Mitsubishi Eclipse. Manual — part 640
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1103
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
.)
WARNING
Battery posts, terminals and related accessories con-
tain 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
M1131001100533
Required Special Tools:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991911: Main Harness B
• MB991348: Test Harness
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1104
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
1. Connect scan tool MB991958 to the data link connector.
When not using the scan tool, proceed as follows.
(1) Disconnect the throttle position sensor connector, and
connect the special tool MB991348 in between. (All
terminals should be connected.)
(2) Connect a digital voltmeter between throttle position
sensor terminal No. 3 (sensor output) and terminal No. 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 millivolts
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 MB991958, and connect the throttle
position sensor connector. When the scan tool is not used,
remove special tool MB991348, and connect the throttle
position sensor connector.
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
ACX02484
THROTTLE POSITION
SENSOR
AE
AKX01636AB
TERMINAL 3
(SENSOR OUTPUT)
TERMINAL 1
(SENSOR
GROUND)
MB991348
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1105
BASIC IDLE SPEED ADJUSTMENT
M1131001800587
Required Special Tool:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991911: Main Harness B
NOTE: The standard idling speed has been adjusted with the
speed adjusting screw (SAS), by the manufacturer. 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 con-
firming 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 ("P" range on vehicle with A/T)
CAUTION
To prevent damage to scan tool MB991958, always turn the
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
2. Connect scan tool MB991958 to the data link connector
(16-pin).
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.
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.
NOTE: If the engine stalls or the engine speed is low even
though the vehicle has been driven approximately 500 km
(300 mile) or more, it is probable that deposits are adhered
to the throttle valve, so clean it. (Refer to
.)
Standard value: 700
± 50 r/min
AK300810
AB
MB991911
16-PIN
MB991827
MB991824
ON-VEHICLE SERVICE
TSB Revision
MULTIPORT FUEL INJECTION (MFI) <3.0L>
13B-1106
6. If not within the standard value range, turn the speed
adjusting screw (SAS) to make the necessary adjustment.
7. Press the scan tool clear key, and release the IAC motor
Actuator test mode.
8. Turn the ignition switch to the "LOCK" (OFF) position.
NOTE: Unless the IAC motor is released, the Actuator test
mode will continue for 27 minutes.
9. Disconnect scan tool MB991958.
10.Start the engine again and let it idle for about 10 minutes.
Check that the idling condition is normal.
FUEL PRESSURE TEST
M1131001900506
Required Special Tools:
• MB991958: Scan Tool (MUT-III Sub Assembly)
• MB991824: V.C.I.
• MB991827: USB Cable
• MB991911: Main Harness B
• MB991637: Fuel Pressure Gauge Set
• MD998709: Adaptor Hose
• MD998742: Hose Adaptor
1. Release residual pressure from the fuel line to prevent fuel
spray. (Refer to
WARNING
To prevent a fire, cover the hose connection with
shop towels to prevent splashing of fuel that could be
caused by some residual pressure in the fuel pipe
line.
2. Disconnect the fuel high-pressure hose at the fuel rail side.
3. Assemble the fuel pressure measurement tools as follows.
<When using the fuel pressure gauge>
1. Remove the union joint and bolt from special tool
MD998709 (adaptor hose) and instead attach special tool
MD998742 (hose adaptor) to the adaptor hose.
2. Place a suitable O-ring or gasket on the assembled special
tools MD998709 and MD998742 and install the fuel pres-
sure gauge.
3. Install the assembled fuel pressure measurement tools
between the fuel rail and fuel high-pressure hose.
AK000115AB
SPEED ADJUSTING SCREW
AK000117AB
HIGH-PRESSURE
FUEL HOSE
AKX01457AB
FUEL PRESSURE
GAUGE
O-RING OR GASKET
MD998709
MD998742
HIGH-PRESSURE
FUEL HOSE
FUEL
RAIL
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