Mitsubishi Pajero Pinin. Manual - part 82

 

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Mitsubishi Pajero Pinin. Manual - part 82

 

 

GDI  – 

Troubleshooting

13A-77

INSPECTION PROCEDURE 11

The engine stalls when starting the car. (Pass out)

Probable cause

The cause is probably poor ignition due to a malfunctioning spark plug (weak spark),
or an incorrect air/fuel ratio when the accelerator is depressed.



Malfunction of the ignition system



Malfunction of the EGR valve



Air stuck in the air intake system

OK

MUT-

II

 Actuator test

08 Purge control solenoid valve (Refer to P.13A-100.)

NG

Check the purge control solenoid valve system. (Refer to P.13A-52,
INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0443.)

No

MUT-

II

 Data list

68 EGR valve (Refer to P.13A-94.)

NG

Check the EGR valve. (Refer to P.13A-50, INSPECTION PROCE-
DURE FOR DIAGNOSIS CODE P0403.)

MUT-

II

 Self-Diag code

Is a diagnosis code displayed?

Yes

(Refer to P.13A-12, INSPECTION CHART FOR DIAGNOSIS
CODES.)

OK

Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.

Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.

(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.

NG

Replace the ignition coil.

OK

Check all the following items:
(1) Spark plug
(2) Check if air is stuck in the air intake system.



Damage intake manifold gasket



Damaged or disconnected vacuum hose



Damaged air intake hose

GDI  – 

Troubleshooting

13A-78

INSPECTION PROCEDURE 12

The engine stalls when decelerating.

Probable cause

The cause is probably an improper air/fuel ratio due to a faulty EGR system, or
poor intake air volume due to a faulty electronic-controlled throttle valve system.



Malfunction of the electronic-controlled throttle valve
system



Malfunction of the EGR valve

OK

Check all the following items:



Spark plug



Clean around the throttle valve (Refer to P.13A-92*.)

OK

Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.

Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.

(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.

NG

Replace the ignition coil.

OK

MUT-

II

 Data list

68 EGR valve (Refer to P.13A-94.)

NG

Check the EGR valve system. (Refer to P.13A-50, INSPECTION
PROCEDURE FOR DIAGNOSIS CODE P0403.)

OK

MUT-

II

 Data list

79 Throttle position sensor (1st channel) (Refer to P.13A-94.)

NG

Check the throttle valve position feedback system. 
(Refer to P.13A-55, INSPECTION PROCEDURE FOR DIAGNO-
SIS CODE P1221.)

No

MUT-

II

 Data list

26 Accelerator pedal position switch (Refer to P.13A-94.)

NG

Check the accelerator pedal position switch. 
(Refer to P.13A-90, INSPECTION PROCEDURE 28.)

No

MUT-

II

 Self-Diag code

Is a diagnosis code displayed?

Yes

(Refer to P.13A-12, INSPECTION CHART FOR DIAGNOSIS
CODES.)

Have the battery terminals been disconnected recently?

Yes

Warm up the engine, and then let it run at idle for approx. ten
minutes.

NOTE
*:

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

GDI  – 

Troubleshooting

13A-79

INSPECTION PROCEDURE 13

Hesitation, sag, stumble, poor acceleration or surge

Probable cause

The cause is probably a malfunction of the ignition system, electronic-controlled
throttle valve system, compression pressure, etc.



Malfunction of the ignition system



Malfunction of the air/fuel ratio control system



Malfunction of the electronic-controlled throttle valve
system



Improper compression pressure



Air stuck in the air intake system

OK

To the next page

OK

MUT-

II

 Actuator test

08 Purge control solenoid valve (Refer to P.13A-100.)

NG

Check the purge control solenoid valve. (Refer to P.13A-52, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0443.)

OK

MUT-

II

 Data list

68 EGR valve (Refer to P.13A-94.)

NG

Check the EGR valve. (Refer to P.13A-50, INSPECTION PROCE-
DURE FOR DIAGNOSIS CODE P0403.)

OK

Check that air is sucked in the air intake system.



