Mitsubishi Pajero Pinin. Manual - part 71

GDI  – 

Troubleshooting

13A-33

Code No. P0190 Abnormal fuel pressure

Probable cause

Range of Check



Ignition switch: ON

Set Conditions



The sensor output voltage is 4.8 V or more, or 0.2 V or less for four
seconds.



Malfunction of of fuel pressure sensor



Open or short circuit in the fuel pressure sensor
circuit or loose connector contact



Malfunction of engine-ECU

Range of Check



The following conditions are detected temporarily after the engine has been
started.
(1) Engine speed: 1,000 r/min or more
(2) Fuel pressure: 2 MPa or more



Engine running

Set Conditions



The fuel pressure is 6.9 MPa or more, or 2 MPa or less for four seconds.



Malfunction of high-pressure fuel pump



Clogging of high-pressure fuel lines

This diagnosis code will also be output when air is trapped into the
high-pressure fuel lines (such as poor fuel level). In that case, the air can be
evacuated by operating the engine for at least 15 seconds at 2,000 r/min. After
the repair, use the MUT-

II

 to erase the diagnosis code.



Air trapped due to poor fuel level

(2) NG

NG

Repair

OK

Check the harness wire between
the fuel pressure sensor connector
and the engine-ECU, and repair if
necessary.

OK

Transient malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)

NG

NG

Repair

OK

Measure at fuel pressure sensor
connector A-59.



Disconnect the connector, and
measure at the harness side.

(1) Voltage between terminal 1 and

earth (Ignition switch: ON)
OK: 4.8  – 5.2 V

(2) Resistance between terminal 3

and earth
OK: 2 

Ω

 or less

(1) NG

OK

Check the following connector:
C-18

NG

Repair

NG

Check the following connector:
C-18

NG

Repair

OK

Check the harness wire between the
fuel pressure sensor connector and
the engine-ECU.

NG

Repair

OK

Check the trouble symptoms.

NG

Replace the engine-ECU.

OK

Check the trouble symptoms.

NG

Replace the engine-ECU.

OK

To the next page

OK

Check the harness wire between the
fuel pressure sensor connector and
the engine-ECU.

NG

Repair

Check the following connector:
A-59

Measure at engine-ECU connector
C-18.



Measure the voltage at the
engine-ECU terminal.



Ignition switch: ON



Voltage between terminal 41 and
earth
OK: 4.8  – 5.2 V

Check the following connectors:
A-36, C-19

MUT-

II

 Data list

74 Fuel pressure sensor (Refer to

13A-94, DATA LIST
REFERENCE TABLE.)

GDI  – 

Troubleshooting

13A-34

NG

(2) NG

OK

(1) NG

Check the following connector:
C-18

From the previous page

OK

Check the harness wire between
the fuel pressure sensor connector
and the engine-ECU, and repair if
necessary.

Replace the fuel pressure sensor.

Check the trouble symptoms.

Check the following connector:
C-19

NG

Repair

NG

Check the harness wire between
the fuel pressure sensor connector
and the engine-ECU, and repair if
necessary.

OK

Measure at engine-ECU connector
C-19.



Measure the voltage at the
engine-ECU terminal.



Engine: Idling



Voltage between terminal 92 and
earth
OK: 0.3  – 4.7 V

NG

Check the following connector:
C-19

NG

Repair

OK

Check the harness wire between
the fuel pressure sensor connector
and the engine-ECU, and repair if
necessary.

OK

Check the following connector:
C-19

NG

Repair

OK

Check the trouble symptoms.

OK

Replace the engine-ECU.

OK

Repair

NG

(3) NG

Check the following connectors:
A-36, C-19

OK

Check the harness wire between
the fuel pressure sensor connector
and the engine-ECU, and repair if
necessary.

Repair

Measure at fuel pressure sensor
connector A-59.



Use test harness (MB991658) to
connect the connector, and
measure at the pick-up harness.



Engine: Idling

(1) Voltage between terminal 1 and

earth
OK: 4.8  – 5.2 V

(2) Voltage between terminal 2 and

earth
OK: 0.3  – 4.7 V

(3) Voltage between terminal 3 and

earth
OK: 0.5 V or less

Code No. P0201 No. 1 injector system

Probable cause

Range of Check



The engine speed is 4,000 r/min or less.



The battery voltage is 10 V or more.



The fuel cut operation or the injector operation (by carrying out the Actuator
Test) is not in progress.

