2009 SUBARU TRIBECA brake fluid

BR-41
General Diagnostic Table
BRAKE
18.General Diagnostic Table
A: INSPECTION
Trouble and possible causeCorrective action
1. Insufficient braking
performance
(1) Fluid leakage from the hydraulic mechanism Correct or replace. (cup, piston seal, piston
boot, master cylinder piston kit, pipe or
hose)
(2) Entry of air into the hydraulic mechanism Bleed air.
(3) Wear, deteriorated surface material, water or fluid on
lining
Replace, grind or clean.
(4) Improper operation of master cylinder, disc caliper,
brake booster or check valve
Correct or replace.
2. Unstable or uneven
braking
(1) Fluid on lining or rotor Correct the cause of fluid leakage, and
clean or replace.
(2) Rotor defective Repair or replace the rotor.
(3) Improper lining contact, deteriorated surface, deterio-
rated or wear lining material
Repair by grinding, or replace.
(4) Deformed back plate Repair or replace.
(5) Over inflation of tires Adjust air pressure.
(6) Defective wheel alignment Adjust alignment.
(7) Loose back plate or suppor t installation bolt Tighten to the specified torque.
(8) Faulty wheel bearing Replace.
(9) Defective hydraulic system Replace the cylinder, brake pipe or hose.
(10) Unstable effect of 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 air.
(2) Excessive play in the master cylinder push rod Adjust.
(3) Fluid leakage from the hydraulic mechanism Correct or replace. (cup, piston seal, piston
boot, master cylinder piston kit, pipe or
hose)
(4) Improper lining contact or worn lining Correct or replace.
4. Brake dragging or
improper brake
return
(1) Insufficient pedal play Adjust play.
(2) Improper master cylinder return Clean or replace the cylinder.
(3) Clogged hydraulic system Replace.
(4) Improper return or adjustment of parking brake Repair or adjust.
(5) Weakened spring tension or breakage of shoe return
spring
Replace the spring.
(6) Improper disc caliper operation Correct or replace.
(7) Faulty wheel bearing Replace.
Brake noise (1)
(creaking sound)
(1) Hardened or deteriorated brake pad Replace the pad.
(2) Worn brake pad Replace the pad.
(3) Loose back plate or suppor t installation bolt Tighten to the specified torque.
(4) Loose wheel bearing Tighten to the specified torque.
(5) Dir ty rotor Clean the rotor, or clean and replace brake
assembly.
6. Brake noise (2)
(hissing sound)
(1) Worn brake pad Replace the pad.
(2) Improperly installed pad Correct or replace the pad.
(3) Loose or bent rotor Retighten or replace.
7. Brake noise (3)
(click sound)
Excessively worn pad or suppor t Replace the pad or the suppor t.

PS-39
Pipe Assembly
POWER ASSISTED SYSTEM (POWER STEERING)
C: INSPECTION
Check all disassembled parts for wear, damage or other problems. Repair or replace the defective parts as
necessary.
CAUTION:
Although the surface layer materials of rubber hoses have excellent weathering resistance, heat re-
sistance and resistance for low temperature brittleness, they are likely to be damaged chemically by
brake fluid, battery electrolyte, engine oil and automatic transmission fluid and their service lives are
to be very shortened. Wipe off hoses immediately if any of these come into contact with the hoses.
Since resistances for heat or low temperature brittleness are gradually declining according to time
accumulation of hot or cold conditions for the hoses and their service lives are shortening accord-
ingly, it is necessary to perform careful inspection frequently when the vehicle is used in hot weather
areas, cold weather areas and a driving condition in which many steering operations are required in
short time.
Particularly continuous work of relief valve over 5 seconds causes to reduce service lives of the hos-
es, the oil pump, the fluid, etc. due to over heat.
Par t Maintenance par ts Corrective action
Pipe
•O–ring fitting surface damage
•Nut damage
•Pipe damage
Replace with a new part.
Clamp • Loose clamps Replace with a new part.
Hose
•Flare surface damage
•Flare nut damage
•Outer surface cracks
•Outer surface wear
•Clip damage
•End coupling or adapter for deformation
Replace with a new part.
Tr o u b l e P o s s i b l e c a u s e C o r r e c t i v e a c t i o n
Pressure hose burst
Excessive holding time of relief status Instruct customers.
Malfunction of the relief valve Replace the oil pump.
Poor cold character istic of fluid R eplace fluid.
Disconnection of the return
hose
Improper connection Repair.
Loosening of the clip Retighten.
Poor cold character istic of fluid R eplace fluid.
Fluid slightly leaking out of
hose
Wrong layout, tensioned Replace the hose.
Excessive play of engine due to deterioration of
engine mounting rubberReplace the parts if defective.
Improper stop position of pitching stopper Replace the parts if defective.
Crack on hose
Excessive holding time of relief statusReplace.
Instruct customers.
Excessive tightening torque for return hose clip Replace.
Power steer ing fluid, engine oil, electrolyte adhere
on the hose surface
Replace.
Be careful during service work.
To o m a n y u s e s i n e x t r e m e l y c o l d w e a t h e rReplace.
Instruct customers.

