Mitsubishi Grandis. Manual - part 403

 

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Mitsubishi Grandis. Manual - part 403

 

 

PRECAUTIONS BEFORE SERVICE

GENERAL

00-18

PRECAUTIONS BEFORE SERVICE

M1001000500549

SUPPLEMENTAL RESTRAINT SYSTEM 
(SRS)

CAUTION

1. Items to review when servicing SRS:

a. Be sure to read GROUP 52B 

 

Supplemental Restraint System (SRS). For 
safe operation, please follow the 
directions and heed all warnings.

b. Wait at least 60 seconds after 

disconnecting the battery cable before 
doing any further work. The SRS system is 
designed to retain enough voltage to 
deploy the air bag even after the battery 
has been disconnected. Serious injury 
may result from unintended air bag 
deployment if work is done on the SRS 
system immediately after the battery cable 
is disconnected.

c. Warning labels must be heeded when 

servicing or handling SRS components. 
Warning labels can be found in the 
following locations.

• Air bag module (Driver's and front 

passenger's)

• Clock spring
• Curtain air bag module (Driver's side 

and front passenger's side)

• Front impact sensor
• Glove box
• Hood
• Instrument panel
• Passengers air bag cut off switch
• Seat belt pre-tensioner
• Side air bag module (Driver's side and 

front passenger's side)

• Side impact sensor
• SRS-ECU
• Steering wheel
• Steering joint cover
• Sun visor

d. Always use the designated special tools 

and test equipment.

e. Store components removed from the SRS 

in a clean and dry place. The air bag 
module should be stored on a flat surface 
and placed so that the pad surface is 
facing upward. Do not place anything on 
top of it.

f. Never attempt to disassemble or repair the 

SRS components (SRS-ECU, air bag 
module and clock spring).

g. Whenever you finish servicing the SRS, 

check the SRS warning lamp operation to 
make sure that the system functions 
properly.

h. Be sure to deploy the air bag before 

disposing of the air bag module or 
disposing of a vehicle equipped with an air 
bag (Refer to GROUP 52B 

 Air Bag 

Module Disposal Procedures

P.52B-246

).

2. Observe the following when carrying out 

operations on places where SRS components 
are installed, including operations not directly 
related to the SRS air bag.

a. When removing or installing parts, do not 

allow any impact or shock to the SRS 
components.

b. If heat damage may occur during paint 

work, remove the SRS-ECU, the air bag 
module, clock spring, the front impact 
sensor, the side impact sensor, and the 
seat belt pre-tensioner.

• SRS-ECU, air bag module, clock 

spring, front impact sensor, the side 
impact sensor: 93 

°C or more

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

INITIALIZATION PROCEDURE FOR 
LEARNING VALUE IN MPI ENGINE
INITIALIZATION PROCEDURE

1. After the ignition switch is in "LOCK" (OFF) 

position, connect MUT-III with the diagnosis 
connector.

2. Select the item on the screen of the initialisation 

for learning, and perform the initialisation.

NOTE: *

1

: Initialize A/T-related learning value.

Service

Item

At replacing engine 
assembly *

1,

*

2

 

All ranges

− *

3

Misfire-related

At replacing injector and 
at cleaning *

2

Learning value for 
air/fuel ratio

At replacing throttle body 
and at cleaning *

2

Idle speed 
control-related

At replacing detonation 
sensor

Learning value for 
knocking

PRECAUTIONS BEFORE SERVICE

GENERAL

00-19

NOTE: *

2

: After initialising the learning value, the 

idling learning in MPI engine is required (Refer to 
LEARNING PROCEDURE FOR IDLING IN MPI 
ENGINE ). 
NOTE: *

3

: The datum items on MUT-III display are 

shown, but do not use them.   

