Mitsubishi Outlander GS45X. Manual - part 471

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-15

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.
12.Disconnect scan tool MB991958 from the data link 

connector.

CURB IDLE SPEED CHECK

M1111003502519

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.

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.

AK800400

Data link
connector

MB991827

MB991824 

MB991910

AC

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-16

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

of the ignition coil No. 1.

4. Start the engine.
5. Run the engine at idle for 2 minutes.
6. Check 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. 

7. Check the idle speed. Select item number 2 and take a 

reading of the idle speed.

Curb idle speed: 650 

± 100 r/min

NOTE: The idle speed is controlled automatically by the idle 
air control system.

8. If the idle speed is outside the standard value, refer to 

GROUP 13A, Multiport Fuel Injection (MFI) <2.4L Engine> 

− 

Multiport Fuel Injection (MFI) Diagnosis 

− Symptom Chart 

P.13A-54

.

9. Remove the timing light.

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.
10.Disconnect scan tool MB991958 from the data link 

connector.

IDLE MIXTURE CHECK

M1111002101827

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

• Transaxie: 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.

AK604618

3

2

1

3

2

1

AB

No. 1 ignition coil

Equipment side connector

Power supply line
(terminal No. 3)

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-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. 3) 

of the ignition coil No. 1.

4. Start the engine and let it run 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 stabilized. 

6. Run the engine and 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 there is a deviation from the standard value, inspect the 

MFI system  (Refer to GROUP 13A 

− Multiport Fuel Injection 

(MFI) <2.4L Engine> 

− Multiport Fuel Injection (MFI) 

Diagnosis 

− Symptom Chart 

P.13A-54

)

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

AK800400

Data link
connector

MB991827

MB991824 

MB991910

AC

AK604618

3

2

1

3

2

1

AB

No. 1 ignition coil

Equipment side connector

Power supply line
(terminal No. 3)

ON-VEHICLE SERVICE

TSB Revision

ENGINE MECHANICAL <2.4L ENGINE>

11A-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

M1111002603293

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 all of the injector connectors.

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., after the 

engine has been cranked, check that no foreign material is 
adhering to the shop towel.

5. Set compression gauge to one of the spark plug holes.
6. Crank the engine with the throttle valve fully open and 

measure the compression pressure.

Standard value (at engine speed of 200 r/min): 1,440 

kPa (209 psi)

Limit (at engine speed of 200 r/min): Minimum 1,000 

kPa (145 psi)

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

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

Limit: Maximum 98 kPa (14 psi)

AK502603AE

Injector 
connectors

AK502604AE

Compression gauge