PS-50
General Diagnostic Table
POWER ASSISTED SYSTEM (POWER STEERING)
1. NOISE & VIBRATION
CAUTION:
Do not keep the relief valve operated over five seconds at any time or inner parts of the oil pump may
be damaged due to rapid increase of fluid temperature.
NOTE:
•A screeching noise may be heard immediately after the engine start in extremely cold conditions. In this
case, if the noise goes off during warm-up there is no abnormal function in the system. This is due to the fluid
characteristics in extremely cold condition.
•The oil pump normally makes a small whining noise due to its mechanism. Even if a noise is heard when
steering wheel is turned at stand still, there is no abnormal function in the system provided that the noise
eliminates when the vehicle is driving.
•When turning the steering wheel with the brake applied when the vehicle is parked, a screeching noise
may be generated by the brake disc and pads. This is not a fault in the steering system.
•There may be a small vibration around the steering devices when turning the steering wheel at standstill,
even though the component parts are operating properly.
Hydraulic systems are likely to generate this kind of vibration as well as working noise and fluid noise be-
cause of combined conditions, i.e., road surface and tire surface, engine speed and turning speed of steering
wheel, fluid temperature and braking condition.
These conditions do not indicate a problem in the system.
Confirm vibration for an AT model, by applying the parking brake on a concrete surface, shifting into the “D”
range, and turning the steering wheel repeatedly from slow to rapid, step by step.
Tr o u b l e P o s s i b l e c a u s e C o r r e c t i v e a c t i o n
Hiss noise (continuous)
While engine is running.
Relief valve emits operating sound when steering wheel is
completely turned in either direction. (Do not keep this
condition over five seconds.)
Normal
Relief valve emits operating sound when steering wheel is
not turned. This means that the relief valve is defective. Replace the oil pump.
Rattling noise (intermittent)
While engine is running.
Interference with adjacent parts
Check the clearance.
Correct if necessary.
Pipe Assembly.>
Loosened installation of oil pump, oil tank, pump bracket,
gearbox or crossmemberRetighten.
Loose oil pump pulley or other pulley(s) Retighten.
Looseness of linkage, play of steering, improper tightening
(looseness) of suspension joint or steering columnRetighten or replace.
Sound generates from the inside of gearbox or oil pump.Replace faulty parts in the gear-
box or oil pump.
Knocking
When turning steering wheel in
both directions with small angle
repeatedly at engine ON or OFF.
Excessive backlash
Loosened lock nut for adjusting backlashAdjust and retighten.
Insufficient tightening or play in the tie–rod or tie–rod end Retighten or replace.
Grinding noise (continuous)
While engine is running.
Air in vane pump
Inspect and retighten the fluid
line connection.
Refill the fluid and vent air.
Va n e p u m p s e i z i n g R e p l a c e t h e o i l p u m p.
Oil pump pulley bearing seized Replace the oil pump.
Folded hose, flattened pipe Replace.
Squeal, squeak (intermittent or
continuous)
While engine is running.
Improper adjustment of pulley belt
Damaged or over tensioned pulley belt
Unequal length of pulley belts
Adjust or replace.
(Replace two belts as a set.)
Runout or dirty V–groove surface of oil pump pulley Clean or replace.

