1997 SUBARU LEGACY flat tire

1. Entire Brake System
Trouble and possible cause Corrective action
1. Insufficient braking
(1) Fluid leakage from the hydraulic mechanismRepair or replace (cup, piston seal, piston boot, master cylinder
piston kit, pipe or hose).
(2) Entry of air into the hydraulic mechanism Bleed the air.
(3) Excessively wide shoe clearance Adjust the clearance.
(4) Wear, deteriorated surface material, adhering water or fluid
on the liningReplace, grind or clean.
(5) Improper operation of master cylinder, disc caliper, brake
booster or check valveCorrect or replace.
2. Unstable or uneven braking
(1) Fluid on the lining, drum or rotor Eliminate cause of fluid leakage, clean, or replace.
(2) Drum or rotor eccentricity Correct or replace the drum or rotor.
(3) Worn brake drum, or damage to the drum caused by sand Correct by grinding, or replace.
(4) Improper lining contact, deteriorated surface material,
improper inferior material, or wearCorrect by grinding, or replace.
(5) Deformed back plate Correct or replace.
(6) Improper tire inflation Inflate to correct pressure.
(7) Disordered wheel alignment Adjust alignment.
(8) Loosened back plate or the support installing bolts Retighten.
(9) Loosened wheel bearing Retighten to normal tightening torque or replace.
(10) Trouble in the hydraulic system Replace the cylinder, brake pipe or hose.
(11) Uneven effect of the parking brake Check, adjust, or replace the rear brake and cable system.
3. Excessive pedal stroke
(1) Entry of air into the hydraulic mechanism Bleed the air.
(2) Excessive play in the master cylinder push rod Adjust.
(3) Fluid leakage from the hydraulic mechanismRepair or replace (cup, piston seal, piston boot, master cylinder
piston kit, pipe or hose).
(4) Improperly adjusted shoe clearance Adjust.
(5) Improper lining contact or worn lining Correct or replace.
131
4-4DIAGNOSTICS
1. Entire Brake System

2. Hill Holder
Trouble and possible cause Corrective action
1. Counterforce of clutch pedal is too strong.
(1) PHV cable is damaged or does not operate properly. Repair or replace.
(2) Lever of PHV is defective. Replace entire PHV assembly.
(3) Clutch system is anomalous. Refer to“Clutch and pedal cable system”.
2. Vehicle does not stop on uphill road of 3°or higher inclination.
(1) Front side of vehicle is lowered. Refer to“Suspension”.
(2) PHV cable is broken. Replace.
(3) Play of clutch is excessive. Adjust.
(4) PHV cable is elongated. Adjust.
(5) Sealing of PHV is poor. Replace entire PHV assembly.
3. Shock is felt when starting.
(1) Poor adjustment of starting performance: Adjust.
(2) When depressing the brake pedal strongly:(The stronger brake pedal depressing force, the later hill holder
releases.)
(3) When starting on flat road after stopping reverse movement: (Because hill holder is activated.)
4. Vehicle slips down when starting.
(1) PHV cable is elongated. Adjust.
(2) Clutch facing is worn out. Adjust or replace.
(3) Bracket (cable) or stay (PHV) is deformed. Repair or replace.
5. Vehicle cannot start after stoppage.
(1) Return spring is fatigued or broken. Replace.
(2) PHV lever won’t return. Replace entire PHV assembly.
(3) When intentionally depressing brake pedal strongly:[When the brake pedal is depressed by a force of 1,177 N (120
kg, 265 lb) or more.]
6. Abnormal sound is generated upon releasing brake pedal when stopping.
(1) Rotor and pad matched with each other due to inadequate
depressing force to brake pedal.(Abnormal sound is not generated when depressing brake pedal a
little stronger.)
7. Abnormal sound is generated when operating clutch pedal.
(1) Grease is inadequate for the hook of return spring and slid-
ing portion of PHV cable end.Apply grease.
(2) When releasing after maintaining high fluid pressure: (Flowing sound of fluid when releasing high fluid pressure.)
(3) Clutch system is anomalous. Refer to“Clutch and pedal cable system”.
CAUTION:

Description in parentheses is a characteristic of hill holder and does not indicate abnormality.
Depressing force required for clutch pedal equipped to hill holder specifications is 20 to 29 N (2 to 3 kg, 4 to 7 lb) larger than
the conventional specifications, which does not constitute abnormality.

When vehicle cannot travel (brake cannot be released) because return spring is broken, remove adjusting nut, disconnect
clutch and PHV, and then return PHV lever to release the brake. (Be sure to apply the parking brake before starting this opera-
tion.)

