gas oil, 

thinners or solvents for cleaning skin.

•  Use barrier creams, applying them before each 

work period, to help the removal of oil from the 
skin after work.

• If skin disorders develop, obtain medical advice 

without delay.

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

GENERAL

00-22

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

M1001009800075

The Supplemental Restraint System (SRS) and seat 
belt with pre-tensioner is designed to supplement the 
driver's and front passenger's seat belts to help 
reduce the risk or severity of injury to the driver and 
front passenger by activating and deploying both 
front air bags in certain frontal collisions.
The SRS consist of two air bag modules, SRS air 
bag control unit (SRS-ECU), two front impact sen-
sors, SRS warning lamp, clock spring and seat belt 
pre-tensioner. Front air bags are located in the centre 
of the steering wheel and above the glove box. Each 
air bag is made up of a folded air bag and an inflator 
unit. The SRS-ECU under the front floor console 

monitors the system and has a safing G-sensor and 
analogue G-sensor. The warning lamp on the instru-
ment panel indicates the operational status of the 
SRS. The clock spring is installed in the steering col-
umn. The seat belt pre-tensioner is built into the 
driver's and passenger's front seat belt retractor. The 
front impact sensor is assembled on the headlamp 
support panel to monitor collision upon frontal 
impact.
Only authorized service personnel should do work on 
or around the SRS components. Those service per-
sonnel should read this manual carefully before start-
ing any such work.

AC310783

AC304668

AC310070

AC208855

Driver's air bag 
module

Clock spring

Passenger's (front) 
air bag module

SRS-ECU

Diagnosis connector

SRS warning lamp

Seat belt with 
pre-tensioner

Front impact sensor 

AB

SRS SERVICE PRECAUTIONS

GENERAL

00-23

SRS SERVICE PRECAUTIONS

M1001006000229

DANGER

In order to avoid injury to yourself or others 
from accidental deployment of the air bag 
during servicing, read and carefully follow all 
the precautions and procedures described in 
this manual.

CAUTION

Do not use any electrical test equipment on or 
near SRS components, except those specified on 

P.52B-8

.

CAUTION

Never Attempt to Repair the Following Compo-
nents:

1. SRS air bag control unit (SRS-ECU)
2. Clock spring
3. Driver's and passenger's (front) air bag mod-

ules

4. Front impact sensor
5. Seat belt with pre-tensioner

NOTE: If any of these components are diagnosed as 
faulty, they should only be replaced, in accordance 
with the INDIVIDUAL COMPONENTS SERVICE pro-
cedures in this manual, starting at page 

P.52B-105

.

AC300634

SRS-ECU connector

AB

CAUTION

Do not attempt to repair the wiring harness con-
nectors of the SRS. If a defective wiring harness 
is found, repair or replace it by referring to the 
table below.

SRS-ECU terminal No.

Destination of harness

Remedy

1, 2

Instrument panel wiring harness 

 

Front wiring harness (RH) 

 Front 

impact sensor (RH)

Correct or replace each wiring 
harness.

3, 4

Instrument panel wiring harness 

 

Front wiring harness (LH) 

 Front 

impact sensor (LH)

Correct or replace each wiring 
harness.

7

Instrument panel wiring harness

 

Earth

Correct or replace the instrument 
panel wiring harness.

8

Instrument panel wiring harness 

 

SRS warning lamp

Correct or replace the instrument 
panel wiring harness.

9, 10

Instrument panel wiring harness 

 

Passenger's (front) air bag module

Correct or replace the instrument 
panel wiring harness.

11, 12

Instrument panel wiring harness 

 

Clock spring 

 Driver's air bag 

module

Correct or replace instrument panel 
wiring harness. Replace the clock 
spring.

13

Instrument panel wiring harness 

 

Junction block (fuse No.3)

Correct or replace the instrument 
panel wiring harness.

16

Instrument panel wiring harness 

 

Junction block (fuse No.2)

Correct or replace the instrument 
panel wiring harness.

SRS SERVICE PRECAUTIONS

GENERAL

00-24

DANGER

After disconnecting the battery cable, wait 60 

seconds or more before proceeding with the 

following work. In addition, insulate the neg-

ative battery terminal with a tape. The con-

denser inside the SRS-ECU is designed to 

retain enough voltage to deploy the air bag 

for a short time even after the battery has 

been disconnected, so serious injury may 

result from unintended air bag deployment if 

work is done on the SRS system immediately 

after the battery cables are disconnected.

CAUTION

The SRS components and seat belt with pre-ten-
sioner should not be subjected to heat, so 
remove the SRS-ECU, driver’s and passenger’s 
(front) air bag modules, clock spring, and seat 
belt pre-tensioner before drying or baking the 
vehicle after painting.

• SRS-ECU, air bag modules, clock spring, 

impact sensors: 93

°C or more

• Seat belt with pre-tensioner: 90°C or more

CAUTION

Whenever you finish servicing the SRS, always 
erase the diagnosis code and check warning 
lamp operation to make sure that the system 
functions properly.

AC006195

SRS-harness connector

SRS-ECU harness connector
(rear side)

AH

MB992006

CAUTION

If checks are carried out by using the SRS-ECU 
harness connector, observe the following proce-
dures: Insert the special tool extra fine probe 
(MB992006) into connector from harness side 
(rear side), and connect the tester to this probe. If 
any tool than special tool is used, damage to the 
harness and other components will result. Never 
insert the probe directly to the terminals from the 
front of the connector. The terminals are plated 
to increase their conductivity, so that if they are 
touched directly by the probe, the plating may 
break, which will cause drops in reliability.

20

Instrument panel wiring harness 

 

Diagnosis connector

Correct or replace the instrument 
panel wiring harness.

27, 28

Floor wiring harness (RH) 

 

Passenger's (front) seat belt 
pre-tensioner <LH drive vehicles> 
Floor wiring harness (LH) 

 

Passenger's (front) seat belt 
pre-tensioner <RH drive vehicles>

Connect or replace the floor wiring 
harness.

29, 30

Floor wiring harness (LH) 

 Driver's 

seat belt pre-tensioner <LH drive 
vehicles> Floor wiring harness (RH) 
 Driver's seat belt pre-tensioner 
<RH drive vehicles>

Connect or replace the floor wiring 
harness.

AC300580AB

Insulating tape

Battery

Battery cable

SRS-ECU terminal No.

Destination of harness

Remedy

 

 

 

 

 

 

 

Content   ..  105  106  107  108   ..