PS-51
General Diagnostic Table
POWER ASSISTED SYSTEM (POWER STEERING)
Sizzling noise (continuous)
While engine is running.
Fluid aeration
Fix the faulty part causing aera-
tion.
Replace the fluid and vent air.
Damaged pipe of gearbox Replace the pipe.
Fa u lt y i n si de of h os e o r pi p e
Flattened hose or pipeRepair or replace.
Abnormal inside of oil tank Replace.
Removed oil tank cap Install cap.
Whistle (continuous)
While engine is running.Fa u lt y p i pe of g ea r b ox o r fa ul t y h os eReplace the faulty parts of the
gearbox or the hose.
Whine or growl (intermittent or
continuous)
While engine is running with/
without steering turned.
Looseness of oil pump, oil pump bracket attachment Retighten.
Fa u lt in s id e o f oi l p u mp o r h os e
Replace the oil pump or hose, if
the noise can be heard when
vehicle is running as well as
being stopped.
To r q u e c o n v e r t e r g r o w l , a i r c o n d i t i o n e r c o m p r e s s i o n g r o w lRemove the power steering pul-
ley belt and check.
Grinding noise (continuous)
While engine is running with the
steering turned.
Fa u lt in s id e o f ge a rb oxReplace the faulty parts of gear-
box.
Fa u lt y s t ee r i ng sh af t b ea r i ng A pp l y gr ea s e o r r e p la ce.
Occurs when turning the steering wheel with brakes (ser-
vice or parking) applied.
If the noise goes off when brake
is released, it is normal.
Vibration
While engine is running with/
without steering turned.
Engine speed is too low. Adjust, and notify customer.
Air in vane pumpRepair faulty part
Ve n t a i r.
Damaged valve in oil pump or gearboxReplace the faulty parts in gear-
box and oil pump.
Excessive play in steering, looseness of suspension parts Retighten.
Tr o u b l e P o s s i b l e c a u s e C o r r e c t i v e a c t i o n

PS-52
General Diagnostic Table
POWER ASSISTED SYSTEM (POWER STEERING)
2. MEASUREMENT OF STEERING EFFORT
Step Check Yes No
1CHECK STEERING EFFORT.
1) Stop the vehicle on paved road.
2) Start the engine.
3) Run the engine at idle.
4) Install a spring scale on the steering wheel.
5) Pull the spring scale at a right angle to the
steering wheel, and measure both right and left
steering wheel efforts.
NOTE:When turning the steering more quickly than
necessary from a direction to the other direction
at an engine speed over 2,000 rpm, steering ef-
fort may be heavy. This is caused by flow char-
acteristic of the fluid in the oil pump and is not a
defect.
Is the steering effort less than
29.4 N (3.0 kgf, 6.6 lb)?
Go to step 2.Adjust the back-
lash.
2CHECK STEERING EFFORT.
1) Stop the engine.
2) Pull the spring scale at a right angle to the
steering wheel, and measure both right and left
steering wheel efforts.
Is the steering effort less than
294.2 N (30 kgf, 66.2 lb)?
Go to step 3.Perform the
adjustment.
3CHECK STEERING WHEEL EFFORT.
1) Remove the universal joint.
2) Measure the steering wheel effort.
Is steering effort less than 2.26
N (0.23 kgf, 0.51 lb)?
Go to step 4.Check, adjust and
replace if neces-
sary.
4CHECK STEERING WHEEL EFFORT.
Measure the steering wheel effort.
Is the difference of steering
effort between right and left
less than 20%?
Go to step 5.Check, adjust and
replace if neces-
sary.
5CHECK UNIVERSAL JOINT.
Measure the swing torque of the joint (yoke of
steering column side). INSPECTION, Universal Joint.>
Is the swing torque of the uni-
versal joint less than 7.3 N
(0.74 kgf, 1.64 lb)?
Go to step 6.Replace with a
new part.
6CHECK UNIVERSAL JOINT.
Measure the swing torque of the joint (yoke of
gearbox side). Universal Joint.>
Is the swing torque of the uni-
versal joint less than 3.8 N
(0.39 kgf, 0.86 lb)?
Go to step 7.Replace with a
new part.
7CHECK FRONT WHEEL.
Check the front wheels.
Does the front wheels have
unsteady revolution or rattling,
or does the brake drag?
Inspect, readjust
and replace if nec-
essary.
Go to step 8.
8CHECK TIE–ROD ENDS.
Remove the tie–rod ends.
If the tie-rod ends of suspen-
sion have unsteady revolution
or rattling?
Inspect and
replace if neces-
sary.
Go to step 9.
9BALL JOINT CHECK.
Remove the ball joint.
If the ball joints of suspension
have unsteady revolution or
rattling?
Inspect and
replace if neces-
sary.
Go to step 10.
10 CHECK GEARBOX.
Measure the rotating of gearbox.
GEARBOX, INSPECTION, Steering Gear-
box.>
Is the rotating resistance of
steering gearbox less than
10.5 N (1.1 kgf, 2.4 lb)? Is the
difference between right and
left sides less than 20%?
Go to step 11.Readjust the back-
lash, and if ineffec-
tive, replace the
faulty par ts.
11 CHECK GEARBOX.
Measure the sliding of gearbox.
Gearbox.>
Is the sliding resistance of
steering gearbox less than 400
N (41 kgf, 90 lb)? Is the differ-
ence between the right and left
sliding resistance less than
20%?
Steering effort is
normal.
Readjust the back-
lash, and if ineffec-
tive, replace the
faulty par ts.

