2002 ISUZU AXIOM air condition

2A±6
POWER±ASSISTED STEERING SYSTEM
Power Steering Pump
Foaming milky power steering fluid, low fluid level, and
possible low pressure can be caused by air in the fluid, or
loss of fluid due to internal pump leakage. Check for leak
and correct. Bleed the system. Extremely cold
temperatures will cause air bubbles in the system if thefluid level is low. If the fluid level is correct and the pump
still foams, remove the pump from the vehicle and check
housing for cracks. If the housing is cracked, replace the
pump housing.
Condition
Possible causeCorrection
Low Pressure Due to Steering PumpRelief valve sticking or inoperative.Replace relief valve.
Side plate not flat against cam ring.Replace side plate.
Extreme wear of cam ring.Replace cam ring.
Scored side plate or rotor.Replace side plate or rotor.
Vanes sticking in rotor slots.Repair or replace vanes and rotor.
Cracked or broken side plate.Replace side plate.
High internal leakage.Repair internal leakage.
Low Pressure Due to Steering GearScored housing bore.Replace housing.
Growling Noise In Steering PumpExcessive back pressure in hoses or
steering unit caused by restriction.Repair steering unit or pump.
Scored side plate or rotor.Replace side plate or rotor.
Worn cam ring.Replace cam ring.
Groaning Noise In Steering PumpAir in the fluid.Bleed hydraulic system.
Low fluid level.Replenish fluid.
Pump mounting loose.Tighten mounting bolt.
Rattling Noise In Steering PumpVanes sticking in rotor slots.Repair or replace vanes and rotor.
Vane improperly installed.Repair rotor and vane.
Swishing Noise In Steering PumpDamaged relief valve.Replace relief valve.
Whining Noise In Steering PumpScored side plate and vanes.Replace side plate and vanes.
Steering Column Lock System
ConditionPossible causeCorrection
Will Not UnlockDamaged lock cylinder.Replace lock cylinder.
Damaged park lock cable.Replace park lock cable.
Will Not LockLock spring broken or worn.Replace lock cylinder.
Damaged lock cylinder.Replace lock cylinder.
Ignition switch stuck.Repair or replace ignition switch.
Park lock cable damaged.Replace park lock cable.
Key Cannot be Removed in
ªOFF LOCKº
Ignition switch is not set correctly.Correct ignition switch.
ªOFF-LOCKºDamaged lock cylinder.Replace lock cylinder.
Faulty shift lock mechanism.Repair or replace the shift lock
mechanism.
Column
ConditionPossible causeCorrection
Noise in ColumnUniversal joint loose.Tighten joint.
Shaft lock snap ring not seated.Place snap ring in proper position.

POWER±ASSISTED STEERING SYSTEM2A±7
Turn Signal Switch
This diagnosis covers mechanical problems only. Refer
to
Turn Signal Switch in Electrical section for electrical
diagnosis.
ConditionPossible causeCorrection
Turn Signal Will Not Stay In Turn
PositionForeign material or loose parts
preventing movement of yoke.Repair or replace signal switch.
Broken or missing detent or
canceling spring.Replace signal switch.
Turn Signal Will Not CancelLoose switch mounting screws.Tighten mounting screws.
Switch or anchor bosses broken.Replace turn signal switch.
Broken, missing or out of position
detent, return or canceling spring.Replace turn signal switch.
Worn canceling cam.Replace turn signal switch.
Turn Signal Difficult To OperateTurn signal switch arm loose.Tighten arm screw.
Broken or distorted yoke.Replace turn signal switch.
Loose or misplaced springs.Replace turn signal switch.
Foreign parts and/or material.Repair turn signal switch.
Loose turn signal switch mounting
screws.Tighten mounting screws.
Turn Signal Will Not Indicate Lane
ChangeBroken lane change pressure pad or
spring hanger.Replace turn signal switch.
Broken, missing or misplaced lane
change spring.Replace turn signal switch.
Base of wire damaged.Replace turn signal switch.
Hazard Switch Cannot Be Turned OffForeign material between hazard
switch to turn signal switch body.Repair or replace hazard switch.
No Turn Signal LightsElectrical failure in chassis harness.Refer to Electrical section.
Inoperative turn signal flasher unit.Replace flasher unit.
Loose chassis harness connector.Repair loose connector.
Front or Rear Turn Signal Lights Not
FlashingBurned-out or damaged turn signal
bulb.Replace bulb.
High resistance connection to
ground at bulb socket.Repair bulb socket.
Loose chassis harness connector.Repair loose connector.