Broken intake manifold gasket



Damaged vacuum hose



Damaged air intake hose

OK

MUT-

II

 Data list

11 Oxygen sensor (front)

OK: 0  – 400 mV and 600 – 1,000 mV alternates when the

engine is idling (wait for four minutes after the engine
started).

NG

Measure fuel high-pressure between the fuel pump (high pressure)
and injector. (Refer to P.13A-108.)

OK

MUT-

II

 Data list

11 Oxygen sensor (front)

OK: 600  – 1,000 mV when the engine is suddenly raced

NG

Check the oxygen sensor (front) system. (Refer to P.13A-25, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0130.)

OK

MUT-

II

 Data list

59 Oxygen sensor (rear)



Transmission: 2nd gear <M/T>, L range <A/T>



Driving with throttle widely open
OK: 600  – 1,000 mV

NG

Check the oxygen sensor (rear) system. (Refer to P.13A-28, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0136.)

OK

MUT-

II

 Data list

79 Throttle position sensor (1st channel) (Refer to P.13A-94.)

NG

Check the throttle valve position feedback system. 
(Refer to P.13A-55, INSPECTION PROCEDURE FOR DIAGNO-
SIS CODE P1221.)

OK

MUT-

II

 Data list

21 Engine coolant temperature sensor (Refer to P.13A-94.)

NG

Check the engine coolant temperature sensor. (Refer to P.13A-19,
INSPECTION PROCEDURE FOR DIAGNOSIS CODE P0115.)

OK

MUT-

II

 Data list

25 Barometric pressure sensor (Refer to P.13A-94.)

NG

Check the barometric pressure sensor. (Refer to P.13A-16, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0105.)

OK

MUT-

II

 Data list

13 Intake air temperature sensor (Refer to P.13A-94.)

NG

Check the intake air temperature sensor. (Refer to P.13A-18, IN-
SPECTION PROCEDURE FOR DIAGNOSIS CODE P0110.)

OK

NG

Check the accelerator pedal position switch. 
(Refer to P.13A-90, INSPECTION PROCEDURE 28.)

MUT-

II

 Data list

26 Accelerator pedal position switch (Refer to P.13A-94.)

No

Check ignition timing. (Refer to GROUP 11A – Engine Adjustment.)

NG

Check that the crank angle sensor and timing belt cover are proper-
ly installed.

MUT-

II

 Self-Diag code

Is a diagnosis code displayed?

Yes

(Refer to P.13A-12, INSPECTION CHART FOR DIAGNOSIS
CODES.)

GDI  – 

Troubleshooting

13A-80

NG

Replace the injector.

OK

Check all the following items:



Spark plug



EGR system



Compression pressure



Clogged fuel filter, fuel line

Check trouble symptom.

OK

OK

Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.

Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.

(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.

NG

Replace the ignition coil.

OK

Measure high fuel pressure between the fuel pump (high pressure)
and injector. (Refer to P.13A-108.)

NG

Repair

From the previous page

INSPECTION PROCEDURE 14

The feeling of impact when accelerating

Probable cause

The cause is probably an ignition leak being generated in line with an increase
in the spark plug request voltage during acceleration.



Malfunction of the ignition system

NG

Replace the ignition coil.

OK

Check ignition coil spark for each cylinder.
(1) Remove the ignition coil.
(2) Install a new spark plug to the removed ignition coil.
(3) Disconnect the injector intermediate connector.

Caution
Never touch the connector terminal as approx. 100 V is
applied to the injector, or you are seriously injured.

(4) Earth the spark plug electrode securely.
(5) Check that the spark plug ignites when the engine is cranked.

OK

Check all the following items:



Spark plug



Ignition current leak

No

MUT-

II

 Data list

79 Throttle position sensor (1st channel) (Refer to P.13A-94.)

NG

Check the throttle valve position feedback system. 
(Refer to P.13A-55, INSPECTION PROCEDURE FOR DIAGNO-
SIS CODE P1221.)

MUT-

II

 Self-Diag code

Is a diagnosis code displayed?

Yes

(Refer to P.13A-12, INSPECTION CHART FOR DIAGNOSIS
CODES.)

 

 

 

 

 

 

 

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