2004 MITSUBISHI ENDEAVOR power steering

FAN CONTROL RELAY CONTINUITY CHART

IDLE-UP OPERATION CHECK 1. Before inspection and adjustment, set vehicle in the following condition:
Engine coolant temperature: 80 - 90 °C (176.0 - 194.0 °F) Lights, electric cooling fan and accessories: OFF Transmission: Neutral ("N" or "P" position) Steering wheel: Straightforward
2. Check whether or not the idle speed is the standard value.
Refer to
CURB IDLE SPEED CHECK
.
Standard value: 680 +/- 50 r/min

3. Turn on the air conditioning switch and the blower speed selection dial. Engine
idling speed should be within the standard value:
Standard value

At low pressure: 680 +/- 50 r/min

At middle pressure: 730 +/- 50 r/min

At high pressure: 750 +/- 50 r/min

BATTERY VOLTAGE
TESTER
CONNECTION
SPECIFIED
CONDITION
Not applied
2 - 4
Open circuit
Connect terminal 1 to the
positive battery terminal

Connect terminal 3 to the
negative battery terminal
2 - 4
Less than 2 ohms
NOTE: The powertrain control module determines whether the
A/C load is low or high according to the output signal

2004 Mitsubishi Endeavor LS
2004 HVAC Heater Air Conditioning, Ventilation - Endeavor

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

INTRODUCTION TO POWER STEERING DIAGNOSISHydraulic power steering is used for all vehicles. Faults in the power steering can
include excessive play of the steering wheel, difficult steering wheel operation,
noise, vibration, and oil leaks, etc. Possible causes of these faults can include
defects in the gear box, oil pump or steering linkage. POWER STEERING DIAGNOSIS TROUBLESHOOTING STRATEGY Use these steps to plan your diagnostic strategy. If you follow them carefully, you
will be sure that you have exhausted most of the possible ways to find a power
steering fault.
1. Gather information from the customer.
2. Verify that the condition described by the customer exists.
3. Find the malfunction by following the Symptom Chart.
4. Verify malfunction is eliminated. SYMPTOM CHART
2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor

Fig. 2: Symptom Chart

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
SYMPTOM PROCEDURES INSPECTION PROCEDURE 1: EXCESSIVE PLAY OF STEERING WHEEL DIAGNOSIS
STEP 1. Check for looseness at the steering shaft coupling section and at
the steering wheel linkage.
Q: Is there any looseness?
YES: Repair or replace the part. Then go to Step 3 .
NO: Go to Step 2.
STEP 2. Check the steerin
g wheel free
play.

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

Fig. 3: Checking Steering Wheel Free Play

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 3. Check the steering wheel play.
Verify that the steering wheel play is not excessive.
Q: Is the steering wheel play excessive?

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

YES: Go to Step 4.
NO: Bleed the air (Refer to POWER STEERING SYSTEM AIR BLEEDING
). Then go to Step 9 .
Fig. 4: Checking Fluid Level (Difficult Steering Wheel Operation)

Courtesy of MITSUBISHI MOTOR SALES OF AMERICA.
STEP 4. Check each hose for crushing or twisting.
Q: Is any hose crushed or twisted?
YES: Re
pair or re
place the hose. Then
go to Ste
p 9 .

2004 Mitsubishi Endeavor LS
2004 STEERING Power Steering - Endeavor