2009 SUBARU TRIBECA air condition

DI-34
General Diagnostic Table
DIFFERENTIALS
8. General Diagnostic Table
A: INSPECTION
Symptom or trouble Possible cause Remedy
1. Oil leakage(1) Worn, scratched, or incorrectly seated
front or side oil seal. Scored, battered or
excessively wor n sliding surface of com-
panion flange.
Correct or replace.
(2) Clogged or damaged air breather. Clean, repair or replace.
(3) Loose bolts on differential spindle or
side retainer, or incorrectly fitted O-ring.
Tighten the bolts to specified torque.
Replace the O-ring.
(4) Loose rear cover attaching bolts or
damaged gasket.
Tighten the bolts to specified torque.
Replace gasket and apply liquid gasket.
(5) Loose oil filler or drain plug. Retighten and apply liquid gasket.
(6) Wear, damage or incorrect fitting of
spindle, side retainer or oil seal.
Correct or replace.
2. Seizure
NOTE:Seized or damaged parts should be re-
placed, and also other parts should be thor-
oughly checked for any defect and should
be repaired or replaced as required.
(1) Insufficient backlash for hypoid gear. Readjust or replace.
(2) Excessive preload for side, rear or
front bearing.
Readjust or replace.
(3) Insufficient or improper oil used. Replace seized part and fill with speci-
fied oil to specified level.
3. Damage
NOTE:Damaged parts should be replaced, and
also other parts should be thoroughly
checked for any defect and should be re-
paired or replaced as required.
(1) Improper backlash for hypoid gear. Replace.
(2) Insufficient or excessive preload for
side, rear or front bearing.
Readjust or replace.
(3) Excessive backlash for differential
gear.
Replace gear or thrust washer.
(4) Loose bolts and nuts such as hypoid
driven gear bolt
Retighten.
(5) Damage due to overloading. Replace.
4. Noises when starting or shifting
gears
NOTE:
Noises may be caused by differential as-
sembly, universal joint, wheel bearing, etc.
Find out what is actually making noise be-
fore disassembling.
(1) Excessive backlash for hypoid gear. Readjust.
(2) Excessive backlash for differential
gear.
Replace the differential case assembly.
(3) Insufficient preload for front or rear
bearing.
Readjust.
(4) Loose drive pinion nut. Tighten to the specified torque.
(5) Loose bolts and nuts such as side
bearing retainer attaching bolt.
Tighten to the specified torque.
5. Noises when cornering(1) Damaged differential gear. Replace the differential case assembly.
(2) Excessive wear or damage of thrust
washer.
Replace the differential case assembly.
(3) Broken pinion mate shaft. Replace the differential case assembly.
(4) Seized or damaged side bearing. Replace.
6. Gear Noise
NOTE:
Since noises from engine, muffler, trans-
mission, propeller shaft, wheel bearings,
tires, and body are sometimes mistaken for
noises from differential assembly, be care-
ful in checking them. Inspection methods to
locate noises include coasting, accelerat-
ing, cruising, and jacking-up all four wheels.
Perform these inspections according to the
condition of trouble. When listening to nois-
es, shift gears into four wheel drive and
fourth speed position, trying to pick up only
differential noise.
(1) Improper tooth contact of hypoid gear. Readjust or replace hypoid gear set.
(2) Improper backlash of the hypoid gear. Readjust.
(3) Scored or chipped teeth of hypoid
gear.
Replace hypoid gear set.
(4) Seized hypoid gear. Replace hypoid gear set.
(5) Improper preload for front or rear
bearings.
Readjust.
(6) Seized, cut-away or chipped front or
rear bearing.
Replace.
(7) Seized, cut-away or chipped side
bearing.
Replace.
(8) Differential carrier is vibrating. Replace the differential case assembly.