The hill holder may not be activated on a slope of an extremely small inclination.
133
4-4DIAGNOSTICS
2. Hill Holder

B6M0048
B: INSPECTION
1. IGNITION SWITCH (ON-CAR)
1) Remove instrument panel lower cover.
2) Remove lower column cover.
3) Unfasten holddown clip which secures harness, and
disconnect connector of ignition switch from body harness.
4) Turn ignition key to each position and check continuity
between terminals of ignition switch connector.
Terminal
Positiona-1 a-2 a-5 a-4
LOCK
ACC
ON
START
B6M0824A
4. Headlight
A: ADJUSTMENT
1. HEADLIGHT AIMING
1) Adjust the headlight aiming by turning the adjusting
screws.
CAUTION:
Before checking the headlight aiming, be sure of the
following:

Turn off the light before adjusting headlight aiming.
If the light is necessary to check aiming, do not turn on
for more than two minutes.

The area around the headlight has not sustained any
accident, damage or other type of deformation.

Vehicle is parked on level ground.

The inflation pressure of tires is correct.

Vehicle’s gas tank is fully charged.

Bounce the vehicle several times to normalize the
suspension.

Make certain that someone is seated in the driver’s
seat.
NOTE:
Adjust vertical aim first, then horizontal aim.
8
6-2SERVICE PROCEDURE
3. Ignition Switch - 4. Headlight

B6M0048
B: INSPECTION
1. IGNITION SWITCH (ON-CAR)
1) Remove instrument panel lower cover.
2) Remove lower column cover.
3) Unfasten holddown clip which secures harness, and
disconnect connector of ignition switch from body harness.
4) Turn ignition key to each position and check continuity
between terminals of ignition switch connector.
Terminal
Positiona-1 a-2 a-5 a-4
LOCK
ACC
ON
START
B6M0824A
4. Headlight
A: ADJUSTMENT
1. HEADLIGHT AIMING
1) Adjust the headlight aiming by turning the adjusting
screws.
CAUTION:
Before checking the headlight aiming, be sure of the
following:

Turn off the light before adjusting headlight aiming.
If the light is necessary to check aiming, do not turn on
for more than two minutes.

The area around the headlight has not sustained any
accident, damage or other type of deformation.

Vehicle is parked on level ground.

The inflation pressure of tires is correct.

Vehicle’s gas tank is fully charged.

Bounce the vehicle several times to normalize the
suspension.

Make certain that someone is seated in the driver’s
seat.
NOTE:
Adjust vertical aim first, then horizontal aim.
8
6-2SERVICE PROCEDURE
3. Ignition Switch - 4. Headlight

12. Phenomena Peculiar to the System
1. WHEN TRAVELING WITH EXTREMELY UNDER
INFLATED TIRES
The TCS is apt to operate (particularly when turning) and,
when it operates, acceleration can become slow*. This
state is not abnormal. Immediately restore the tires to nor-
mal by traveling after releasing the TCS with the TCS OFF
switch.
* Poor acceleration is sometimes caused by the engine
itself. Check whether or not the TCS operating indicator
light (green) comes on to determine that the failure is
caused by the TCS control.
2. WHEN THE T TIRES ARE FITTED
The TCS is apt to operate (particularly when turning) and,
when it operates, acceleration can become slow. This state
is not abnormal. Immediately restore the tires to normal by
traveling after releasing the TCS with the TCS OFF switch.
3. WHEN OPERATING THE TCS CONTINUOUSLY ON
A SLOPE IMPOSSIBLE TO CLIMB OR IN STACK
S TAT E
When operating the TCS for a long time, it can be auto-
matically turned off (the OFF indicator light will come on),
stopping braking. This state is not abnormal. It automati-
cally resets by stopping and leaving the vehicle.
4. WHEN HEAVY LOAD IS PLACED ON THE BRAKES
If service brakes are used too often when descending a
long slope, heavy load can be placed on the brakes. To
prevent this problem, the TCS is automatically turned off
(the OFF indicator light will come on). This state is not
abnormal. Stop the vehicle and leave it in the same way as
step 3, it automatically resets.
5. KICKBACK TO THE BRAKE PEDAL WHEN THE
ABS IS OPERATING
Compared with ABS of the AWD model system, pedal kick-
back with large amplitude of vibration and long cycle can
be felt. This is caused by the difference in system configu-
ration and, therefore, not abnormal. If you receive an
inquiry from your clients, fully explain this point.
128
4-4bBRAKES
12. Phenomena Peculiar to the System

Condition a) Brakes Deceleration : g
Continuous /Intermittent
b) Accelerator Acceleration : g
Continuous /Intermittent
c) Vehicle speed km/h MPH
Advancing
Accelerating
Reducing speed
Low speed
Turning
Others :
d) Tire inflation pressure Front RH tire : kPa
Front LH tire : kPa
Rear RH tire : kPa
Rear LH tire : kPa
e) Degree of wear Front RH tire :
Front LH tire :
Rear RH tire :
Rear LH tire :
f) Genuine parts are used. :Ye s /No
g) Chain is passed around tires. :Ye s /No
h) T tire is used. :Ye s /No
i) Condition of suspension alignment :
j) Loading state :
k) Repair parts are used. :Ye s /No

What :
l) Others :
13
4-4dBRAKES [ABS 5.3i TYPE]
6. Diagnostics Chart for On-board Diagnosis System