Subaru XT 1988 Service Manual page 931

(2) XT6
Heavy steering
effort in all
ranges
I
GOOD
Malfunctioning part(s) of
electrical system * 4
1. Harness
2. Engine signal system
3. Motor pump power
controller
4. Power supply
5.
Signal controller
Locate problem in self·check
mocle
STEERING SYSTEM
4-3
Heavy steer
I
ng
Steering wheel
effort at stand
surges when
std I
turning
I I I
Warning lamp comes
on after engine starts
NG
Tire and rim
1.
Im",op" I;".
0", Of)
NG
specification
Replace or
2.
Improper rims out of
*1
reinflate
specification
3. Tires not properly inflated
!
GOOD
Fluid
Refill,
1. Low fluid level
NG
bleed air,
2.
Aeration
replace or
3. Dust mix
Instruct
4. Deterioration of fluid
customer
5. Poor warming up of fluid *2
t
GOOD
Idling speed
1. Lower idling speed
NG
Adjust or
2. Excessive drop of idl ing speed
instruct
at start or at turning steering
customer
wheel *3
!
GOOD
Measure steering effort
t
GOOD
Malfunctioning part(s) of
electrical system
*
4
1. Harness
2. Engine signal system
3. Motor pump
NG
Repair
4. Power controller
or
5. Power supply
replace
6. Signal controller
7. Car-speed sensor
8.
Steering sensor
9. Poor grounding
t
GOOD
Measure hydroulic pressure
85
Veh icle leads to
Poor return of
one side or the
steering wheel
other
to center
I I
1
Fluid line
NG
Reform or
1. Folded hose
replace
2. Flattened pipe
!
GOOD
Tire and rim
1. Flat tire
2. Mix use of different tires
NG
Fix or
3. Mix use of different rims
4. Abnormal wear of tire
replace
5. Unbalance of remained grooves
6. Unbalance of tire pressure
~
GOOD
Front alignment
NG
Adjust or
1. Improper or unbalance caster
2. Improper or unbalance toe·in
retighten
3. Loose connection of suspension
1
GOOD
*1
*2
Others
Replace,
NG
Adjust or
1. Damaged 10lnt ASSY
2. Unbalance of height
instruct
3. One-sided weight
customer
~
GOOD
Measure steering effort
If tires and/or rims are wider, the load to po wer
n a
up,
steering system is the more. Accordingly, i
condition, for example before fluid warms
relief valve may work before maximum tur ning
avy.
mal,
angle. In this case, steering effort may be he
When measured hydraulic pressure is nor
there is no abnormal thing.
In cold weather, steering effort may be he avy
uid.
heel
uid.
due to increased flow resistance of cold fl
After warming up engine, turn steering w
from stop to stop several times to warm up fl
Then .f steermg effort reduces normally, there is
no abnormal thing.
*3 In cold weather or with insufficient warm up of
engine, steering effort may be heavy due to
excessive drop of idling speed when turning
steering wheel. In this case, it is recommended to
start the vehicle with increasing engine speed
than usual. Then if steering effort reduces
normally, there is no abnormal thing.
*4 Most problems that occur in electrical system can
be isolated as to what system line or part is
malfunctioning.