Mitsubishi Outlander XL. Manual - part 396

INSPECTION PROCEDURE 8: Idle speed is high (improper idle speed).

M11310100285USA0000010000

COMMENT

｠

In such cases as the above, the cause is probably
that the intake air volume during idle is too great.

TROUBLESHOOTING HINTS (The most likely
causes for this case:)

｠

Malfunction  of  the  engine  coolant  temperature
sensor signal.

｠

Malfunction of the accelerator pedal position sensor
(main) signal.

｠

Malfunction of the accelerator pedal position sensor
(sub) signal.

｠

Malfunction of the A/C switch signal.

｠

Malfunction of the power steering pressure sensor
signal.

｠

Malfunction of the purge control system.

｠

Malfunction of the ECM.

 

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958 to the data link connector.

(2)

Turn the ignition switch to the "ON" position.

(3)

Read the DTC.

(4)

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

Q:Is any DTC set?

YES:

 Refer to Diagnostic Trouble Code Chart P.13Ab-44.

NO:

 Go to Step 2.

STEP 2. Using scan tool MB991958, check data list.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check the following item in the data list. Refer to Data List
Reference Table P.13Ab-837.

a
.

Item 06: Engine Coolant Temperature Sensor.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-779

SYMPTOM PROCEDURES

b
.

Item 11: Accelerator pedal position sensor (main)

c
.

Item 12: Accelerator pedal position sensor (sub)

d
.

Item 76: A/C switch

e
.

Item 24: Power steering pressure sensor

(3)

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

Q:Is the sensor operating properly?

YES:

 Refer to GROUP 17, Emission Control System -

Evaporative Emission Purge Solenoid Check P.17c-12.

NO:

 Repair or replace it. Then confirm that the

malfunction symptom is eliminated.

INSPECTION PROCEDURE 9: Idle Speed Is Low (improper idle speed).

M11310100286USA0000010000

COMMENT

｠

In cases such as the above, the cause is probably
that the intake air volume during idle is too small.

TROUBLESHOOTING HINTS (The most likely
causes for this case:)

｠

Malfunction  of  the  engine  coolant  temperature
sensor signal.

｠

Malfunction of the torque converter.

｠

Malfunction of the ECM.

 

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

13Ab-780

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

SYMPTOM PROCEDURES

STEP 1. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958 to the data link connector.

(2)

Turn the ignition switch to the "ON" position.

(3)

Read the DTC.

(4)

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

Q:Is any DTC set?

YES:

 Refer to Diagnostic Trouble Code Chart P.13Ab-44.

NO:

 Go to Step 2.

STEP 2. Using scan tool MB991958, check data list.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check the following item in the data list. Refer to Data List
Reference Table P.13Ab-837.

a
.

Item 06: Engine Coolant Temperature Sensor.

(3)

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

Q:Is the sensor operating properly?

YES:

 Refer to GROUP 23A, Automatic Transaxle Diagnosis -

Torque Converter Stall Test P.23A-21.

NO:

 Repair or replace it. Then confirm that the

malfunction symptom is eliminated.

INSPECTION PROCEDURE 10: When the engine is cold, it stalls at idle (die out).

M11310100287USA0000010000

COMMENT

｠

In such cases as the above, the air/fuel mixture may
be inappropriate when the engine is cold.

TROUBLESHOOTING HINTS (The most likely
causes for this case:)

｠

Malfunction of the fuel pump system.

｠

Malfunction of the ignition system.

｠

Poor compression

｠

Malfunction of the EGR system

｠

Improper operation of the PCV valve.

｠

Improper engine oil viscosity

｠

Malfunction of the ECM.

 

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-781

SYMPTOM PROCEDURES

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

STEP 1. Check if the EGR valve sounds during initialization.

Q:Is the initialization sound heard in the EGR valve?

YES:

 Go to Step 2.

NO:

 Refer to GROUP 17, Emission Control - EGR Valve

(Stepper Motor) Check P.17c-14.

STEP 2. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

ZC501967

AC404789

ZC5019680000

MB991824

MB991827

MB991910

Data link

connector

To prevent damage to scan tool MB991958, always turn the
ignition  switch  to  the  "LOCK"  (OFF)  position  before
connecting or disconnecting scan tool MB991958.

(1)

Connect scan tool MB991958 to the data link connector.

(2)

Turn the ignition switch to the "ON" position.

(3)

Read the DTC.

(4)

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

Q:Is any DTC set?

YES:

 Refer to Diagnostic Trouble Code Chart P.13Ab-44.

NO:

 Go to Step 3.

STEP 3. Using scan tool MB991958, check actuator test
items 1, 2, 3, 4, 5, 6: Injector.

(1)

Turn the ignition switch to the "ON" position.

(2)

Check following items in the actuator test. Refer to Actuator
Test Reference Table P.13Ab-857.

a
.

Item 01: Injector.

(3)

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

Q:Are they operating properly?

YES:

 Go to Step 4.

NO:

 Repair or replace it. Then confirm that the

malfunction symptom is eliminated.

STEP 4. Using scan tool MB991958, check data list.

(1)

Turn the ignition switch to the "ON" position.

13Ab-782

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

SYMPTOM PROCEDURES