Mitsubishi Outlander GS45X. Manual — part 1561
POWER STEERING DIAGNOSIS
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POWER STEERING
37-7
STEP 2. Check the drive belt for damage.
Q: Is the drive belt damaged?
YES : Replace the drive belt (Refer to GROUP 11A
−
Crankshaft pulley
<2.4L>, GROUP 11C
−
Crankshaft pulley
<3.0L>). Then go to Step
10.
NO : Go to Step 3.
STEP 3. Check the fluid level.
(1) Park the vehicle on a flat, level surface, and then start the
engine.
(2) Turn the steering wheel several times to raise the
temperature of the fluid to approximately 50
− 60°C (122 −
140
°F).
(3) With the engine running, turn the wheel all the way to the
left and right several times.
(4) Check the fluid in the oil reservoir for foaming or milkiness.
Check the difference of the fluid level when the engine is
stopped, and while it is running. If the change of the fluid
level is 5 mm (0.2 inch) or more, bleed the air from the
system. (Refer to
Q: Is the fluid foamy?
YES : Go to Step 4.
NO : Go to Step 10.
STEP 4. Check for entry of air.
Q: Has air entered?
YES : Bleed the air (Refer to
). Then go to Step 10 .
NO : Go to Step 5.
STEP 5. Check each hose for crushing or twisting.
Q: Is any hose crushed or twisted?
YES : Replace the hose (Refer to
). Then go to Step
10 .
NO : Go to Step 6.
STEP 6. Check for oil leaks.
Q: Are there oil leaks?
YES : Repair it. Then go to Step 10.
NO : Go to Step 7.
STEP 7. Check the wheel alignment (camber and caster).
Refer to GROUP 33, On-vehicle Service
− Front Wheel Align-
ment Check and Adjustment
Q: Is the alignment incorrect?
YES : Adjust it (Refer to
NO : Go to Step 8.
AC608306
With engine stopped
AC
Fluid level change: Within 5 mm (0.2 in)
With engine running
POWER STEERING DIAGNOSIS
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POWER STEERING
37-8
STEP 8. Check the gear box rack piston seal for damage.
Q: Is there damage?
YES : Replace it (Refer to
NO : Go to Step 9.
STEP 9. Check for excessive tie rod end ball joint
breakaway torque.
Refer to
.
Q: Is there fault?
YES : Replace the part(Refer to
). Then go to Step
10 .
NO : Go to Step 10.
STEP 10. Check the steering wheel operation.
Verify that the steering wheel operation is not difficult.
Q: Is the steering wheel operation difficult?
YES : Repeat from Step 1.
NO : The procedure is complete.
INSPECTION PROCEDURE 3: Rattling Noise
DIAGNOSIS
STEP 1. Check for proper oil pump and steering
gear installation.
Q: Is the oil pump and the steering gear installation
correct?
YES :
Go to Step 2.
NO :
Repair it (Refer to
). Then
go to Step 4.
STEP 2. Check for interference of other parts with
the steering column and the power steering
hoses.
Q: Is there interference?
YES :
Correct the interference. Then go to Step 4.
NO :
Go to Step 3.
STEP 3. Check for noise from inside the oil pump
or the steering gear.
Q: Is there noise?
YES :
,
). Then go to Step 4.
NO :
Go to Step 4.
STEP 4. Check for rattling noise.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
POWER STEERING DIAGNOSIS
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POWER STEERING
37-9
INSPECTION PROCEDURE 4: Shrill Noise
DIAGNOSIS
STEP 1. Check for entry of air.
Q: Is the power steering fluid foamy?
YES :
Bleed the air (Refer to
). Then go to
Step 3.
NO :
Go to Step 2.
STEP 2. Check for seizure in the oil pump.
Q: Is there seizure?
YES :
). Then
go to Step 3 .
NO :
Go to Step 3.
STEP 3. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
INSPECTION PROCEDURE 5: Squealing Noise
DIAGNOSIS
STEP 1. Check the power steering oil pump drive
belt tension.
Refer to GROUP 11A
− On-vehicle service − Drive
belt tension check
<2.4L>, GROUP 11C
−
On-vehicle service
− Generator drive belt tension
Q: Is the drive belt tension incorrect?
YES :
Adjust the belt tension (Refer to GROUP
11A
− On-vehicle service − Drive belt
tension check
<2.4L>, GROUP
11C
− On-vehicle service − Generator drive
<3.0L>). Then
go to Step 3.
NO :
Go to Step 2.
STEP 2. Check for seizure in the oil pump.
Q: Is there seizure?
YES :
). Then
go to Step 3.
NO :
Go to Step 3.
STEP 3. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
POWER STEERING DIAGNOSIS
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POWER STEERING
37-10
INSPECTION PROCEDURE 6: Hissing Noise
DIAGNOSIS
STEP 1. Check for entry of air.
Q: Is the power steering fluid foamy?
YES :
Bleed the air (Refer to
). Then go to
Step 4.
NO :
Go to Step 2.
STEP 2. Check each hose for crushing or
twisting.
Q: Is any hose crushed or twisted?
YES :
Replace the hose (Refer to
). Then
go to Step 4 .
NO :
Go to Step 3.
STEP 3. Check the steering gear for damage.
Q: Is there damage?
YES :
). Then
go to Step 4 .
NO :
Go to Step 4.
STEP 4. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
INSPECTION PROCEDURE 7: Droning Noise
DIAGNOSIS
STEP 1. Check the oil pump or oil pump bracket
installation.
Q: Is the oil pump or the oil pump bracket installation
correct?
YES :
Go to Step 2.
NO :
Repair it (Refer to
). Then
go to Step 3.
STEP 2. Check the oil pump for damage.
NOTE: If a slight "beat noise" is produced by the oil
pump when the steering wheel is turned fully and
held in that position, this is not a malfunction.
Q: Is there damage?
YES :
Replace the oil pump (Refer to
).
Then go to Step 3 .
NO :
Go to Step 3.
STEP 3. Retest the system.
Confirm that no noise is generated.
Q: Is there noise?
YES :
Repeat from Step 1.
NO :
The procedure is complete.
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