Mitsubishi Outlander GS45X. Manual — part 495

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-17

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.

3. Set the timing light to the power supply line (terminal No. 1)

of the ignition coil No. 2.
NOTE: The power supply line is looped and also longer than
the other ones.

4. Start the engine and run it at idle.
5. Check that the actual ignition timing is at the standard value.

Standard value: Approximately 10

° BTDC

NOTE: The ignition timing fluctuates about

±

7

°

, even under

normal operating condition.
NOTE: It is automatically further advanced by about 5

°

from

10

°

Before Top Dead Center at higher altitudes.

NOTE: Wait till approximately 1 minute passes after the engine
started, and check the ignition timing when the engine stabi-
lized.
6. Increase the engine speed to 2,000

− 3,000 r/min for 2

minutes.

7. Set the CO, HC tester.
8. Check the CO contents and the HC contents at idle.

Standard value:

CO contents: 0.5% or less
HC contents: 100 ppm or less

9. If the CO and HC contents do not remain inside the standard

value, refer to GROUP 13B, Multiport Fuel Injection (MFI)
<3.0L Engine>

− Multiport Fuel Injection (MFI) Diagnosis −

Symptom Chart

P.13B-55

.

10.Remove the CO, HC tester and timing light.

AK800400

Data link
connector

MB991827

MB991824

MB991910

AC

AK700018

Ignition timing pickup loop

No .2 ignition coil

AB

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-18

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.
11.Disconnect scan tool MB991958 from the data link

connector.

COMPRESSION PRESSURE CHECK

M1111002603301

Required Special Tool:
MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

1. Before inspection, check that the engine oil, starter and

battery are normal. Also, set the vehicle in the following
condition:

• Engine coolant temperature: 80 − 95°C (176 − 203°F)

• Lights and all accessories: OFF

• Transaxle: P range

NOTE: On vehicles for Canada, the headlight, taillight, etc.
remain lit even when the lighting switch is in "OFF" position
but this is no problem for checks.

2. Remove all of the ignition coils and spark plugs.
3. Disconnect the injector connector.

WARNING

Keep your distance from the spark plug hole when
cranking. Oil, fuel, etc., may spray out from the spark
plug hole and may cause serious injury.

4. Cover the spark plug hole with a shop towel etc., during

cranking. After the engine has been cranked, check for
foreign material adhering to the shop towel.

5. Set compression gauge to one of the spark plug holes.
6. Crank the engine and measure the compression pressure.

Standard value (at engine speed of 200 r/min): 1,650
kPa (239 psi)
Minimum limit (at engine speed of 200 r/min): 1,150
kPa (167 psi)

7. Measure the compression pressure for all the cylinders, and

check that the pressure differences of the cylinders are
below the limit.

Limit: 98 kPa (14 psi)

AK703815

Injector connector

AD

Injector connector

AK700020

Compression
gauge

AB

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-19

8. If there is a cylinder with compression or a compression

difference that is outside the limit, pour a small amount of
engine oil through the spark plug hole, and repeat the
operations in steps 5 to 7.

(1) If the compression increases after oil is added, the cause

of the malfunction is a worn or damaged piston ring
and/or cylinder inner surface.

(2) If the compression does not rise after oil is added, the

cause is a burnt or defective valve seat, or pressure is
leaking from the gasket.

9. Connect the injector connector.
10.Install the spark plugs and ignition coils.
11.Use the scan tool MB991958 to erase the diagnostic trouble

codes.
NOTE: This will erase the diagnostic trouble code resulting
from the injector connector being disconnected.

12.Select "Mode $0A" from "Special Function" of Scan tool

MB991958. Check whether the permanent-DTC (PDTC) is
stored or not. If stored, clear the PDTC. (Refer to GROUP
13B

− Multiport Fuel Injection (MFI) <3.0 L Engine> −

Multiport Fuel Injection (MFI) Diagnosis

− Diagnostic

Function

P.13B-11

)

MANIFOLD VACUUM CHECK

M1111002702026

Required Special Tool:
MB991958: Scan Tool (M.U.T.-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: M.U.T.-III USB Cable

• MB991910: M.U.T.-III Main Harness A

1. Before inspection, set the vehicle in the following condition:

• Engine coolant temperature: 80 − 95°C (176 − 203°F)

• Lights and all accessories: OFF

• Transaxle: P range

NOTE: On vehicles for Canada, the headlight, taillight, etc.
remain lit even when the lighting switch is in "OFF" position
but this is no problem for checks.

AK800400

Data link
connector

MB991827

MB991824

MB991910

AC

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <3.0L ENGINE>

11C-20

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.

3. Disconnect the ventilation hose from the positive crankcase

ventilation (PCV) valve, and then connect a vacuum gauge
to the ventilation hose. Plug the PCV valve.

4. Start the engine and check that idle speed is approximately

600 r/min.

5. Check the intake manifold vacuum.

Limit: Minimum 60 kPa (18 in Hg)

6. Turn off the ignition switch.
7. Remove the vacuum gauge and then connect the ventilation

hose to the PCV valve.

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.
8. Disconnect scan tool MB991958 from the data link

connector.

LASH ADJUSTER CHECK

M1111002901061

If an abnormal noise (chattering noise) suspected to be caused
by malfunction of the lash adjuster is produced immediately
after starting the engine and does not disappear, perform the
following check.
NOTE: The lash adjuster is installed in exhaust side only.
NOTE: Parking the vehicle on a grade for a long time may
decrease oil in the lash adjuster, causing air to enter the high
pressure chamber when starting the engine.

AK800400

Data link
connector

MB991827

MB991824

MB991910

AC

AK700021

Ventilation hose

Plug

AB

Vacuum gauge

Positive crankcase
ventilation valve