POWER±ASSISTED STEERING SYSTEM2A±21
Disassembly
NOTE: The valve housing is made of aluminum and care
should be exercised when clamping in a vise, etc. to
prevent distortion or damage.
1. Loosen lock nut and remove tie±rod end.
2. Remove clip (3) and band (5), then remove bellows
(4).
3. Remove tie-rod assembly.
To remove, move the boot toward the tie-rod end,
then remove tab washer.
4. Remove oil line, mounting rubber and dust cover.
Inspection and Repair
Inspect the following parts for wear, damage or any
abnormal conditions.
Tie-rod End
If looseness or play is found when checked by moving the
end of ball joint at tie-rod end, replace tie-rod end.
Tie-rod Assembly
If the resistance is insufficient or play is felt when checked
by moving the ball on the tie-rod, replace the tie-rod
assembly.
Rubber Parts
If wear or damage is found through inspection, replace
with new ones.
Reassembly
1. Install mounting rubber and dust cover (If removed).
2. Install oil line.
Torque: 13 N´ m (113 lb in)
3. Install tie-rod assembly with tab washer.
Apply grease to ball joint, install tie-rod and tab
washer, then tighten to specified torque.
Torque: 83 N´m (61 lb ft)
After tightening, bend tab washer against width
across flat of inner ball joint.
4. Apply a thin coat of grease to the shaft for smooth
installation. Then install bellows.
5. Install band and clip.
6. Install tie-rod end and tighten lock nut.
Torque: 98 N´m (72 lb ft)

2A±28
POWER±ASSISTED STEERING SYSTEM
Transfer Gear Assembly
Transfer Gear Assembly and Associated Parts
441R200001
Legend
(1) Transfer Gear Assembly
(2) Bolt, Universal Joint (Steering Shaft Side)
(3) Fixing Bolt Nut(4) Shim
(5) Universal Joint Assembly
(6) Bolt, Universal Joint (Steering Unit Side)
Removal
1. Apply a setting mark across the universal joint
(steering shaft side) and transfer gear assembly to
reassemble the parts in their original position.
2. Remove universal joint bolt (steering shaft side).
3. Apply a setting mark across the universal joint
assembly and the transfer gear assembly to
reassemble the parts in their original position.
4. Remove universal joint bolts (both of transfer gear
assembly side and power steering unit assembly
side).
5. Loosen fixing bolts and nut and remove transfer gear
assembly with shim.
Inspection and Repair
The transfer gear assembly cannot be disassembled. If
damage or abnormal condition are found, replace the
entire transfer gear assembly.
Installation
1. Install the transfer gear assembly to the universal
joint (steering shaft side) align the setting marks
made at removal.
Then tighten the universal joint bolt.
2. Install the universal joint assembly to the power
steering unit assembly align the setting marks made
at removal.
Then temporary tighten the universal joint bolt (both
of transfer gear assembly side and power steering
unit assembly side).
3. Install the transfer gear assembly with the shim to
frame.
Torque: 54 N´m (40 lb ft)
4. Tighten the universal joint bolts to the specified
torque.
Torque: 31 N´m (23 lb ft)

