Mitsubishi Outlander XL. Manual - part 298

DIAGNOSIS

Required Special Tools:

｠

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

｠

MB991824: V.C.I.

｠

MB991827: USB Cable

｠

MB991910: Main Harness A

｠

MB991658: Test Harness

STEP 1. Using scan tool MB991958, check data list item 15:
Throttle Position Sensor (sub).

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)

Detach the intake air hose at the throttle body.

(4)

Disconnect the connector of the throttle position sensor.

(5)

Use test harness special tool (MB991658) to connect only
terminals No. 3, No. 4, No. 5, and No. 6.

(6)

Set scan tool MB991958 to the data reading mode for item
15, Throttle Position Sensor (sub).

｠

Output  voltage  should  be  4.0  volts  or  more  when  the
throttle valve is fully closed with your finger.

｠

Output voltage should be 1.0 volt or less when the throttle
valve is fully open with your finger.

(7)

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

Q:Is the sensor operating properly?

YES:

 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.

NO:

 Go to Step 2.

STEP 2. Check harness connector B-08 at the throttle
position sensor and harness connector B-10 at the ECM for
damage.

Q:Is the harness connector in good condition?

YES:

 Go to Step 3.

NO:

 Repair it. Refer to GROUP 00E, Harness Connector

Inspection P.00E-2. Then go to Step 6.

STEP 3. Check for open circuit and harness damage
between the throttle position sensor connector B-08 and
ECM connector B-10.

(1)

Disconnect the throttle position sensor connector B-08 and
the ECM connector B-10.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-387

DIAGNOSTIC TROUBLE CODE PROCEDURES

ZK603223

1

6

5

4 3

2

16 15 14 13 12 11 10 9 8 7 6 5 4 3

2

1

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49

B-08 harness connector:
component side 

AA00

B-10 harness connector:
component side 

(2)

Measure the resistance between the throttle position sensor
connector B-08 (terminal No. 3) and the ECM connector B-10
(terminal No. 13).

｠

Should be less than 2 ohms.

ZK603224

1

6

5

4 3

2

AA00

B-08 harness
connector:
component side 

(3)

Check  for  the  throttle  position  sensor  connector  B-08
(terminal No. 3) and ground.

｠

Not continuity.

Q:Is the harness wire in good condition?

YES:

 Go to Step 4.

NO:

 Repair it. Then go to Step 6.

STEP 4. Using scan tool MB991958, check data list item 15:
Throttle Position Sensor (sub).

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)

Detach the intake air hose at the throttle body.

(4)

Disconnect the connector of the throttle position sensor.

(5)

Use test harness special tool (MB991658) to connect only
terminals No. 3, No. 4, No. 5, and No. 6.

(6)

Set scan tool MB991958 to the data reading mode for item
15, Throttle Position Sensor (sub).

｠

Output  voltage  should  be  4.0  volts  or  more  when  the
throttle valve is fully closed with your finger.

｠

Output voltage should be 1.0 volt or less when the throttle
valve is fully open with your finger.

(7)

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

Q:Is the sensor operating properly?

YES:

 It can be assumed that this malfunction is

intermittent. Refer to GROUP 00, How to Use

13Ab-388

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

Troubleshooting/Inspection Service Points - How to Cope
with Intermittent Malfunctions P.00-15.

NO:

 Go to Step 5.

STEP 5. Replace the throttle body assembly.

(1)

Replace the throttle body assembly.

(2)

Turn the ignition switch to the "ON" position.

(3)

After the DTC has been deleted, read the DTC again.

(4)

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

Q:Is DTC P0223 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 6.

NO:

 The inspection is complete.

STEP 6. Using scan tool MB991958, read the diagnostic
trouble code (DTC).

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)

After the DTC has been deleted, read the DTC again.

(4)

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

Q:Is DTC P0223 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

DTC P0300: Random/Multiple Cylinder Misfire Detected

M11310100217USA0000010000

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

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-389

DIAGNOSTIC TROUBLE CODE PROCEDURES

DTC SET CONDITIONS

Logic Flow Chart

Start

Monitoring

conditions

Calculate crankshaft

angular acceleration (An)

An < TH

MF

 (Ne, Ec)*

Misfire

Calculate percent misfire (R

MF

)

End

No

No

No

No

No

No

Yes

Yes

Yes

Yes

Yes

Yes

Good

Within 1000rev

R

MF

 > specified value

Malfunction

(exceed std  ×1.5)

Good

Malfunction

(damage the cat.)

Good

R

MF

 > THCD (Ne, Ec)*

Calculate percent misfire (R

MF

)

Within 200rev

(Ne : engine  spee d

* R

MF

 > THCD

Ec : charge  efficienc y
TH

MF

: Threshold  value  for misfir e

TH

CD

: Threshold  value  for catalyst  damage )

ZK603750 AA00

13Ab-390

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES