Diagnostic Information And Procedures; P/S System Symptom Diagnosis - Suzuki Liana RH413 Service Manual

6C-3 Power Assisted Steering System:

P/S System Symptom Diagnosis

Condition
Heavy steering wheel (at
low speed)
Heavy steering wheel
momentarily when turning
it to the left or right
Poor recovery from turns
NOTE
To check steering wheel
for recovery, turn
°
steering wheel 90 and let
it free with vehicle
running at 35 km/h (22
mile/h). If should return
°
more than 60 .
Condition
Vehicle pulls to one side
during straight driving
Steering wheel play is
large and vehicle wanders
Fluid leakage

Diagnostic Information and Procedures

Possible cause
Fluid deteriorated, low viscosity,
different type of fluid mixed
Pipes or hoses deformed, air entering
through joint
Insufficient air purging from P/S circuit
P/S belt worn, lacking in tension
Tire inflation pressure excessively low
Front wheel misaligned
Steering wheel installed improperly
(twisted)
Bind tie-rod end ball joint or lower ball
joint
P/S pump hydraulic pressure fails to
increase
P/S pump hydraulic pressure increases
but slowly
Steering gear box malfunction
Air drawn in due to insufficient amount of
fluid
Slipping P/S belt
P/S pump hydraulic pressure fails to
increase
P/S pump hydraulic pressure increases
but slowly
Steering gear box malfunction
Deformed pipes or hoses
Steering column installed improperly
Front wheel misaligned
Ball joints binding
P/S pump hydraulic pressure fails to
increase
P/S pump hydraulic pressure increases
but slowly
Steering gear box malfunction
Possible cause
Mismatched or uneven tire
Low or uneven tire inflation pressure
Brake dragging in one wheel
Front wheel misaligned
Rear wheel misaligned
Malfunction of control valve in gear box Replace gear box.
Loose joints of (hydraulic pressure)
pipes and hoses
Deformed or damaged pipes or hoses
Correction / Reference Item
Replace fluid.
Replace defective part.
Purge air.
Adjust belt tension or replace belt as
necessary.
Inflate tire.
Check and adjust front wheel alignment.
Install steering wheel correctly.
Replace defective part.
Check pressure and repair or replace defective
part.
Check pressure and repair or replace defective
part.
Replace gear box.
Add fluid and purge air.
Adjust belt tension or replace belt as
necessary.
Check pressure and repair or replace defective
part.
Check pressure and repair or replace defective
part.
Replace gear box.
Replace defective part.
Install steering column correctly.
Check and adjust front wheel alignment.
Replace defective part.
Check pressure and repair or replace defective
part.
Check pressure and repair or replace defective
part.
Replace gear box.
Correction / Reference Item
Replace tire.
Inflate tires to proper pressure or adjust right &
left tires inflation pressure.
Repair.
Check and adjust front wheel alignment.
Check and adjust rear wheel alignment.
Refer to "Steering Symptom Diagnosis in
Section 6A".
Retighten.
Replace defective part.
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