Set Conditions



The injector driver is not transmitting  a injector open circuit check signal
for four seconds.



Malfunction of No. 1 injector



Open or short circuit in the No. 1 injector circuit
or loose connector contact



Malfunction of engine-ECU

GDI  – 

Troubleshooting

13A-35

NG

Check the following connector:
A-78

NG

Repair

OK

NG

Repair

MUT-

II

 Actuator Test

01 No. 1 injector

OK: The idling condition should

change.

OK

Check the trouble symptoms.

OK

Transient malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)

NG

Replace the injector driver.

Check the trouble symptoms.

NG

Replace the engine-ECU.

OK

Measure at intermediate connector
A-78.



Disconnect the connector and
measure at the harness side.



Resistance between terminals 1
and 2
OK: 0.9  – 1.1 

Ω

NG

Check the following connector:
A-61

NG

Repair

OK

Replace the No. 1 injector.

OK

Check the following connector:
A-55

NG

Repair

OK

Check the harness wire between
the injector driver and the
intermediate connector.

NG

Repair

OK

Check the following connector:
C-17

NG

Repair

OK

Check the harness wire between the
injector driver and the engine-ECU.

NG

Repair

OK

Use an analyzer to measure the
signal waveform at engine-ECU
connectors C-17 and C-19.



Engine: Idling



Voltage between terminal 1 and
earth
OK: A normal waveform should

be displayed as described
on P.13A-84* (INSPEC-
TION PROCEDURE US-
ING AN ANALYZER).

NG

Check the following connector:
A-61

OK

Check the following connector:
A-61

NG

Repair

NG

OK

OK

Check the harness wire between
the No. 1 injector and the
intermediate connector.

NG

Replace the engine-ECU.

Repair

Repair

Check the harness wire between
No. 1 injector and the intermediate
connector.

OK

Check the harness wire between
No. 1 injector and the intermediate
connector.

NG

Repair

OK

Check the trouble symptoms.

NG

Replace the injector driver.

Replace the No. 1 injector.

NOTE
*:

Refer to the ’00 PAJERO PININ Workshop Manual (Pub. No. CKRE00E1)

GDI  – 

Troubleshooting

13A-36

Code No. P0202 No. 2 injector system

Probable cause

Range of Check



The engine speed is 4,000 r/min or less.



The battery voltage is 10 V or more.



The fuel cut operation or the injector operation (by carrying out the Actuator
Test) is not in progress.

Set Conditions



The injector driver is not transmitting  a injector open circuit check signal
for four seconds.



Malfunction of No. 2 injector



Open or short circuit in the No. 2 injector circuit
or loose connector contact



Malfunction of engine-ECU

NG

Check the following connector:
A-78

NG

Repair

OK

NG

Repair

MUT-

II

 Actuator Test

02 No. 2 injector

OK: The idling condition should

change.

OK

Check the trouble symptoms.

OK

Transient malfunction
(Refer to GROUP 00 – Points to
Note for Intermittent Malfunctions.)

NG

Replace the injector driver.

Check the trouble symptoms.

NG

Replace the engine-ECU.

OK

Measure at intermediate connector
A-78



Disconnect the connector and
measure at the harness side.



Resistance between terminals 3
and 4
OK: 0.9  – 1.1 

Ω

NG

Check the following connector:
A-62

NG

Repair

OK

Replace the No. 2 injector.

OK

Check the following connector:
A-55

NG

Repair

OK

Check the harness wire between
the injector driver and the
intermediate connector.

NG

Repair

OK

Check the following connector:
B-17

NG

Repair

OK

Check the harness wire between the
injector driver and the engine-ECU.

NG

Repair

OK

Use an analyzer to measure the
signal waveform at engine-ECU
connectors C-17 and C-19.



Engine: Idling



Voltage between terminal 9 and
earth
OK: A normal waveform should

be displayed as described
on P.13A-84* (INSPEC-
TION PROCEDURE US-
ING AN ANALYZER).

NG

Check the following connector:
A-62

OK

Check the following connector:
A-62

NG

Repair

OK

To the next page

NG

OK

OK

Check the harness wire between
the No. 2 injector and the
intermediate connector.

NG

Replace the engine-ECU.

Repair

Repair

Check the harness wire between
No. 2 injector and the intermediate
connector.

NOTE
*:

Refer to the ’00 PAJERO PININ Workshop Manual (Pub. No. CKRE00E1)