POWER±ASSISTED STEERING SYSTEM2A±33
Steering Wheel
Steering Wheel and Associated Parts
827RW069
Legend
(1) Horn Lead
(2) SRS Connector(3) Steering Wheel
(4) Steering Wheel Fixing Nut
(5) Inflator Module
CAUTION: Once the steering column is removed
from the vehicle, the column is extremely
susceptible to damage. Dropping the column
assembly on its end could collapse the steering shaft
or loosen the slide block which maintains column
rigidity. Leaning on the column assembly could
cause the jacket to bend or deform. Any of the above
damage could impair the column's collapsible
design. If it is necessary to remove the steering
wheel, use only the specified steering wheel puller.
Under no conditions should the end of the shaft be
hammered upon, as hammering could loosen the
slide block which maintains column rigidity.Removal
1. Turn the steering wheel so that the vehicle's wheels
are pointing straight ahead.
2. Turn the ignition switch to ªLOCKº.
3. Disconnect the battery ground cable, and wait at least
5 minutes.
4. Disconnect the yellow 2-way SRS connector located
under the steering column.

3C±2FRONT SUSPENSION
General Description
The front suspension is designed to allow each wheel to
compensate for changes in the road surface level without
greatly affecting the opposite wheel. Each wheel is
independently connected to the frame by a steering
knuckle, ball joint assemblies, and upper and lower
control arms. The front wheels are held in proper
relationship to each other by two tie-rods which are
connected to steering arms on the knuckles, and to a
steering unit.
All models have a front suspension system consisting of
control arms, stabilizer bar, shock absorber and a torsion
bar. The front end of the torsion bar is attached to the
lower control arm. The rear of the torsion bar is mounted
into a height control arm at the crossmember. Vehicle trim
height is controlled by adjusting this arm.
Shock absorbers are mounted between the brackets on
the frame and the lower control arms. The lower portion ofeach shock absorber is attached to the lower control arm.
The upper portion of each shock absorber extends
through a frame bracket and is secured with two rubber
bushings, two retainers and a nut.
Ball joint assemblies are bolted to the outer end of the
upper and lower control arm and are attached to the
steering knuckle.
The inner ends of the upper control arm have pressed in
bushings. Bolts, passing through the bushing, attach the
control arm to the frame. The inner ends of the lower
control arm are attached to the frame by bolts passing
through the bushings.
Side roll of the front suspension is controlled by a spring
steel stabilizer bar. It is mounted in rubber bushings,
which are held to the frame by brackets. The ends of the
stabilizer bar are connected to the lower control arms by
links.
Diagnosis
ConditionPossible causeCorrection
Vehicle PullsMismatched or uneven tires.Replace tire.
Tires not adequately inflated.Adjust tire pressure.
Broken or sagging springs.Replace spring.
Radial tire lateral force.Replace tire.
Improper wheel alignment.Adjust wheel alignment.
Brake dragging in one wheel.Repair brake.
Loose, bent or broken front or rear
suspension parts.Tighten or replace the appropriate
suspension part(s).
Faulty shock absorbers.Replace shock absorber.
Parts in power steering valve
defective.Replace power steering unit.
Abnormal or Excessive Tire WearSagging or broken spring.Replace spring.
Tire out of balance.Balance or replace tire.
Improper wheel alignment.Check front end alignment.
Faulty shock absorber.Replace shock absorber.
Hard driving.Replace tire.
Overloaded vehicle.Replace tire and reduce load.
Tires not rotated periodically.Replace or rotate tire.
Worn or loose road wheel bearings.Replace wheel bearing.
Wobbly wheel or tires.Replace wheel or tire.
Tires not adequately inflated.Adjust the pressure.
Wheel HopBlister or bump on tire.Replace tire.
Improper shock absorber operation.Replace shock absorber.

