Mitsubishi Eclipse / Eclipse Spyder (2000-2002). Service and repair manual — part 193

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-471

AK000094AB

M

IGNITION COIL

ACX02476

N

AC

HEATED OXYGEN
SENSOR (FRONT)

ACX02501

O

FAN CONTROLLER

AC

AK000075AB

P

PARK/NEUTRAL POSITION SWITCH

ACX02480

Q

VOLUME AIR
FLOW SENSOR

AD

AK000072AC

ENGINE SPEED
DETECTION CONNECTOR
(INSPECTION CONNECTOR)

R

ACX02447

S

AC

DATA LINK CONNECTOR

ACX02509

T

AD

ECM
OR
PCM

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-472

THROTTLE BODY (THROTTLE VALVE AREA)
CLEANING

M1131001000105

1. Start the engine and warm it up until the coolant is heated to

80

°

C (176

°

F) or higher. Then stop the engine.

2. Remove the air intake hose from the throttle body.

CAUTION

Do not allow cleaning solvent to enter the bypass passage.
3. Plug the bypass passage inlet (arrow) of the throttle body.

4. Spray cleaning solvent into the valve through the throttle

body intake port and leave it for approximately five minutes.

5. Start the engine, rev it several times and then idle it for

about one minute. If the idling speed becomes unstable (or if
the engine stalls) due to the bypass passage being plugged,
slightly open the throttle valve to keep the engine running.

6. If the throttle valve deposits are not removed, repeat steps 4

and 5.

7. Unplug the bypass passage inlet.

8. Attach the air intake hose.

9. Use the scan tool to erase any diagnostic trouble code.

10.Adjust the basic idle speed. (Refer to

P.13A-474

.)

ACX02494

U

AC

FUEL TANK
DIFFERENTIAL
PRESSURE
SENSOR

(TOP OF FUEL TANK)

ACX02495

V

AC

HEATED OXYGEN
SENSOR (REAR)

ACX02516

W

AD

EVAPORATIVE EMISSION
VENTILATION SOLENOID

FUEL TANK

AK000112AB

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-473

WARNING

Battery posts, terminals and related accessories
contain lead and lead compounds. WASH HANDS
AFTER HANDLING.

NOTE: If the engine hunts while idling after adjustment of
the basic idle speed, disconnect the negative cable from the
battery for 10 seconds or more, and then reconnect it and
run the engine at idle for about 10 minutes after the engine
is warmed up.

THROTTLE POSITION SENSOR ADJUSTMENT

M1131001100038

Required Special Tools:
MB991502: Scan Tool (MUT-II)
MB991348: Test Harness Set

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting the scan tool MB991502.

1. Connect scan tool MB991502 to the data link connector.

When not using scan tool follow the steps below.

(1) Disconnect the throttle position sensor connector, and

connector the special tool MB991348 in between. (All
terminals should be connected.)

(2) Connect a digital voltmeter between throttle position

sensor terminal 3 (sensor output) and terminal 1 (sensor
ground).

2. Turn the ignition switch to the "ON" position (but do not start

the engine).

3. Check the throttle position sensor output voltage.

Standard value: 535

−

735 mV

AKX01177

16 PIN

MB991502

AB

ACX02472

THROTTLE
POSITION
SENSOR

AD

AKX01636AB

TERMINAL 3
(SENSOR OUTPUT)

TERMINAL 1
(SENSOR
GROUND)

MB991348

ON-VEHICLE SERVICE

TSB Revision

MULTIPORT FUEL INJECTION (MFI) <2.4L ENGINE>

13A-474

4. If not within the standard value range, adjust by loosening

throttle position sensor mounting bolts and turning the
throttle position sensor body. After adjusting, tighten the
bolts securely.

5. Turn the ignition switch to the "LOCK" (OFF) position.

6. Disconnect scan tool MB991502. When the scan tool is not

used, remove special tool MB991348, and connect the
throttle position sensor connector.

BASIC IDLE SPEED ADJUSTMENT

M1131001800101

Required Special Tool:
MB991502: Scan Tool (MUT-II)

NOTE: The standard idle speed has been adjusted with the
speed adjusting screw (SAS), by the manufacturer, and there
should be no need for readjustment.

NOTE: If the adjustment has been changed by mistake, the idle
speed may become too high or the idle speed may drop too low
when loads A/C, defogger, etc. are placed on the engine. If this
occurs, adjust by the following procedure.

NOTE: The adjustment, if made, should be made after first
confirming that the spark plugs, the injectors, the idle air control
motor, compression, etc., are all normal.
1. The vehicle should be prepared as follows before the

inspection and adjustment.

•

Engine coolant temperature: 80

−

95

°

C(176

−

203

°

F

)

•

Lights, electric cooling fan and accessories: OFF

•

Transaxle: Neutral (A/T for "P" range)

CAUTION

To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOCK" (OFF) position before
connecting or disconnecting scan tool MB991502.
2. Connect scan tool MB991502 to the data link connector (16-

pin).

NOTE: When scan tool MB991502 is connected, the
diagnostic test mode control terminal should be grounded.

3. Start the engine and run at idle.

4. Select the item number 30 of the scan tool Actuator test.

NOTE: Use the scan tool to hold the IAC motor at the basic
step to adjust the basic idle speed.

5. Check the idle speed.

Standard value: 700

±

50 r/min

NOTE: The engine speed may be 20 to 100 r/min lower than
indicated above for a new vehicle [driven approximately 500
km (300 mile) or less], but no adjustment is necessary.

AK000113AB

AKX01177

16 PIN

MB991502

AB