Mitsubishi L200. Manual - part 71

TROUBLESHOOTING

DIESEL FUEL

13A-80

STEP 7. Perform voltage measurement at A-105 
manifold absolute pressure sensor connector.

• Use special tool harness (MB991709) to connect 

connector, and measure at pick-up harness.

• Ignition switch: ON

• Voltage between terminal No. 2 and earth.

OK: The voltage should be 0.7 

− 1.2 V. When 

the accelerator pedal is quickly depressed 
from the idling state, the voltage temporarily 
rises.

Q: Is the check result normal?

YES : 

Go to Step 8. 

NO : 

Replace the manifold absolute pressure 
sensor.

STEP 8. Perform voltage measurement at C-105 
engine-ECU connector.

• Measure engine-ECU terminal voltage.

• Ignition switch: ON

• Voltage between terminal No. 37 and earth.

OK: The voltage should be 0.7 

− 1.2 V. When 

the accelerator pedal is quickly depressed 
from the idling state, the voltage temporarily 
rises.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Check and repair harness between A-105 

(terminal No. 2) manifold absolute pressure 
sensor connector and C-105 (terminal No. 
37) engine-ECU connector.

• Check output line for damage.

AK900797

1

3 2

AB

Harness side 
connector

A-105 (L)

Connector: A-105

AKA00089

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C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

AK900797

1

3 2

AB

Harness side 
connector

A-105 (L)

Connector: A-105

TROUBLESHOOTING

DIESEL FUEL

13A-81

STEP 9. Connector check: C-105 engine-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair or replace the connector.

STEP 10. Check on clogged EGR cooler.
NOTE: When checking the clogged EGR cooler, 
make a visual check or use an air blower.

• Check whether the EGR cooler is being clogged 

or not.

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Replace the EGR cooler.

STEP 11. Check on clogged EGR pipe (A, B).

• Check whether the EGR pipe (A, B) is being 

clogged or not.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Replace the EGR pipe (A, B).

STEP 12. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 6: Manifold absolute pressure sensor

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ). 

NO : 

Replace the engine-ECU. When the engine-
ECU is replaced, write the chassis number 
(Refer to GROUP 00 

− Precautions Before 

Service 

− How to Perform Chassis Number 

Writing ). After replacing the engine-ECU, 
register the injector identification code and 
learn fuel injection (Refer to GROUP 00 

− 

Precautions Before Service 

− What The 

Common Rail Engine Learns ). After 
registering the injector identification code, 
the vehicle equipped with the DPF carries 
out the forcible DPF regeneration. (Refer to 
GROUP 17 

− Emission Control − Diesel 

Particulate Filter (DPF) System 

− Forcible 

DPF Regeneration ).

AKA00089

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C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB

TROUBLESHOOTING

DIESEL FUEL

13A-82

Code No. P0107: Manifold Absolute Pressure Sensor Circuit Low Input

OPERATION

• A power voltage of 5 V is applied to the manifold 

absolute pressure sensor power terminal (termi-
nal No. 1) from the engine-ECU (terminal No. 72) 
and earthed to the engine-ECU (terminal No. 31) 
from the manifold absolute pressure sensor (ter-
minal No. 3).

• The sensor signal is inputted to the engine-ECU 

(terminal No. 37) from the manifold absolute 
pressure sensor output terminal (terminal No. 2).

FUNCTION

• The manifold absolute pressure sensor converts 

the manifold absolute pressure into a voltage sig-
nal and inputs the signal to the engine-ECU.

• In response to the signal, the engine-ECU cor-

rects the fuel injection amount, etc.

TROUBLE JUDGMENT

Check Conditions

• Battery positive voltage is 8 − 16 V

• 2 seconds later after the ignition switch has been 

in "ON" position or the engine has started up

Judgment Criterion

• The manifold absolute pressure sensor output 

voltage should is lower than 0.28 V for 0.5 sec-
onds.

PROBABLE CAUSES

• Failed manifold absolute pressure sensor

• Open/short or harness damage circuit in manifold 

absolute pressure sensor circuit or loose connec-
tor contact

• Failed engine-ECU

DIAGNOSIS PROCEDURE

STEP 1. M.U.T.-III data list

• Refer to Data List Reference Table 

P.13A-542

.

a. Item 6: Manifold absolute pressure sensor

Q: Is the check result normal?

YES : 

Intermittent malfunction (Refer to GROUP 

00 

− How to Use Troubleshooting/

Inspection Service Points 

− How to Cope 

with Intermittent Malfunctions ).

NO : 

Go to Step 2 .

AKA00093

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Engine-ECU

31

LG-B

G-L

GR

37

72

A-105

Manifold 
absolute 
pressure 
sensor 

3

2

1

Manifold Absolute Pressure Sensor Circuit 

Wire colour code
B: Black  LG: Light green  G: Green  L: Blue  W: White  Y: Yellow  SB: Sky blue  BR: Brown  O: Orange  GR: Grey
R: Red  P: Pink  V:Violet  PU: Purple  SI:Silver

C-105

5 V

AB

TROUBLESHOOTING

DIESEL FUEL

13A-83

STEP 2. Connector check: A-105 manifold 
absolute pressure sensor connector

Q: Is the check result normal?

YES : 

Go to Step 3 .

NO : 

Repair or replace the connector.

STEP 3. Perform voltage measurement at A-105 
manifold absolute pressure sensor connector.

• Use special tool test harness (MB991709) to con-

nect connector, and measure at pick-up harness.

• Ignition switch: ON

• Voltage between terminal No. 1 and earth.

OK: 4.9 

− 5.1 V

Q: Is the check result normal?

YES : 

Go to Step 9 . 

NO : 

Go to Step 4 . 

STEP 4. Perform voltage measurement at C-105 
engine-ECU connector.

• Measure engine-ECU terminal voltage.

• Ignition switch: ON

• Voltage between terminal No. 72 and earth.

OK: 4.9 

− 5.1 V

Q: Is the check result normal?

YES : 

Go to Step 8 .

NO : 

Go to Step 5 .

AK900797

1

3 2

AB

Harness side 
connector

A-105 (L)

Connector: A-105

AK900797

1

3 2

AB

Harness side 
connector

A-105 (L)

Connector: A-105

AKA00089

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C-105 (B)

C-105 (B)

<R.H. drive vehicles>

Harness side connector

<L.H. drive vehicles>

Connector: C-105

AB