Mitsubishi Outlander XL. Manual - part 235

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, check data list item 8:
Manifold Absolute Pressure 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)

Turn the ignition switch to the "ON" position.

(3)

Set scan tool MB991958 to the data reading mode for item
8, Manifold Absolute Pressure Sensor.

｠

When altitude is 0 m (0 foot), 101 kPa (29.8 in.Hg).

｠

When altitude is 600 m (1,969 feet), 95 kPa (28.1 in.Hg).

｠

When altitude is 1,200 m (3,937 feet), 88 kPa (26.0 in.Hg).

｠

When altitude is 1,800 m (5,906 feet), 81 kPa (23.9 in.Hg).

(4)

Start the engine.

｠

When the engine is idling, 16 - 36 kPa (4.7 - 10.6 in.Hg).

｠

When  the  engine  is  suddenly  revved,  manifold  absolute
pressure varies.

(5)

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-105 at the manifold
absolute pressure 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 7.

STEP 3. Measure the sensor supply voltage at manifold
absolute pressure sensor connector B-105.

(1)

Disconnect the connector B-105.

(2)

Turn the ignition switch to the "ON" position.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-135

DIAGNOSTIC TROUBLE CODE PROCEDURES

B-105 harness
connector:
component side 

ZK603177AA00

1

2

3

(3)

Measure the voltage between terminal No. 3 and ground.

｠

Voltage should be between 4.9 and 5.1 volts.

(4)

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

Q:Is the measured voltage between 4.9 and 5.1 volts?

YES:

 Go to Step 5.

NO:

 Go to Step 4.

STEP 4. Check for open circuit and short circuit to ground
between manifold absolute pressure sensor connector
B-105 and ECM connector B-10.

(1)

Disconnect the manifold absolute pressure sensor connector
B-105 and the ECM connector B-10

ZK603178

1

2

3

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

AA00

B-10 harness
connector:
component side 

B-105 harness
connector:
component side 

(2)

Measure  the  resistance  between  the  manifold  absolute
pressure  sensor  connector  B-105  (terminal  No.  3)  and
connector B-10 (terminal No. 44).

｠

Should be less than 2 ohms.

ZK603179AA00

B-105 harness
connector:
component side 

1

2

3

(3)

Check  for  the  continuity  between  the  manifold  absolute
pressure sensor B-105 (terminal No. 3) and ground.

｠

Not continuity.

Q:Is the harness wire in good condition?

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 7.

NO:

 Repair it. Then go to Step 7.

13Ab-136

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES

STEP 5. Check for open circuit and short curcuit to ground
between manifold absolute pressure sensor connector
B-105 and ECM connector B-10.

(1)

Disconnect the manifold absolute pressure sensor connector
B-105 between the ECM connector B-10.

ZK603180

1

2

3

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

AA00

B-10 harness
connector:
component side 

B-105 harness
connector:
component side 

(2)

Measure  the  resistance  between  the  manifold  absolute
pressure  sensor  connector  B-105  (terminal  No.  1)  and
connector B-10 (terminal No. 45).

｠

Should be less than 2 ohms.

ZK603181AA00

B-105 harness
connector:
component side 

1

2

3

(3)

Check  for  the  continuity  between  the  manifold  absolute
pressure sensor B-105 (terminal No. 3) and ground.

｠

Not continuity.

Q:Is the harness in good condition?

YES:

 Go to Step 6.

NO:

 Repair it. Then go to Step 7.

STEP 6. Replace the manifold absolute pressure sensor.

(1)

Replace the manifold absolute pressure sensor.

(2)

Carry out a test drive with the drive cycle pattern. Refer to
Diagnostic  Function  -  OBD-II  Drive  Cycle  -  Pattern  7  P.
13Ab-8.

(3)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0107 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 7.

NO:

 The inspection is complete.

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

13Ab-137

DIAGNOSTIC TROUBLE CODE PROCEDURES

STEP 7. 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  7  P.
13Ab-8.

(2)

Check the diagnostic trouble code (DTC).

Q:Is DTC P0107 set?

YES:

 Retry the troubleshooting.

NO:

 The inspection is complete.

DTC P0108: Manifold Absolute Pressure Circuit High Input

M11310100175USA0000010000

ZK602834

1

2

3 4 5 6 7 8 9 10 11 12 13 14 15 16

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

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

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

3

2

1

AA00

ENGINE
CONTROL
MODULE

5 V

MANIFOLD ABSOLUTE
PRESSURE SENSOR

LIGHT GREEN-RED

YELLO

W

-BLA

CK

BLUE

3

1

2

MANIFOLD ABSOLUTE PRESSURE SENSOR CIRCUIT

44

46

45

B-10

B-105

(MU802723)

13Ab-138

MULTIPORT INJECTION SYSTEM (MFI) <DIAGNOSIS>

DIAGNOSTIC TROUBLE CODE PROCEDURES