Mitsubishi Outlander XL. Manual - part 299

Check Conditions

｠

Engine speed is between 440 and 6,500 r/min.

｠

Engine  coolant  temperature  is  higher  than  -10°C
(14°F).

｠

Barometric  pressure  is  higher  than  76  kPa  (22.4
in.Hg).

｠

Volumetric efficiency is between 30 and 60 percent.

｠

Adaptive  learning  is  complete  for  the  vane  which
generates a crankshaft position signal.

｠

While the engine is running, excluding gear shifting,
deceleration, sudden acceleration/deceleration and
A/C compressor switching.

｠

The throttle deviation is -0.06 V/10 ms to +0.06 V/
10 ms.

Judgement Criteria (change in the angular
acceleration of the crankshaft is used for misfire
detection).

｠

Misfire has occurred more frequently than allowed
during the last 200 revolutions [when the catalyst
temperature is higher than 1,000°C (1,832°F)].

or

｠

Misfire has occurred in 15 or more of the last 1,000
revolutions (corresponding to 1.5 times the limit of
emission standard).

OBD-II DRIVE CYCLE PATTERN
Refer to Diagnostic Function - OBD-II Drive Cycle -
Pattern 15 P.13Ab-8.

TROUBLESHOOTING HINTS (The most likely
causes for this code to be set are:)

｠

Ignition system related part(s) failed.

｠

Poor crankshaft position sensor.

｠

Incorrect air/fuel ratio.

｠

Spark plug failed.

｠

Low compression pressure.

｠

Skipping of timing belt teeth.

｠

EGR valve (stopper motor) failed.

｠

ECM failed.

 

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

｠

MB992110: Power Plant ECU Check Harness

STEP 1. Check the EGR system
Refer to GROUP 17, Emission Control System - Exhaust Gas
Recirculation (EGR) System - General Information P.17c-13.

Q:Are there any abnormalities?

YES:

 Replace the EGR valve (stopper motor). Then go to

Step 9.

NO:

 Go to Step 2.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-391

DIAGNOSTIC TROUBLE CODE PROCEDURES

STEP 2. Using scan tool MB991958, check data list item 2:
Crankshaft Position Sensor.

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)

Start the engine and run at idle.

(3)

Set scan tool MB991958 to the data reading mode for item
2, Crankshaft Position Sensor.

(4)

Check the waveform of the crankshaft position sensor while
keeping the engine speed constant.

｠

The pulse width should be constant.

Q:Is the sensor operating properly?

YES:

 Go to Step 3.

NO:

 Refer to, DTC P0335 - Crankshaft Position Sensor

Circuit Malfunction P.13Ab-433.

STEP 3. Using scan tool MB991958, check data list item 26
<bank 1> and 27 <bank2>: Long-Term Fuel Trim.

(1)

Start the engine and run at idle.

(2)

Set scan tool MB991958 to the data reading mode for item
26<bank 1> and 27 <bank2>, Long-Term Fuel Trim.

｠

The fuel trim should be between -12.5 and +12.5 percent
when the engine is 2,500 r/min (during closed loop) after
the engine is warmed.

Q:Is the specification normal?

YES:

 Go to Step 4.

NO:

 Refer to, DTC P0171 - System too Lean (bank 1) P.

13Ab-293, DTC P0172 - System too Rich (bank 1) P.
13Ab-300, DTC P0174 - System too Lean (bank 2) P.
13Ab-304, DTC P0175 - System too Rich (bank 2) P.
13Ab-311.

STEP 4. Using scan tool MB991958, check data list item 28
<bank 1> and 29 <bank2>: Short-Term Fuel Trim.

(1)

Start the engine and run at idle.

(2)

Set scan tool MB991958 to the data reading mode for item
28<bank 1> and 29 <bank2>, Short-Term Fuel Trim.

｠

The fuel trim should be between -7.4 and 7.4 percent when
the  engine  is  2,500  r/min  (during  closed  loop)  after  the
engine is warmed.

Q:Is the specification normal?

YES:

 Go to Step 5.

NO:

 Refer to, DTC P0171 - System too Lean (bank 1) P.

13Ab-293, DTC P0172 - System too Rich (bank 1) P.
13Ab-300, DTC P0174 - System too Lean (bank 2) P.

13Ab-392

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

13Ab-304, DTC P0175 - System too Rich (bank 2) P.
13Ab-311.

STEP 5. Check the each ignition coil spark.

(1)

Remove the intake manifold.

(2)

Remove the ignition coil.

AA00

ZK603365

Spark plug

(3)

Remove the spark plug and connect to the ignition coil.

(4)

Ground the spark plug side electrode securely.

｠

When the engine is cranked, the spark plug should spark.

Q:Did it spark?

YES:

 Go to Step 7.

NO:

 Go to Step 6.

STEP 6. Check the spark plugs.
Refer  to  GROUP  16,  Ignition  System  -  On-vehicle  Service  -
Spark Plug Check And Cleaning P.16c-4.

Q:Is the spark plug normal?

YES:

 Refer to, INSPECTION PROCEDURE 24 - Ignition Circuit

System P.13Ab-826.

NO:

 Replace the faulty spark plug. Then go to Step 9.

STEP 7. Check the following items.

(1)

Check the following items, and repair or replace the defective
component.

a
.

Check for skipped timing belt teeth.

b
.

Check compression.

c
.

EGR valve failed.

Q:Are there any abnormalities?

YES:

 Repair it. Then go to Step 9.

NO:

 Go to Step 8.

STEP 8. Check the trouble symptoms.

(1)

Carry out a test drive with the drive cycle pattern. Refer to
Pattern 15 P.13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0300 set?

YES:

 Replace the ECM. When the ECM is replaced, register

the ID code. Refer to GROUP 42B, ID Code Registration
Judgment Table <Vehicles with KOS> P.42B-12or GROUP
42C, ID Code Registration Judgment Table <Vehicles with
WCM> P.42C-8. Then go to Step 9.

NO:

 It can be assumed that this malfunction is

intermittent. Refer to GROUP 00, How to Use
Troubleshooting/Inspection Service Points - How to Cope
with Intermittent Malfunctions P.00-15.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-393

DIAGNOSTIC TROUBLE CODE PROCEDURES

STEP 9. Test the OBD-II drive cycle.

(1)

Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic  Function  -  OBD-II  Drive  Cycle  -  Pattern  15  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0300 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

DTC P0301: Cylinder 1 Misfire Detected

M11310100218USA0000010000

TECHNICAL DESCRIPTION

｠

If a misfire occurs while the engine is running, the
engine speed changes for an instant.

｠

The ECM checks for such changes in engine speed.

DESCRIPTIONS OF MONITOR METHODS
Monitor angular acceleration of crankshaft and detect
malfunction  when  negative  variation  of  the  angular
acceleration is large.

MONITOR EXECUTION

Continuous

MONITOR EXECUTION CONDITIONS (Other
monitor and Sensor)

Other Monitor (There is no temporary DTC stored in
memory for the item monitored below)

｠

Not applicable

Sensor (The sensor below is determined to be
normal)

｠

Camshaft position sensor

｠

Mass airflow sensor

｠

Engine coolant temperature sensor

｠

Intake air temperature sensor

｠

Barometric pressure sensor

｠

Throttle position sensor

13Ab-394

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES