Mitsubishi Galant 9G. Manual - part 1484

SPECIAL TOOLS

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-346

SPECIAL TOOLS

M1524000700453

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB990803
Steering wheel puller

General service tool

Steering wheel removal

MB991958

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826

Scan tool (MUT-III sub 
assembly)

A: Vehicle 

communication 
interface (V. C. I.) 

B: MUT-III USB cable
C: MUT-III main harness 

A (Vehicles with CAN 
communication 
system)

D: MUT-III main harness 

B (Vehicles without 
CAN communication 
system)

E: MUT-III main harness 

C (for Daimler Chrysler 
models only)

F: MUT-III measurement 

adapter

G: MUT-III trigger 

harness

MB991824-KIT

NOTE: G: MB991826 
MUT-III Trigger 
Harness is not 
necessary when 
pushing V.C.I. ENTER 
key.

Checking diagnostic trouble code

CAUTION

For vehicles with CAN 
communication, use MUT-III 
main harness A to send 
simulated vehicle speed. If you 
connect  MUT-III main harness 
B instead, the CAN 
communication does not 
function correctly.

MB991865

Dummy resistor

SRS air bag and seat belt with 
pre-tensioner circuit check

MB991866

Resistor harness

SRS air bag circuit check

MB990803AB

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

MB991865

MB991866

TEST EQUIPMENT

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-347

TEST EQUIPMENT

M1524000800256

SRS MAINTENANCE

M1524003900296

The SRS must be inspected by an authorized dealer up to 10 
years after the date of vehicle registration. (Refer to GROUP 
00, Maintenance Service 

− SRS Maintenance ).

MB991884

Resistor harness (For 
Pre-tensioner)

Seat belt with pre-tensioner 
circuit check

MB991885

Pretensioner adapter 
harness

• Deployment of seat belt with 

pre-tensioner inside the 
vehicle

• Deployment of seat belt with 

pre-tensioner outside the 
vehicle

MB991223 
A: MB991219 
B: MB991220 
C: MB991221 
D: MB991222 
Harness set 
A: Test harness 
B: LED harness 
C: LED harness adapter
D: Probe

General service tools

Checking the continuity and 
measuring the voltage at the 
SRS-ECU harness connector

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB991884

MB991885

MB991223

A

D

C

B

AG

TOOL

NAME

USE

Digital multi-meter 
Use a multi-meter for which the maximum 
test current is 2 mA or less at the minimum 
range of resistance measurement

Checking the SRS electrical circuitry with 
SRS check harness

AC000019AB

POST-COLLISION DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-348

POST-COLLISION DIAGNOSIS

M1524001100852

To inspect and service the SRS after a collision (whether or not 
the air bags have deployed), perform the following steps.

SRS-ECU MEMORY CHECK

Required Special Tool:

•  MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A (Vehicles with CAN 

communication system)

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector 

(16-pin).

2. Read (and write down) all displayed diagnostic trouble 

codes (Refer to 

P.52B-33

).

NOTE: If the battery power supply has been disconnected or 
disrupted by the collision, scan tool MB991958 cannot com-
municate with the SRS-ECU. Check the battery, then check 
and, if necessary, repair the front wiring harness and the 
instrument panel wiring harness before proceeding.

3. Read the data list (fault duration and how many times 

memories are erased), using scan tool MB991958.

Data list

4. Erase the diagnostic trouble codes, and then turn the 

ignition switch to the LOCK (OFF) position.

5. Wait for at least one second, and then turn the ignition 

switch to the ON position again.

6. After waiting 15 seconds or more, note all displayed 

diagnostic trouble codes (Refer to 

P.52B-30

).

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827

NO.

DATA LIST ITEM

APPLICABILITY

01

Failure continuation time 1

Maximum time to be stored: 9,999 minutes 
(approximately seven days)

02

Failure continuation time 2

10

Elimination times

Maximum time to be stored: 255

POST-COLLISION DIAGNOSIS

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SUPPLEMENTAL RESTRAINT SYSTEM (SRS)

52B-349

REPAIR PROCEDURE

.

WHEN FRONT AIR BAGS DEPLOY IN A COLLI-
SION.

1. Replace the following parts with new ones:

• SRS-ECU (Refer to 

P.52B-365

).

• Air bag modules (Refer to 

P.52B-368

).

• Seat belt with pre-tensioner (Refer to 

P.52B-380

).

• Front seat asembly <Passenger’s side> (Refer to GROUP 

52A, Front Seat Assembly 

P.52A-20

).

• Front impact sensors (Refer to 

P.52B-362

).

• Instrument panel (Refer to GROUP 52A, Instrument Panel 

Assembly 

P.52A-3

).

2. Check the following parts and replace if there are any 

malfunctions:

• Clock spring (Refer to 

P.52B-368

).

• Seat slide sensor (Refer to 

P.52B-384

).

• Seat belt switch (Refer to GROUP 52A, Front Seat Assem-

bly 

P.52A-20

).

• Steering wheel, steering column shaft assembly

(1) Check the wiring harness (built into the steering wheel) 

and connectors for damage, and terminals for 
deformation.

(2) Install the air bag module to check fit and alignment with 

the steering wheel.

(3) Check the steering wheel for noise, binding or difficult 

operation and excessive free play.

(4) Check the steering column shaft shock absorbing 

mechanism (Refer to GROUP 37, On-Vehicle Service 

− 

Steering Column Shaft Assembly Shock Absorbing 
Mechanism Check ).

3. Check the wiring harnesses for binding, the connectors for 

damage, poor connections, and the terminals for 
deformation (Refer to 

P.52B-26

).

.

WHEN SIDE AIR BAGS DEPLOY IN A COLLISION.

1. Replace the following parts with new ones:

• SRS-ECU (Refer to 

P.52B-365

).

• Side impact sensors (Refer to 

P.52B-377

).

• Front seat assembly (Refer to GROUP 52A, Front Seat 

Assembly 

P.52A-25

).

2. Check the wiring harnesses for binding, the connectors for 

damage, poor connections, and the terminals for 
deformation (Refer to 

P.52B-26

).

.