Mitsubishi Pajero Pinin. Manual - part 113

 

  Index      Mitsubishi     Mitsubishi Pajero Pinin - service repair manual 2001 year

 

Search            

 

 

 

 

 

 

 

 

 

Content   ..  111  112  113  114   ..

 

 

Mitsubishi Pajero Pinin. Manual - part 113

 

 

MPI <4G9> – 

Troubleshooting

13C-38

Code No. P0443 Purge control solenoid valve system

Probable cause

Range of Check

D

Ignition switch: ON

D

Battery voltage is 10 V or more.

Set Conditions

D

The solenoid coil surge voltage (battery voltage + 2 V) is not detected
when the purge control solenoid valve is turned from on to off.

D

Malfunction of the purge control solenoid valve

D

Open or short circuit in the purge control solenoid
valve circuit or loose connector contact

D

Malfunction of engine-ECU

NG

Replace the engine-ECU.

OK

Check the trouble symptoms.

OK

NG

Repair

Check the harness wires between
the purge control solenoid valve and
the engine control relay, and
between the purge control solenoid
valve and the engine-ECU.

OK

Check the following connector:
C-87

NG

Repair

OK

Replace the engine-ECU.

Repair

OK

NG

Check the harness wire between
the purge control solenoid valve and
the engine-ECU.

NG

Check the following connector:
A-02, C-87

NG

Repair

OK

Measure at engine-ECU connector
C-87.

D

Measure the voltage at the
engine-ECU terminal.

D

Ignition switch: ON

D

The voltage between terminal 9
and earth
OK: System voltage

NG

Check the harness wire between
the purge control solenoid valve and
the engine control relay, and repair
if necessary.

NG

Check the following connector:
A-36, A-43X

NG

Repair

OK

Measure at the purge control
solenoid valve connector A-02.

D

Disconnect the connector and
measure at the harness side.

D

Ignition switch: ON

D

The voltage between terminal 2
and earth
OK: System voltage

OK

Check the following connector:
A-02

NG

Repair

NG

Measure at the purge control
solenoid valve connector A-02.

D

Disconnect the connector, and
measure at the solenoid valve
side.

D

The resistance between
terminals 1 and 2
OK: 28  – 36 

 (at 20

_

C)

NG

Replace

MUT-

II

 Actuator Test

08 Purge control solenoid valve

OK: Operating sound can be

heard and the valve vibrates.

OK

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

MPI <4G9> – 

Troubleshooting

13C-39

Code No. P0500 Vehicle speed sensor system

Probable cause

Range of Check

D

Engine: Two seconds after the engine was started

D

Idle switch: OFF

D

Engine speed: 2,500 r/min or more

D

During high engine load

Set Conditions

D

The sensor output voltage does not change for 4 seconds (no pulse signal
input).

D

Malfunction of the vehicle speed sensor

D

Open or short circuit in the vehicle speed sensor
circuit or loose connector contact

D

Malfunction of engine-ECU

NG

Replace the engine-ECU.

OK

Check the trouble symptoms.

OK

Check the following connector: C-90

NG

Repair

NG

Repair

OK

Check the harness wire between the engine-ECU, and repair
if necessary.

NO

Check the vehicle speed sensor
(Refer to GROUP 54 – Combination Meter.)

YES

Use an analyzer to measure the output waveform of the
vehicle speed sensor at engine-ECU connector C-90.

D

Driving the vehicle

D

The voltage between terminal 86 and earth
OK: A normal waveform should be displayed as de-

scribed in OSCILLOSCOPE INSPECTION PROCE-
DURE, and noise should not be displayed in the
waveform. (Refer to GROUP 23 – Troubleshooting.) 

NG

Check the following connectors: 
 B-08, D-02, C-41<RHD>, C-38<LHD>, C-28, C-90

Does the speedometer operate normally?

13C-40

Code No. P0505 Idle speed control (ISC) system

Probable cause

Check Area

D

Vehicle speed has reached 1.5 km/h at least once.

D

Under the closed loop idle speed control.

Judgment Criteria

D

Actual idle speed has continued to be higher than the target idle speed by
300 r/min or more for 10 sec.

Check Area

D

Vehicle speed has reached 1.5 km/h at least once.

D

During idle speed closed loop control.

D

The highest temperature at the last drive is 45

_

C or less.

D

Engine coolant temperature is approx. 80

_

C or more.

D

Battery voltage is 10 V or more.

D

Intake air temperature is –10

_

C or more.

Judgment Criteria

D

Actual idle speed has been minimum 200 r/min higher than the target idle
speed for 10 seconds.

Check Area

D

During idle speed closed loop control.

D

Engine coolant temperature is about 80

_

C or higher.

D

Battery voltage is 10 V or higher.

D

Power steering switch is off.

D

Intake air temperature is –10

_

C or more.

D

Volume efficiency is 40 percent or lower.

D

Barometric pressure is 76 kPa or higher.

Judgment Criteria

D

Actual idle speed has been minimum 100 r/min higher than the target idle
speed for 10 seconds.

D

Malfunction of idle speed control (ISC) servo

D

Improper connector contact, open circuit or
short-circuit harness wire

D

Malfunction of engine-ECU

MPI <4G9> – 

Troubleshooting

13C-41

OK

To the next page

OK

Replace the engine-ECU.

NG

Repair

OK

Check the harness wire between the
idle speed control servo and the engine-
ECU.

NG

Check the following connector:
A-04, C-87

NG

Repair

Measure at engine-ECU connector
C-87.

D

Use test harness (MB991709) to
connect the connector, and mea-
sure at the pick-up harness side.

D

The voltage between terminal 4 and
earth

D

The voltage between terminal 5 and
earth

D

The voltage between terminal 17
and earth

D

The voltage between terminal 18
and earth
OK: The voltage changes as fol-

lows for three seconds when
the ignition switch is turned
ON.
(When using a circuit tester)
5 V and 8 V alternates
(When using an analyzer)
1 V or less and system volt-
age alternates.

OK

OK

Check the harness wire between the
engine control relay and the idle speed
control servo, and repair if necessary.

OK

Measure at the idle speed control
servo connector A-04.

D

Disconnect the connector, and
measure at the harness side.

D

Ignition switch: ON

D

The voltage between terminal 2
and earth

D

The voltage between terminal 5
and earth
OK: System voltage

NG

Check the following connector:
A-04, A-36, A-43X

OK

Check the following connector:
A-04

NG

Repair

OK

Check the idle speed control (ISC)
servo. (Refer to P.13C-107.)

NG

Replace

OK

Check the throttle body (around the
throttle valve) for contamination.

NG

Clean around the throttle valve.
(Refer to P.13C-96.)

No

MUT-

II

 Self-Diag code

Is any diagnosis code other than
No. P0505 output?

Yes

Refer to P.13C-12, INSPECTION
CHART FOR DIAGNOSIS CODES.

Check intake air hose and intake
manifold for air intake.

NG

Repair

 

 

 

 

 

 

 

Content   ..  111  112  113  114   ..