LEARNING PROCEDURE FOR IDLING IN 
MPI ENGINE
PURPOSE

When the engine-ECU <M/T> or the 
engine-A/T-ECU <A/T> is replaced, or when the 
learning value is initialized, the idling is not stabilized 
because the learning value in MPI engine is not 
completed. In this case, carry out the learning 
method for the idling through the following 
procedures.

LEARNING PROCEDURE

1. Start the engine and carry out the warm-up for the 

engine coolant temperature to reach 80

°C or 

more.

2. When the engine coolant temperature is 80

°C or 

more, the warm-up is not needed if the ignition 
switch is in "ON" position once.

3. Place the ignition switch in "LOCK" (OFF) position 

and stop the engine.

4. After 10 seconds or more, start the engine again.
5. For 10 minutes, carry out the idling under the 

condition shown below and then confirm the 
engine has the normal idling.

• Transmission: Neutral (A/T: "P" range)

• Operation in ignition-related, fan and 

attachments: Not to be operated

• Engine coolant temperature: 80°C or more

NOTE: When the engine stalls during the idling, 
check the dirtiness (on the throttle valve) of the 
throttle body and then perform the service from 
Procedure 1 again.

SERVICING ELECTRICAL SYSTEM

CAUTION

Before connecting or disconnecting the negative 
(

) cable, be sure to turn off the ignition switch 

and the lighting switch (If this is not done, there 
is the possibility of semiconductor parts being 
damaged).

Before replacing a component related to the 
electrical system and before undertaking any repair 
procedures involving the electrical system, be sure to 
first disconnect the negative (

−) cable from the 

battery in order to avoid damage caused by 
short-circuiting.

APPLICATION OF ANTI-CORROSION 
AGENTS AND UNDERCOATS

If oil or grease gets onto the oxygen sensor, it will 
cause a drop in the performance of the sensor. 
Cover the oxygen sensor with a protective cover 
when applying anti-corrosion agents and undercoats.

PRE-INSPECTION CONDITION

"Pre-inspection condition" refers to the condition that 
the vehicle must be in before proper engine 
inspection can be carried out. If you see the words 
"Set the vehicle to the pre-inspection condition". In 
this manual, it means to set the vehicle to the 
following condition.

• Engine coolant temperature 80 to 90°C

• Lamps, electric cooling fan and all accessories: 

OFF

• M/T: Neutral

• A/T: N range

AC300693

PRECAUTIONS BEFORE SERVICE

GENERAL

00-20

VEHICLE WASHING

If high-pressure car-washing equipment or steam 
car-washing equipment is used to wash the vehicle, 
be sure to note the following information in order to 
avoid damage to plastic components, etc.

• Spray nozzle distance: Approx. 40 cm or more

• Spray pressure: 3,900 kPa or less

• Spray temperature: 82°C or less

• Time of concentrated spray to one point: within 

30 sec.

MUT-III

Refer to the "MUT-III OPERATING INSTRUCTIONS" 
for instructions on handling the MUT-III.

AC300832AB

Approximately 40 cm

AC305090

MB991910

MB991826

MB991911

MB991825

MB991824

MB991827

AC

Do not used

Vehicle communication interface (V.C.I.)

MUT-III main harness A

MUT-III USB cable

MUT-III main harness B

MUT-III measurement adapter

MUT-III trigger harness

MUT-III sub assembly

PRECAUTIONS BEFORE SERVICE

GENERAL

00-21

CAUTION

Turn the ignition switch to the "LOCK" (OFF) 
position before connecting or disconnecting the 
MUT-III.
Connect the MUT-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 
modifications/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 
addition, used engine oil contains potentially harmful 
contaminants 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 

underpants, 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 
personal clothing.

•  Where there is a risk of eye contact, eye 

protection should be worn, for example, chemical 
goggles 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 
cleaning, the application of preparations 
containing lanolin to replace the natural skin oils 
is advised.

•  Do not use petrol, kerosine, 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.

AC302297

AC310120

AB

MB991827

16-pin

MB991910

MB991824

 

 

 

 

 

 

 

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