Isuzu N-Series. Manual - part 1186

SRS 9B-27

SRS Coil Assembly

Precautions on Service Work

WARNING:

FOLLOW PRECAUTIONS ABOUT SAFETY WHEN
HANDLING DEPLOYED SRS AIRBAG ASSEMBLY.
METAL SURFACE OF SRS AIRBAG ASSEMBLY
WILL BE VERY HOT DIRECTLY AFTER DEPLOY-
MENT. DO NOT TOUCH IT FOR 30 MINUTES AFTER-
WARD. DO NOT PUT THE DEPLOYED SRS AIRBAG
ASSEMBLY NEAR FLAMMABLE MATERIALS. FAIL-
URE TO FOLLOW THIS MAY CAUSE FIRE OR INJU-
RY. IF THE DEPLOYED SRS AIRBAG ASSEMBLY
NEEDS TO BE MOVED BEFORE IT COOLS DOWN,
WEAR GLOVES AND GRASP THE SRS AIRBAG OR
TRIM COVER TO MOVE.

WARNING:

WHEN CARRYING UNDEPLOYED SRS AIRBAG AS-
SEMBLY, BE SURE TO TURN THE TRIM COVER TO-
WARD OUTSIDE TO REDUCE THE POSSIBILITY OF
INJURY IN CASE OF AIRBAG DEPLOYMENT. ALSO,
NEVER GRASP THE HARNESS OR CONNECTOR
OF SRS AIRBAG TO CARRY IT.

Caution:

If deployment occurs, replace the SRS coil assembly.

Removal

1. Stop the function of SRS. (Refer to “Procedure to

stop the function of SRS” in “SRS System Assem-
bly”.)

2. Loosen the mounting bolt from the back of steering

wheel using TORX

®

 driver or equivalent to remove

SRS airbag.

3. Disconnect the 2-pole airbag harness connector

(yellow) and horn harness located in the back of
SRS airbag assembly and remove the SRS airbag.

Legend

1. Airbag harness connector

4. Remove the nut which installs steering wheel.

5. Put the setting marks on steering wheel and shaft

in order to reassemble parts to the original position.

N9A0044E

1

N9A0045E

N9A0050E

9B-28 SRS

Legend

1. Setting mark

6. Set tires in straight position before removing steer-

ing wheel. Install the steering wheel puller (5-8840-
2035-0) to steering wheel and remove it.

7. After removing the cover of harness through hole,

put wire into wheel to remove it.

Caution:

Steering shaft has function as shock absorber. Do not
apply a force in the direction of steering wheel shaft.
When removing the steering wheel, use special tool.

8. Remove the steering cowl.
9. Disconnect SRS harness connector and combina-

tion switch harness connector located in the lower
portion of steering column.

Legend

1. Connector (yellow)
2. SRS coil harness (yellow)

10. Remove the combination switch.

Caution:

Combination switch contains SRS coil assembly. When
replacing SRS coil assembly, always replace the combi-
nation switch assembly as a unit.

Legend

1. SRS coil and combination switch

Installation

1. Set the steering wheel in the straight position.
2. Install the combination switch assembly.
3. Rotate the SRS coil clockwise fully and back off it

about 4 rotations to align neutral mark. (Rotating is
not necessary when assembling new SRS coil with
lock pin.)

Legend

1. Lock pin
2. Neutral mark

1

N9A0051E

1

2

N9A0040E

1

N9A0047E

1

2

N9A0053E

SRS 9B-29

Caution:

• While rotating the SRS coil clockwise fully, stop ro-

tating if resistance is felt. Additional rotation by
force may lead to damage or disconnection on
SRS coil cable.

• More than 3 rotations from neutral point in each di-

rection lead to damage on SRS coil.

4. Install the combination switch.
5. Connect SRS harness connector (yellow) and

combination switch harness connector located in
the lower portion of steering column.

Legend

1. Connector (yellow)
2. SRS coil harness (yellow)

6. Install the steering cowl.

Caution:

When installing steering cowl, assemble carefully not to
let wire hang up on starter switch, combination switch or
SRS coil.

7. Make sure that tires are in the straight position.
8. While checking the engagement in canceller of

flasher, install steering wheel straight and align the
setting marks.

9. Tighten the mounting nut which installs steering

wheel to the specified torque.

Tighten:
Nut to 42.0 

± 6.8 N⋅m (4.3 ± 0.7 kg⋅m / 31.0 ± 5.0 lb⋅ft)

10. For new combination switch (including SRS coil)

with lock pin, pull the lock pin in front to bend.

11. Put the harness through the harness through hole

and assembly the cover.

12. Connect the 2-pole connector (yellow) and horn

harness located in the back of SRS airbag assem-
bly.

13. Secure the connector and harness.
14. Install the SRS airbag to steering wheel and tighten

the bolt to the specified torque.

Tighten:
Bolt to 8.0 

± 2.0 N⋅m (0.8 ± 0.2 kg⋅m / 5.9 ± 1.5 lb⋅ft)

1

2

N9A0040E

9B-30 SRS

Legend

1. Front of steering wheel
2. Steering wheel
3. Connector holder portion
4. Airbag harness

5. Connector
6. Back side of SRS airbag
7. Forward direction of SRS airbag

WARNING:

DO NOT USE SRS AIRBAG OF OTHER VEHICLE OR
MODEL. BE SURE TO CONFIRM THE PART NUM-
BER TO USE APPROPRIATE SRS AIRBAG.

15. Resume the function of SRS. (Refer to “Procedure

to resume the function of SRS” in “SRS System As-
sembly”.)

Special Tool

5-8840-2035-0 Steering wheel puller

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2

4

5

6

3

7

N9A0046E

N9A0052E