Suzuki Liana RH413, Service Manual

Page: 794 / 1302

6C-3 Power Assisted Steering System:
Diagnostic Information and Procedures
P/S System Symptom Diagnosis
S3RH0A6304001
Condition Possible cause Correction / Reference Item
Heavy steering wheel (at
low speed) Fluid deteriorated, low viscosity,
different type of fluid mixed Replace fluid.
Pipes or hoses deformed, air entering
through joint Replace defective part.
Insufficient air purging from P/S circuit Purge air.
P/S belt worn, lacking in tension Adjust belt tension or replace belt as
necessary.
Tire inflation pressure excessively low Inflate tire.
Front wheel misaligned Check and adjust front wheel alignment.
Steering wheel installed improperly
(twisted) Install steering wheel correctly.
Bind tie-rod end ball joint or lower ball
joint Replace defective part.
P/S pump hydraulic pressure fails to
increase Check pressure and repair or replace defective
part.
P/S pump hydraulic pressure increases
but slowly Check pressure and repair or replace defective
part.
Steering gear box malfunction Replace gear box.
Heavy steering wheel
momentarily when turning
it to the left or right Air drawn in due to insufficient amount of
fluid Add fluid and purge air.
Slipping P/S belt Adjust belt tension or replace belt as
necessary.
P/S pump hydraulic pressure fails to
increase Check pressure and repair or replace defective
part.
P/S pump hydraulic pressure increases
but slowly Check pressure and repair or replace defective
part.
Steering gear box malfunction Replace gear box.
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
°
.
Deformed pipes or hoses Replace defective part.
Steering column installed improperly Install steering column correctly.
Front wheel misaligned Check and adjust front wheel alignment.
Ball joints binding Replace defective part.
P/S pump hydraulic pressure fails to
increase Check pressure and repair or replace defective
part.
P/S pump hydraulic pressure increases
but slowly Check pressure and repair or replace defective
part.
Steering gear box malfunction Replace gear box.
Condition Possible cause Correction / Reference Item
Vehicle pulls to one side
during straight driving Mismatched or uneven tire Replace tire.
Low or uneven tire inflation pressure Inflate tires to proper pressure or adjust right &
left tires inflation pressure.
Brake dragging in one wheel Repair.
Front wheel misaligned Check and adjust front wheel alignment.
Rear wheel misaligned Check and adjust rear wheel alignment.
Malfunction of control valve in gear box Replace gear box.
Steering wheel play is
large and vehicle wanders Refer to “Steering Symptom Diagnosis in
Section 6A”.
Fluid leakage Loose joints of (hydraulic pressure)
pipes and hoses Retighten.
Deformed or damaged pipes or hoses Replace defective part.