FRONT SUSPENSION3C±3
Condition CorrectionPossible cause
Shimmy, Shake or VibrationTire or wheel out of balance.Balance wheels or replace tire/or
wheel.
Loose wheel bearings.Replace wheel bearing.
Worn steering linkage ball joints.Replace ball joints.
Worn upper or lower end ball joints.Replace ball joints.
Excessive wheel runout.Repair or replace wheel and/or tire.
Blister or bump on tire.Replace tire.
Excessive loaded radial runout of
tire/wheel assembly.Replace tire or wheel.
Improper wheel alignment.Check wheel alignment.
Loose or worn steering linkage.Tighten or replace steering linkage.
Loose steering unit.Tighten steering unit.
Tires not adequately inflated.Adjust tire pressure.
Loose, bent or broken front or rear
suspension parts.Tighten or replace the appropriate
suspension parts.
Faulty shock absorber.Replace shock absorber.
Hub bearing preload misadjustment.Adjust preload.
Parts in power steering valve
defective.Replace power steering unit.
Hard SteeringBind in steering linkage ball studs,
upper or lower ball joint.Replace ball joint.
Improper wheel alignment.Check wheel alignment.
Tire not adequately inflated.Inflate tires to proper pressure.
Bind in steering column or shaft.Repair or replace.
Improper power steering system
operation.Repair or replace. Refer to Steering
section.
Too Much Play In SteeringWheel bearings worn.Replace wheel bearings.
Loose steering unit or linkage.Retighten or repair.
Worn or loose steering shaft
universal joint.Retighten or replace steering shaft.
Worn steering linkage ball joints.Replace ball joints.
Worn upper or lower end ball joints.Replace ball joints.
Poor Steering Wheel ReturnabilityBind in steering linkage ball joints.Replace ball joints.
Bind in upper or lower ball joints.Replace ball joints.
Bind in steering column and shaft.Repair or replace.
Bind in steering gear.Check and repair steering gear.
Improper wheel alignment.Adjust wheel alignment.
Tires not adequately inflated.Adjust pressure.
Loose steering wheel nut.Retighten.
Worn wheel bearing.Replace.

3C±4FRONT SUSPENSION
Condition CorrectionPossible cause
Abnormal NoiseWorn, sticky or loose upper or lower
ball joint, steering linkage ball joints
or drive axle joints.Replace.
Faulty shock absorbers.Replace.
Worn upper or lower control arm
bushing.Replace.
Loose stabilizer bar.Retighten bolts or replace bushings.
Loose wheel nuts.Tighten nuts. Check for elongated
wheel nut holes. Replace wheel if
required.
Loose suspension bolts or nuts.Retighten suspension bolts or nuts.
Broken or otherwise damaged wheel
bearings.Replace wheel bearing.
Broken suspension springs. Replace spring.
Loose steering unit. Retighten mounting bolt.
Faulty steering unit.Replace steering unit.
Wandering or Poor Steering StabilityMismatched or unevenly worn tires.Replace tire or inflate tires to proper
pressure.
Loose steering linkage ball joints.Replace ball joints.
Faulty shock absorbers.Replace shock absorber.
Loose stabilizer bar.Tighten or replace stabilizer bar or
bushings.
Broken or sagging springs.Replace spring (pairs).
Improper wheel alignment.Adjust wheel alignment.
Erratic Steering When BrakingWorn wheel bearings.Replace wheel bearings.
Broken or sagging springs.Replace spring (pairs).
Leaking caliper.Repair or replace caliper.
Warped discs.Replace brake disc.
Badly worn brake pads.Replace brake pads.
Tires are inflated unequally.Inflate tires to proper pressure.
Low or Uneven Trim HeightBroken or sagging springs.Replace springs (In pairs).
Vehicle overloaded.Reduce load.
Incorrect springs.Adjust or replace torsion bar.
Suspension BottomsVehicle overloaded. Reduce load.
Faulty shock absorber.Replace shock absorber.
Incorrect, broken or sagging springs.Replace springs.
Body LeansLoose stabilizer bar.Tighten stabilizer bar bolts or replace
bushings.
Faulty shock absorber, struts or
mounting.Replace shock absorber.
Broken or sagging springs.Replace springs (In pairs).
Vehicle overloaded.Reduce load.
Cupped TiresWorn wheel bearings.Replace wheel bearing.
Excessive tire or wheel run out.Replace tire or wheel.
Worn ball joints.Replace ball joints.
Tire out of balance.Adjust tire balance.