Mitsubishi Galant. Manual - part 606

INDIVIDUAL COMPONENT SERVICE

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-65

IN D IVID U A L C O M PO N ENT SERVIC E

M1524002900088

WARNING

•

The SRS components should not be subjected to heat over 93

°°°°

C (200

°°°°

F), so remove the 

SRS-ECU, air bag modules (driver's side and front passenger's side), front seat 
assemblies (side air bag module), clock spring, side impact sensors before drying or 
baking the vehicle after painting. Recheck the SRS system operability after reinstalling 
them. (Refer to GROUP 00, Maintenance Service -SRS Maintenance.)

•

If the SRS components are removed for the purpose of checking, sheet metal repair, 
painting, etc., they should be stored in a clean, dry place until they are reinstalled.

If the SRS components are to be removed or replaced as a result of maintenance, diagnosis, etc., follow the 
appropriate procedure in this section. (SRS Air Bag Control Unit: refer to 

P.52B-65

, Air Bag Modules and 

Clock Spring: refer to 

P.52B-67

, Side impact sensor: refer to 

P.52B-74

.)

SRS C O N TRO L UN IT(SRS-ECU )

M1524002100082

WARNING

•

Never attempt to disassemble or repair the SRS-ECU. If faulty, replace it.

•

Do not drop or subject the SRS-ECU to impact or vibration. If denting, cracking, 
deformation, or rust are discovered in the SRS-ECU, replace it with a new SRS-ECU. 
Discard the old one.

•

After deployment of an air bag, replace the SRS-ECU with a new one.

•

Never use an ohmmeter on or near the SRS-ECU, and use only the special test equipment 
described on 

P.52B-61

.

SRS CONTROL UNIT(SRS-ECU)

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-66

REMOVAL AND INSTALLATION

REMOVAL SERVICE POINT

<<A>> NEGATIVE (

−−−−

) BATTERY CABLE DISCONNECTION

DANGER

Wait at least 60 seconds after disconnecting the 
battery cable before doing any further work. (Refer to 

P.52B-15

.)

WARNING

Battery posts, terminals and related accessories 
contain lead and lead compounds. WASH HANDS 
AFTER HANDLING.

Disconnect the negative battery cable from the battery and 
tape the terminal to prevent accidental connection and 
deployment.

Pre-removal Operation

•

Turn the ignition switch to "LOCK" (OFF) position.

•

Floor Console Removal (Refer to GROUP 52A, Floor 
Console 

P.52A-11

.)

Post-installation Operation

•

Floor Console Installation (Refer to GROUP 52A, Floor 
Console 

P.52A-11

.)

AC003216AB

1

2

3

4.9 ± 1.0 N·m
44 ± 8 ft-lb

REMOVAL STEPS

<<A>>

1.

NEGATIVE (

−

) BATTERY CABLE 

CONNECTION

2.

SRS-ECU BRACKET

3.

SRS-ECU

INSTALLATION STEPS

>>A<<

3.

SRS-ECU

2.

SRS-ECU BRACKET

1.

NEGATIVE (

−

) BATTERY CABLE 

CONNECTION

>>B<<

•

POST-INSTALLATION 
INSPECTION

ACX00583

INSULATING TAPE

BATTERY

BATTERY CABLE (–)

AC

AIR BAG MODULE(S) AND CLOCK SPRING

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-67

INSTALLATION SERVICE POINTS

>>A<< SRS-ECU INSTALLATION

WARNING

The SRS may not activate if the SRS-ECU is not 
installed properly, which could result in serious injury 
or death to the vehicle's driver or front passenger.

>>B<< POST-INSTALLATION INSPECTION
1. Reconnect the negative (

−

) battery cable.

2. Turn the ignition switch to "ON" position.

3. Does the "SRS" warning light illuminate for approximately 7 

seconds, and then remain off for at least 5 seconds after 
turning "OFF."

4. If yes, the SRS system is functioning properly. If no, refer to 

P.52B-55

.

SRS CONTROL UNIT (SRS-ECU) INSPECTION

M1524002200078

WARNING

If a dent, crack, deformation or rust is discovered, 
replace the SRS-ECU with a new one. 

•

Check the SRS-ECU and brackets for dents, cracks or 
deformation. 

•

Check the SRS-ECU connector for damage, and the 
terminals for deformation. 

NOTE: Refer to for inspection of SRS-ECU for other than 
physical damage. 

A IR  B A G  M O D U LE(S) A N D  C LO C K  SPR IN G

M1524002400083

WARNING

•

Never attempt to disassemble or repair the air bag modules or clock spring. If faulty, 
replace it.

•

Do not drop the air bag modules or clock spring or allow contact with water, grease or oil. 
Replace it if a dent, crack, deformation or rust is detected.

•

The air bag modules should be stored on a flat surface is facing upward. Do not place 
anything on top of it.

•

Do not expose the air bag modules to temperatures over 93

°°°°

C (200

°°°°

F).

•

After deployment of an air bag, replace the clock spring with a new one.

•

Wear gloves and safety glasses when handling ar bags that have already deployed.

•

An undeployed air bag module should only be disposed of in accordance with the 
procedures. (Refer to 

P.52B-77

.)

AC003188AB

SRS WARNING LIGHT

AIR BAG MODULE(S) AND CLOCK SPRING

TSB Revision

SUPPLEMENTAL RESTRAINT SYSTEM(SRS)

52B-68

<Side  air bag module>

For removal and installation of the front seatback assembly with side air bag module, refer to GROUP52A, 
Front Seat 

P.52A-16

.

REMOVAL AND INSTALLATION
<Air bag module (driver's side), clock spring>

Required Special Tools: 

•

MB990502: Scan Tool (MUT-II)

•

MB990803: Steering Wheel Puller

•

MB991613: SRS Check Harness

AC003217AB

1

2

3

4

5

41 ± 8 N·m
31 ± 5 ft-lb

N

AIR BAG MODULE REMOVAL 
STEPS

<<A>>

1. NEGATIVE (

−

) BATTERY CABLE 

CONNECTION

<<B>>

2. AIR BAG MODULE

CLOCK SPRING REMOVAL STEPS

<<A>>

1. NEGATIVE (

−

) BATTERY CABLE 

CONNECTION

<<B>>

2. AIR BAG MODULE

<<C>>

3. STEERING WHEEL
4. COLUMN COVER LOWER

<<D>>

5. CLOCK SPRING

AIR BAG MODULE INSTALLATION 
STEPS

>>A<<

•

PRE-INSTALLATION INSPECTION

>>D<<

2. AIR BAG MODULE
1. NEGATIVE (

−

) BATTERY CABLE 

CONNECTION

>>E<<

•

POST-INSTALLATION INSPECTION

CLOCK SPRING INSTALLATION 
STEPS

>>A<<

•

PRE-INSTALLATION INSPECTION

>>B<<

5. CLOCK SPRING
4. COLUMN COVER LOWER

>>C<<

3. STEERING WHEEL

>>D<<

2. AIR BAG MODULE
1. NEGATIVE (

−

) BATTERY CABLE 

CONNECTION

>>E<<

•

POST-INSTALLATION INSPECTION