VDC(diag)-9
General Description
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
3. General Description
A: CAUTION
1. SRS AIRBAG SYSTEM
Airbag system wiring harness is routed near the
ABS wheel speed sensor and VDCCM&H/U.
CAUTION:
•All airbag system wiring harness and con-
nectors are colored yellow. Do not use the elec-
trical test equipment on these circuits.
•Be careful not to damage the airbag system
wiring harness when servicing the ABS wheel
speed sensor and VDCCM&H/U.
B: INSPECTION
Before performing diagnosis, check the following
items which might affect VDC problems.
1. BATTERY
Measure the battery voltage and check electrolyte.
Standard voltage: 12 V or more
Specific gravity: 1.260 or more
2. GROUND
Check the tightening torque of ground (GB-7) bolt
of VDC.
Tightening torque:
13 N·m (1.3 kgf-m, 9.6 ft-lb)
3. BRAKE FLUID
1) Check the brake fluid level.
2) Check the brake fluid for leaks.
4. HYDRAULIC UNIT
Check the hydraulic unit.
•With brake tester DRAULIC UNIT VDC OPERATION WITH BRAKE
TESTER, INSPECTION, VDC Control Module &
Hydraulic Control Unit (VDCCM&H/U).>
•Without brake tester ING THE HYDRAULIC UNIT VDC OPERATION
USING A PRESSURE GAUGE, INSPECTION,
VDC Control Module & Hydraulic Control Unit (VD-
CCM&H/U).>
5. BRAKE DRAG
Check for brake drag.
6. BRAKE PAD AND ROTOR
Check the brake pad and rotor.
•Front Pad.> Rotor.>
•Rear Pad.> Rotor.>
7. TIRE
Check the tire specifications, tire wear and air pres-
sure. Description.>

VDC(diag)-15
Control Module I/O Signal
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
B: WIRING DIAGRAM
(1) Battery (16) Rear inlet solenoid valve RH (30) Data link connector
(2) Ignition switch (17) Rear outlet solenoid valve RH (31) TCS OFF switch
(3) VDC control module & hydraulic
control unit (VDCCM&H/U)
(18) Linear valve 1 (32) Steering angle sensor
(19) Linear valve 2 (33) Yaw rate & lateral G sensor
(4) VDC control module (20) Pressure sensor (34)

Tr a n s m i s s i o n c o n t r o l m o d u l e
(TCM)(5) Relay box (21) Stop light switch
(6) Motor relay (22) Stop light (35) Engine control module (ECM)
(7) Fail safe relay (23) VDC indicator light (36) Body integrated unit
(8) Motor (24) VDC warning light and TCS OFF
indicator light
(37)

Fr o nt A B S w he e l sp ee d se n so r L H
(9) Valve relay
(10) Front inlet solenoid valve LH (25) ABS warning light (38)

