Mitsubishi Outlander XL. Manual - part 400

STEP 2. Check the spark plugs.
Refer  to  GROUP  16,  Ignition  System  -  On-vehicle  service  -
Spark Plug Check P.16c-4.

Q:Are there any abnormalities?

YES:

 Replace the spark plug. Then confirm that the

malfunction symptom is eliminated.

NO:

 Go to Step 3.

STEP 3. Check the ignition coil.

(1)

Remove the intake manifold.

(2)

Refer to GROUP 16, Ignition System - On-vehicle service -
Ignition Coil Check P.16c-3.

Q:Are there any abnormalities?

YES:

 Replace the ignition coil. Then confirm that the

malfunction symptom is eliminated.

NO:

 Check for occurrence of ignition leak. Then confirm

that the malfunction symptom is eliminated.

INSPECTION PROCEDURE 16: Knocking

M11310100296USA0000010000

COMMENT

｠

Incases such as the above, the cause is probably
that the detonation control is defective or the heat
value of the spark plug is inappropriate.

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

｠

Defective knock sensor.

｠

Incorrect heat value of the spark plug.

｠

Poor compression.

｠

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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-795

SYMPTOM PROCEDURES

STEP 1. Using the 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 items of the data list. Refer to Data List
Reference Table P.13Ab-837.

a
.

Item 32: Knock retard.

(3)

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

Q:Is the sensor operating properly?

YES:

 Go to Step 3.

NO:

 Refer to DTC P0326 - Knock Sensor Circuit range/

performance problem (Bank1) P.13Ab-413, DTC P327 - Knock
Sensor Circuit Low Input (Bank1) P.13Ab-417, DTC P328 -
Knock Sensor Circuit High Input (Bank1) P.13Ab-420, DTC
P0331 - Knock Sensor Circuit Rnge/performance problem
(Bank1) P.13Ab-423, DTC P332 - Knock Sensor Circuit Low
Input (Bank1) P.13Ab-426, DTC P333 - Knock Sensor Circuit
High Input (Bank1) P.13Ab-429.

STEP 3. Check the spark plugs.
Refer  to  GROUP  16,  Ignition  System  -  On-vehicle  service  -
Spark Plug Check P.16c-4.

Q:Are there any abnormalities?

YES:

 Replace the spark plug. Then confirm that the

malfunction symptom is eliminated.

NO:

 Go to Step 4.

STEP 4. Check the compression pressure.
Refer  to  GROUP  11A,  On-vehicle  service  -  Compression
Pressure Check P.11A-17.

13Ab-796

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

SYMPTOM PROCEDURES

Q:Is the compression pressure normal?

YES:

 Check the following items, and repair or replace the

defective items.

a
.

Check if fuel is contaminated.

b
.

Check if the foreign materials (water, kerosene, etc.) got into
fuel.

Then confirm that the malfunction symptom is eliminated.

NO:

 Repair it. Then confirm that the malfunction symptom

is eliminated.

INSPECTION PROCEDURE 17: Too high CO and HC concentration when idling

M11310100298USA0000010000

COMMENT

｠

Abnormal air/fuel ratio is suspected.

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.

｠

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. 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.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-797

SYMPTOM PROCEDURES

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. Check the ignition timing.
Refer  to  GROUP  11A,  On-vehicle  Service  -  Ignition  Timing
Check P.11A-14.

Q:Is the ignition timing normal?

YES:

 Go to Step 4.

NO:

 Check for installed conditions of the timing belt.

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.

(2)

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

a
.

Item 06: Engine Coolant Temperature Sensor.

b
.

Item 05: Intake Air Temperature Sensor.

(3)

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

Q:Are they operating properly?

YES:

 Go to Step 5.

NO:

 Repair or replace it. Then confirm that the

malfunction symptom is eliminated.

STEP 5. Check the fuel pressure.
Refer to Fuel Pressure Test P.13Aa-17.

Q:Is the fuel pressure normal?

YES:

 Go to Step 6.

NO:

 Repair or replace it. Then confirm that the

malfunction symptom is eliminated.

13Ab-798

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

SYMPTOM PROCEDURES