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-46
Oil Pump
POWER ASSISTED SYSTEM (POWER STEERING)
2) Measure the relief pressure.
(1) Using the STs, measure the relief pressure.
(2) Close the valve.
(3) Measure the relief pressure.
ST1 925711000 PRESSURE GAUGE
ST2 34099AC020 ADAPTER HOSE B
ST3 34099AC010 ADAPTER HOSE A
Service limit:
8,800 — 9,400 kPa (90 — 96 kg/cm2, 1,276 —
1,363 psi)
(4) If it is not within the specification, replace the
oil pump.
3) Measure the working pressure.
(1) Using the ST, measure the working pres-
sure.
(2) Open the valve.
(3) Measure the working pressure of control
valve by turning steering wheel from stop to
stop.
NOTE:
Because of the power steering system setup, there
are conditions where the pressure will not rise to
the repair limit value even if the steering wheel is
turned to the maximum steering angle. In this case,
turn the steering wheel further than the maximum
steering angle to measure the operational pres-
sure.
ST1 925711000 PRESSURE GAUGE
ST2 34099AC020 ADAPTER HOSE B
ST3 34099AC010 ADAPTER HOSE A
Service limit:
8,800 — 9,400 kPa (90 — 96 kg/cm2, 1,276 —
1,363 psi)
(4) If it is out of specification, measure the steer-
ing effort. STEERING EFFORT, INSPECTION, General
Diagnostic Table.> If it is not within specifica-
tion, replace the control valve itself or control
valve and pinion as a single unit, using new
parts.
(1) Valve
PS-00153
(1) Valve
PS-00152

PS-48
Power Steering Fluid
POWER ASSISTED SYSTEM (POWER STEERING)
9. Power Steering Fluid
A: SPECIFICATION
B: INSPECTION
1) Check the power steering fluid for deterioration
or contamination. If the fluid is highly deteriorated
or contaminated, drain it and refill with new fluid.
2) Check the joints and units for oil leakage. If any
oil leaks are found, repair or replace the applicable
part.
3) Inspect the fluid level of reservoir tank with vehi-
cle on level surface and engine stopped.
If the level is at “MIN. ” point or below, add fluid to
keep the level in the specified range of the indica-
tor. If at “MAX. ” point or above, drain fluid by using
a syringe or the like.
(1) Check at power steering fluid temperature
20°C (68°F); read the fluid level on the “COLD”
side.
(2) Check at power steering fluid temperature
80°C (176°F); read the fluid level on the “HOT”
side.
C: REPLACEMENT
1) Lift-up the vehicle.
2) Remove the crossmember support.
3) Remove the pipe joint in the center of gearbox,
and connect the vinyl hose to the pipe and joint.
Wipe fluid off while turning the steering wheel.
4) Add the specified fluid to reservoir tank at “MAX”
level.
5) Continue to turn the steering wheel slowly from
lock to lock until the bubbles stop appearing on oil
surface while keeping the fluid at the level in the
Step 4).
6) If the steering wheel is turned in a low fluid level
condition, air will be sucked into the pipe. If sucked,
leave it about half an hour and then do the step 5)
again.
7) Start the engine and let it idle.
8) Continue to turn the steering wheel slowly from
lock to lock again until the bubbles stop appearing
on oil surface while keeping the fluid at the level in
Step 4).
Normally bubbles will stop appearing after turning
the steering wheel from lock to lock three times.
9) In case bubbles do not stop appearing in the
tank, leave it about half an hour and then do the
step 4) all over again.
10) Lower the vehicle, and then idle the engine.
11) Continue to turn the steering wheel from lock to
lock until the bubbles stop appearing and change of
the fluid level is within 3 mm (0.12 in).
12) In case the following happens, leave it about
half an hour and then do step 8) to 11) again.
(1) The fluid level changes over 3 mm (0.12 in).
(2) Bubbles remain on the upper surface of the
fluid.
(3) Grinding noise is generated from oil pump.
13) Check the fluid leakage after turning steering
wheel from lock to lock with engine running.
Recommended power steering fluid Manufacturer
AT F D E X R O N I I I o r e q u i v a l e n t
B.P.
CALTEX
CASTROL
MOBIL
SHELL
TEXACO
PS-00745
HOT MAXHOT MAINCOLD MAXCOLD MAIN

