Diagnosis; General Diagnosis Table - Suzuki sq-416-420-625 Service Manual

GENERAL DIAGNOSIS TABLE

Condition
Steering wheel
feels heavy
(at low speed)
Steering wheel
feels heavy
momentarily when
turning it to the
left or right
Poor recovery
from turns

DIAGNOSIS

Possible Cause
D Fluid deteriorated, low viscosity, different
type of fluid mixed
D Pipes or hoses deformed, air entering
through joint
D Insufficient air purging from P/S circuit
D P/S belt worn, lacking in tension
D Tire inflation pressure excessively low
D Front end alignment out of order
D Steering wheel installed improperly (twisted)
D Bind in tie rod or tie rod end ball joint
D P/S pump hydraulic pressure fails to increase
D P/S pump hydraulic pressure increases
but slowly
D Steering gear box malfunction
D Air drawn in due to insufficient amount
of fluid
D Slipping P/S belt
D P/S pump hydraulic pressure fails to
increase
D P/S pump hydraulic pressure increases
but slowly
D Steering gear box malfunction
NOTE:
To check steering wheel for recovery, with vehicle running at 22 mile/h (35 km/h),
turn steering wheel 90_ and let it free. It should return more than 60_.
D Deformed pipes or hoses
D Steering column installed improperly
D Front end alignment out of order
D Ball joints binding
D P/S pump hydraulic pressure fails to
increase
D P/S pump hydraulic pressure increases
but slowly
D Steering gear box malfunction
POWER STEERING (P / S) SYSTEM 3B1-5
Correction
Replace fluid.
Replace defective part.
Purge air.
Adjust belt tension or replace
belt as necessary.
Inflate tire.
Check and adjust front end
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 end
alignment.
Replace defective part.
Check pressure and repair or
replace defective part.
Check pressure and repair or
replace defective part.
Replace gear box.