check engine MITSUBISHI ENDEAVOR 2004 Service Repair Manual

2004 STEERING
Power Steering - Endeavor
GENERAL DESCRIPTION Power steering has been adopted in all vehicles to make the steering system easier
to handle.
A 4-spoke steering wheel is used. A steering column has a shock absorbing mechanism and a tilt steering
mechanism. A rack and pinion steering gear is used. An oil pump responsive to engine RPM is used, which, with tuning for a rigid
gear box mount, improves steering stability at high speeds. The separate plastic resin oil reservoir reduces weight and makes fluid level
checking easier.
Fig. 1: Identifying Power Steering Components

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
POWER STEERING DIAGNOSIS
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor


2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

1. With the engine running (hydraulic operation), set the front wheels
straight ahead.
2. Slightly move the steering wheel in both directions, and measure the play
on the steering wheel circumference before the wheels start to move.
Limit: 30 mm (1.2 inch)
3. If the free play exceeds the limit, set the steering wheel straight ahead with
the engine stopped. Apply approximately 5 N (1.1 pound) to the steering
circumference and check the play.
Standard value (steering wheel play with engine stopped): 10 mm (0.4
inch) or less
Q: Does the play exceed the standard value?
YES: Remove the steering gear box (Refer to POWER STEERING
GEAR BOX AND LINKAGE
) and check the total pinion torque (Refer
to STEERING GEAR TOTAL PINION TORQUE CHECK
). Then go
to Step 3.
NO
: Go to Ste
p 3.

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

YES: Repeat from Step 1 .
NO: The procedure is complete.
INSPECTION PROCEDURE 2: DIFFICULT STEERING WHEEL OPERATION (INSUFFICIENT POWER ASSIST) DIAGNOSIS
STEP 1. Check the drive belt for damage.
Q: Is the drive belt damaged?
YES: Replace the drive belt. Then go to Step 9 .
NO: Go to Step 2.
STEP 2. Check the power steering oil pump drive belt tension.
Refer to 7. DRIVE BELTS (FOR GENERATOR, POWER STEERING OIL PUMP AND AIR CONDITIONING) (CHECK)
.
Q: Is the power steering oil pump drive belt tension within the standard
value?
YES: Go to Step 3.
NO: Adjust the tension. (Refer to 7. DRIVE BELTS (FOR
GENERATOR, POWER STEERING OIL PUMP AND AIR CONDITIONING) (CHECK)
). Then go to Step 9 .
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.
Q: Is the check result OK?

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

STEP 1. 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.
Q: Is the check result OK?
YES: Go to Step 2.
NO: Bleed the air (Refer to POWER STEERING SYSTEM AIR
BLEEDING
). Then
go to Ste
p 3.

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

STEP 1. 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.
Q: Is the check result OK?
YES: Go to Step 2.
NO: Bleed the air (Refer to POWER STEERING SYSTEM AIR
BLEEDING
). Then
go to Ste
p 4 .

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

NO: The procedure is complete.
INSPECTION PROCEDURE 9: VIBRATION DIAGNOSIS
STEP 1. Check the tires for out-of-balance.
Q: Is the check result OK?
YES: Go to Step 2.
NO: Balance the tires (Refer to WHEEL BALANCE ACCURACY
).
Then go to Step 4 .
STEP 2. 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.
Q: Is the check result OK?
YES: Go to Step 3.
NO: Bleed the air (Refer to POWER STEERING SYSTEM AIR
BLEEDING
). Then go to Step 4 .
NOTE: A slight vibration may be felt when the stationary steering
effort is made due to the condition of the road surface. To
check whether the vibration actually exists or not, test-drive
the vehicle on a dry concrete or asphalt surface. A very
slight amount of vibration is not a malfunction.
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

wheel circumference and check the play.
Standard value (steering wheel play with the engine stopped): 10 mm (0.4
inch) or less
5. If the play exceeds the standard value, remove the steering gear (Refer to
POWER STEERING GEAR BOX AND LINKAGE
.) and check the total
pinion torque (Refer to STEERING GEAR TOTAL PINION TORQUE
CHECK
.).
STEERING ANGLE CHECK 1. Place the front wheel on a turnin
g radius
gauge an
d measure the steerin
g an
gle.
CAUTION: On vehicles with ASC, if the steering angle is
adjusted, always carry out steering wheel sensor
calibration (Refer to STEERING WHEEL SENSOR
CALIBRATION
). This is necessary because the
TCL/ASC-ECU should update the steering neutral
point.

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

the straight ahead position.
2. Start the engine and allow to idle.
Standard value: 700 +/- 100 r/min
3. Attach a spring scale to the outer circumference of the steering wheel and
measure the steering force required to turn the steering wheel from the straight
ahead position to the left and right (within a range of 1.5 turns). Also check to
be sure that there is no significant change in the required steering effort.
Standard value:
Steering effort: 30 N (6.7 lb.) or less
Fluctuation allowance: 5.9 N (1.33 lb.) or less
4. If the measured value exceeds the standard value, refer to INSPECTION PROCEDURE 2: DIFFICULT STEERING WHEEL OPERATION (INSUFFICIENT POWER ASSIST)
.

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

1. Park the vehicle on a flat, level surface.
2. Start the engine, and then 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 fluid contains air or has milky appearance, or the fluid level fluctuate by
5 mm (0.2 inch) or more, power steering system air bleeding should be done.
Refer to POWER STEERING SYSTEM AIR BLEEDING
.
Fig. 22: Checking Fluid Level

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
FLUID REPLACEMENT
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

2. Bleed air, then turn the steering wheel several times while the vehicle is not
moving so that the temperature of the fluid rises to approximately 50 - 60°C
(122 - 140°F).
3. Start the engine and idle it at 700 +/- 100 r/min.
4. Fully close the shut-off valve of the pressure gauge and measure the oil pump
relief pressure to confirm that it is within the standard value range. Open it
again immediately after checking the pressure.
Standard value: 9.3 - 9.8 MPa (1,349 - 1,421 psi)
CAUTION: The pressure gauge shut-off valve must not
remain closed for more than 10 seconds.

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor