Isuzu KB P190. Manual — part 78

POWER-ASSISTED STEERING SYSTEM 3B-51

Steering Column

Steering Column and Associated Parts

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Legend
(1) Inflator Module or Horn Pad
(2) Steering Wheel
(3) Steering Column Cover
(4) Combination Switch and SRS Coil Assembly
(5) Steering Column Assembly

(6) Second Steering Shaft
(7) Lower Second Steering Shaft
(8) Instrument Panel Lower Cover
(9) Driver Knee Bolster (reinforcement)

Removal

1. Turn the steering wheel so that the vehicle's wheels

are pointing straight ahead.

2. Turn the ignition switch to "LOCK".

3. Disconnect the battery "-" terminal cable, and wait at

least 5 minutes. (with SRS air bag)

4. Disconnect the yellow 2-way SRS connector located

under the steering column. (with SRS air bag)

3B-52 POWER-ASSISTED STEERING SYSTEM

CAUTION: The wheel of the vehicle must be straight
ahead and the steering column in the "LOCK"
position before disconnecting the steering column
from the steering gear. Failure to do so will cause
the SRS coil assembly to lose its centering which
will cause damage to the SRS coil assembly (with
SRS air bag).

5. Remove the engine hood opening lever and

steering lower cover.

6. Remove the driver knee bolster (reinforcement).
7. Disable the SRS (Refer to "Disabling the SRS" in

this section) (with SRS air bag).

8. Check the holes on both sides of the steering cover

(with SRS air bag).

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9. Check the position of the pins in thier holes. Push

the pin in the direction of the arrow (with SRS air
bag).

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10. Push the four pins with a φ 5~6 mm (0.20~0.24 in)

bar (with SRS air bag).

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11. Cancel the lock to release the four pins (with SRS

air bag).

12. Loosen the horn pad fixing screw at the rear of the

steering wheel (without SRS air bag).

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POWER-ASSISTED STEERING SYSTEM 3B-53

13. Disconnect the SRS air bag connector (1) and horn

lead connector (2) located behind the air bag
assembly and remove the air bag assembly (with
SRS air bag).

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14. Remove the horn pad and the horn leads at the

center of the wheel (without SRS air bag).

NOTE: It should be removed first from the bottom
spokes.

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15. Apply a setting mark (1) across the steering wheel

and shaft so parts can be reassembled in their
original position. Move the front wheels to the
straight ahead position, then use steering wheel
remover 5-8521-0016-0 (2) to remove the steering
wheel.

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3B-54 POWER-ASSISTED STEERING SYSTEM

16. Remove steering column cover.
17. Disconnect the wiring harness connectors located

under the steering column.

18. Remove the combination switch assembly with SRS

coil.

NOTE: The SRS coil is a part of the combination switch
assembly, which cannot be replaced separately.
Therefore, be sure not to remove the SRS coil from the
combination switch assembly.

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19. Disconnect the starter switch harness connector

located under the steering column, then remove
lock cylinder assembly.

20. Apply a setting mark (1) across the universal joint

and steering shaft to reassemble the parts in their
original position, then remove steering column
assembly and second shaft.

NOTE: A setting mark can be easily made if the shaft is
withdrawn a little by loosening the steering shaft
universal joint.

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Inspection

If abnormal conditions are found during inspection,
replace the steering column assembly.

Column Capsules

Check capsules on steering column bracket assembly;
all must be securely seated in bracket slots and
checked for any loose condition when pushed or pulled
by hand.

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