Fr o nt A B S w he e l sp e ed se n so r
RH(11) Front outlet solenoid valve LH (26) Brake warning light
(12) Front inlet solenoid valve RH (27) Parking brake switch (39) Rear ABS wheel speed sensor LH
(13) Front outlet solenoid valve RH (28) Brake fluid level switch (40) Rear ABS wheel speed sensor
RH(14) Rear inlet solenoid valve LH (29) Combination meter
(15) Rear outlet solenoid valve LH
VDC00366
M
(17)(4)(16)
(19)
(20)
(18)
(38)
(37)
(32)
(33)
(36)
(34)
(35)
(40)
(39)
(15)
(14)
(13)
(12)
(7)
(22)(21)
(31)
(23)(29)
(24)
(25)
(26)
(27) (28)(30)
(1)
(2)
(6)
(11)
(10)
(9)
(8)
(3)
(5)

VDC(diag)-17
Subaru Select Monitor
VEHICLE DYNAMICS CONTROL (VDC) (DIAGNOSTICS)
2. READ CURRENT DATA
1) On the «Main Menu» display screen, select the {Each System Check} and press the [YES] key.
2) On the «System Selection Menu» display screen, select the {Brake Control} and press the [YES] key.
3) Press the [YES] key after {VDC AWD AT} is displayed.
4) On the «Brake Control Diagnosis» display screen, select the {Current Data Display/Save}, and then press
the [YES] key.
5) On the «Display Menu» screen, select the data display method and press the [YES] key.
6) Using a scroll key, scroll the display screen up or down until necessary data is shown.
•A list of the support data is shown in the following table.
NOTE:
For details concerning operation procedure, refer to the “SUBARU SELECT MONITOR OPERATION MAN-
UAL”.
Display Contents to be monitored Unit of measure
FR Wheel SpeedWheel speed detected by front ABS wheel speed sensor RH is dis-
played.km/h or MPH
FL Wheel SpeedWheel speed detected by front ABS wheel speed sensor LH is dis-
played.km/h or MPH
RR Wheel SpeedWheel speed detected by rear ABS wheel speed sensor RH is dis-
played.km/h or MPH
RL Wheel SpeedWheel speed detected by rear ABS wheel speed sensor LH is dis-
played.km/h or MPH
Fr o nt / Re ar G S e ns o r Ve h ic le f r on t / re a r ac ce le ra t io n d e te c te d by G se n so r is d i sp layed .m/s2
Lateral G Sensor Vehicle lateral acceleration detected by G sensor is displayed.m/s2
IG power supply voltage Voltage supplied to VDCCM&H/U is displayed. V
Steering Angle Sensor Steering angle detected by steering angle sensor is displayed. deg
Ya w R a t e S e n s o r V e h i c l e a n g u l a r s p e e d d e t e c t e d b y y a w r a t e s e n s o r i s d i s p l a y e d . d e g / s
Pressure Sensor Brake fluid pressure detected by pressure sensor is displayed. bar
ABS Control Flag ABS control condition is displayed. ON or OFF
EBD Control Flag EBD control condition is displayed. ON or OFF
Brake Switch Brake ON/OFF is displayed. ON or OFF
ABS Warning Light ON operation of the ABS warning light is displayed. ON or OFF
EBD Warning Light ON operation of the EBD warning light is displayed. ON or OFF
Motor Relay Signal Motor relay operation signal is displayed. ON or OFF
Motor Relay Monitor Motor relay monitor signal is displayed. ON or OFF
TCS Control Flag TCS control condition is displayed. ON or OFF
Va l ve R e l ay S i g n a l Va l v e r e l ay o p e r a t i o n s i g n a l i s d i s p l ay e d . O N o r O F F
VDC Control Flag VDC control condition is displayed. ON or OFF
VDC Warning Light ON operation of the VDC warning light is displayed. ON or OFF
OFF Light ON/OFF condition of TCS OFF indicator light is displayed. ON or OFF
E/G Control Prohibited Flag Engine control command signal is displayed. 1 or 0
OFF Switch Signal Operation condition of TCS OFF switch is displayed. ON or OFF
Motor Fail Safe Relay Drive
SignalMotor fail safe relay drive signal is displayed. ON or OFF