PS-49
General Diagnostic Table
POWER ASSISTED SYSTEM (POWER STEERING)
10.General Diagnostic Table
A: INSPECTION
*1 If the tires or wheels are wider than standard, the load to the power steering system is increased. Accordingly, in a condition,
for example before fluid warms-up, relief valve may work before reaching maximum turning angle. In this case, steering effort
may be heavy. When the measured hydraulic pressure is normal, there is no abnormal thing. *2 In cold weather, flow resistance will increase due to the cold hydraulic fluid, and steering effort will be heavier. After warming-up en-
gine, turn the steering wheel from stop to stop several times to warm-up fluid. If steering effort reduces normally, function is normal. *3 I n c o l d w e a t h e r o r w i t h i n s u f f i c i e n t w a r m – u p o f t h e e n g i n e , s t e e r i n g e f f o r t m a y b e h e a v y d u e t o e x c e s s i v e d r o p o f i d l e r p m w h en
turning the steering wheel. In this case, start the vehicle with increasing engine speed than usual. If steering effort reduces nor-
mally, function is normal.
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
•Steering effort is heavy in all
ranges.
•Steering effort is heavy at
stand still.
•Steering wheel vibrates
when turning.
1. Pulley belt
•Unequal length of pulley belts
•Contact with oil or grease
•Looseness or damage of the pulley belt
•Poor uniformity of the pulley belt cross section
•Pulley belt touches to pulley bottom
•Poor revolution of pulleys (except oil pump pulley)
•Poor revolution of oil pump pulley
Adjust or replace.
2. Tire and wheel
•Improper tire out of specifications*1
•Improper wheel out of specifications*1
•Tires not properly inflated
Replace or reinflate.
3. Fluid
•Low fluid level
•Air entry in fluid
•Entry of dust in the fluid
•Fluid deterioration
•Inadequate warm–up of fluid *2
Refill, bleed air,
replace or instruct cus-
tomer.
4. Idle speed
•Lower idle speed
•Excessive drop of idle speed at start or when turning the steering
wheel *3
Adjust or instruct cus-
tomer.
5. Measure the hydraulic pressure. PRESSURE, INSPECTION, Oil Pump.>
Replace the problem
parts.
6. Measure the steering wheel effort. OF STEERING EFFORT, INSPECTION, General Diagnostic Table.>Adjust or replace.
•Vehicle leads to one side or
the other.
•Returning force of steering
wheel to center is poor.
•Steering wheel vibrates
when turning.
1. Fluid line
•Folded hose
•Flattened pipe
Correct or replace.
2. Tire and wheel
•Flat tire
•Mixed use of different tires
•Mixed use of different wheels
•Abnormal wear of tire
•Unequal tread remaining
•Unequal pressure of tire
Adjust, fix or replace.
3. Front alignment
•Improper or unequal caster
•Improper or unequal toe–in
•Loose suspension connections
Adjust or retighten.
4. Others
•Damaged joint assembly
•Unbalanced height
•Unbalanced weight
Replace, adjust or
instruct customer.
5. Measure the steering wheel effort. OF STEERING EFFORT, INSPECTION, General Diagnostic Table.>Adjust or replace.

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.

TPM(diag)-9
Subaru Select Monitor
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
2. DATA DISPLAY
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 {Tire Pressure Monitor} and press the [YES]
key.
3) Press the [YES] key after the {Tire Pressure Monitor} is displayed.
4) On the «Tire pressure monitor diagnosis» display screen, select the {Data Display}, and then press the
[YES] key, then necessary data will be displayed.
•A list of the support data is shown in the following table.
3. CLEAR MEMORY
1) On the «Main Menu», select the {2. Each Sys-
tem Check} and press the [YES] key.
2) On the «System Selection Menu» display
screen, select the {Tire Pressure Monitor} and
press the [YES] key.
3) Press the [YES] key after the {Tire Pressure
Monitor} is displayed.
4) On the «Tire Pressure Monitor Diagnosis» dis-
play screen, select the {Memory Clear} and press
the [YES] key.
5) When «Done» and «Turn ignition switch OFF»
are shown on the display screen, turn the Subaru
Select Monitor and ignition switch to OFF.
NOTE:
For details concerning operation procedure, refer
to the “SUBARU SELECT MONITOR OPERATION
MANUAL”.
4. REGISTER TRANSMITTER ID
Perform the procedures below to register the trans-
mitter.
•Transmitter replaced.
•Switched the position of the transmitter (rotated
tires)
•Replaced the tire pressure monitoring control
module.
NOTE:
•If registration of the transmitter ID is not possible
after 2 attempts, replace the tire pressure monitor-
ing control module. SURE MONITORING CONTROL MODULE,
REMOVAL, Tire Pressure Monitoring System.>
•If the ignition switch and Subaru Select Monitor
power are turned OFF while registering the trans-
mitter, or if registration is not possible for more than
5 minutes, the registration mode is cancelled.
•When rotating tires, there is no affect on the per-
formance or functions of the tire pressure monitor-
ing control module even if the transmitter (ID) is not
registered, however, the tire position displayed on
the Subaru Select Monitor will be incorrect.
1) Adjust all tire pressures to the specifications.
NOTE:
Refer to the tire caution label on the driver's side
door for the correct tire pressure.
Display Contents to be monitored Unit of measure
FR FN Code
LEARN, LOW BAT, OFF, WAKE, RE ME, NOR-
MAL
LEARN: Transmitted transmitter ID using the transmit-
ter registration tool
LOW BAT: Transmitter battery voltage running low
OFF: Transmitter function stops (no data transmission)
RE ME: Tire air changes ±8.4 kPa
WA K E : S t a r t ed tr an sm it t i ng da t a f r o m a s t op p ed st a te
NORMAL: Conditions other than above
FL FN Code
RR FN Code
RL FN Code
FR tire pressureVa l u e c o nve r t e d t o t i r e p r e s s u r e f r o m d a t a d e l i v -
ered from transmitter is displayed.
(It may be different from values measured by the
direct contact meter.)
kPa, psig, mmHg, inHg
FL tire pressurekPa, psig, mmHg, inHg
RR tire pressurekPa, psig, mmHg, inHg
RL tire pressurekPa, psig, mmHg, inHg
Ve h i c l e S p e e dVe h i c l e s p e e d s i g n a l w h i c h i s i n p u t i n c o n t r o l
module.km/h, MPH
Pressure warning Threshold where tire pressure warning light lights kPa, psig, mmHg, inHg
Return pressureThreshold where tire pressure warning light goes
outkPa, psig, mmHg, inHg

TPM(diag)-28
Diagnostic Procedure with Diagnostic Trouble Code (DTC)
TIRE PRESSURE MONITORING SYSTEM (DIAGNOSTICS)
11.Diagnostic Procedure with Diagnostic Trouble Code (DTC)
A: DTC 11 FL AIR PRESSURE DECREASE
NOTE:
Refer to DTC 14 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
B: DTC 12 FR AIR PRESSURE DECREASE
NOTE:
Refer to DTC 14 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
C: DTC 13 RR AIR PRESSURE DECREASE
NOTE:
Refer to DTC 14 for diagnostic procedure. Diagnostic Procedure with Diagnostic Trouble Code (DTC).>
D: DTC 14 RL AIR PRESSURE DECREASE
DTC DETECTING CONDITION:
Inflation pressure of each tire reduces under specifications (188 kPs (1.9 kgf/cm2, 27.3 psi) or less).
TROUBLE SYMPTOM:
Tire pressure warning light illuminates.
CAUTION:
When driving vehicle to perform driving test, there should be always 2 persons (driver and checker)
to check.
Step Check Yes No
1CHECK THE TIRES.
Lift-up the vehicle and check for damage in the
tires.
Are there cracks or damage? Replace the tire.
Tire.>
Go to step 2.
2CHECK THE TIRES.
Check the tire air pressure.
Is the tire pressure in the spec-
ifications?
Go to step 3.Adjust the air pres-
sure.
3CHECK THE TRANSMITTER
Drive the vehicle at a speed more than 40 km/h
(25 MPH) and compare the data from the
transmitter on the four wheels.
Is there a transmitter with dif-
ferent data?
Replace the trans-
mitter (tire pres-
sure sensor) to WT-11, Tire
Pressure Monitor-
ing System.>.
Go to step 4.
4PERFORM DRIVING TEST.
1) Perform the clear memory mode. TPM(diag)-9, CLEAR MEMORY, OPERATION,
Subaru Select Monitor.>
2) Perform the driving test. TPM(diag)-17, PROCEDURE, Inspection
Mode.>
3) Read the DTC. READ DIAGNOSTIC TROUBLE CODE (DTC),
OPERATION, Subaru Select Monitor.>
Is DTC displayed? Record the DTC.
Pe r for m t h e r e pa i r
according to DTC.
TPM(diag)-26, List
of Diagnostic Trou-
ble Code (DTC).>
Finish the diagno-
sis.