Mitsubishi Pajero Pinin. Manual - part 88

 

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Mitsubishi Pajero Pinin. Manual - part 88

 

 

GDI  – 

Troubleshooting

13A-101

CHECK AT THE ENGINE-ECU TERMINALS

TERMINAL VOLTAGE CHECK CHART

Engine-ECU Connector Terminal Arrangement

Terminal No.

Check item

Check requirements (engine condition)

Normal condition

1

No. 1 injector

Engine: Warm up, and then depress
the accelerator pedal suddenly from

Decreases slightly for short
time from 9 – 13 V

9

No. 2 injector

the accelerator pedal suddenly from
the idle speed.

time from 9 – 13 V

24

No. 3 injector

2

No. 4 injector

3

No. 1 ignition coil

Engine: 3,000 r/min

0.3 – 3.0 V

13

No. 2 ignition coil

12

No. 3 ignition coil

4

No. 4 ignition coil

5

EGR valve (D)

Ignition switch: Immediately after
turning ON

5 – 8 V (fluctuates for
approx three seconds)

6

EGR valve (C)

turning ON

approx. three seconds)

32

EGR valve (B)

34

EGR valve (A)

34

EGR valve (A)

8

Alternator G terminal



Engine: Warm up, and then idling



Radiator fan: Not operating



Headlamp: OFF 

→

 ON



Stop lamp: OFF 

→

 ON



Rear defogger switch: OFF 

→

 ON

Voltage increases by
 0.2 – 3.5 V

14

GDI ECO indication lamp

Ignition switch: OFF 

→

 ON

0 – 3 V (System voltage
after five seconds)

Engine: When the accelerator pedal is
suddenly depressed while the engine
is idling

System voltage

16

Purge control solenoid
valve



Engine cool-
ant tempera-

Engine: Stopped

System voltage

valve

ant  tempera-
ture:
80  – 95



C



Ignition
switch: ON

Engine: Start the
engine, and then
increase engine
speed up to 3,500
r/min.

Voltage decreases

GDI  – 

Troubleshooting

13A-102

Terminal No.

Normal condition

Check requirements (engine condition)

Check item

18

Fan controller

Radiator and condenser fans are not
operating.

0 – 0.3 V

Radiator and condenser fans are
operating.

0.7 V or more

20

A/C relay



Engine: Idling



A/C switch: OFF 

→

 ON 

(Compressor is operating)

System voltage, or changes
from momentarily 6 V or
more to 0 

→

3 V

21

Fuel pump relay

Ignition switch:
ON

Engine: Stopped

System voltage

ON

Engine: Idling

0 – 3 V

31

Engine warning lamp

Ignition switch: OFF 

→

 ON

0 – 3 V 

→

System voltage

(after several seconds)

41

Sensor power supply

Ignition switch: ON

4.5 – 5.5 V

42

Power supply to
accelerator pedal position
sensor (1st channel)

Ignition switch: ON

4.5 – 5.5 V

43

Crank angle sensor

Engine: Cranking

0.4 – 4.0 V

Engine: Idling

1.5 – 2.5 V

44

Engine coolant tempera-
ture sensor

Ignition switch:
ON

Engine coolant
temperature: 0



C

3.2 – 3.5 V

Engine coolant
temperature:
 20



C

2.3 – 2.9 V

Engine coolant
temperature:
 40



C

1.5 – 2.1 V

Engine coolant
temperature:
80



C

0.4 – 1.0 V

45

Engine ignition signal

Engine: 3,000 r/min

0.3 – 3.0 V

47

Power supply

Ignition switch: ON

System voltage

59

50

Camshaft position sensor

Engine: Cranking

0.4 – 3.0 V

Engine: Idling

0.5 – 2.0 V

51

Barometric pressure
sensor

Ignition switch:
ON

Altitude: 0 m

3.7 – 4.3 V

sensor

ON

Altitude: 1,200 m

3.2 – 3.8 V

52

Alternator FR terminal



Engine: Warm up, and then idling



Radiator fan: Not operating



Headlamp: OFF 

→

 ON



Stop lamp: OFF 

→

 ON



Rear defogger: OFF 

→

 ON

Voltage decreases

GDI  – 

Troubleshooting

13A-103

Terminal No.

Normal condition

Check requirements (engine condition)

Check item

53

Oxygen sensor (rear)



Transmission: 2nd gear



Engine speed: 3,500 r/min or more



Driving with the throttle valve widely
open

 0.6 – 1.0 V

54

Power steering fluid
pressure switch

Engine: Warm
up, and then
idling

Steering wheel
stationary

System voltage

idling

Steering wheel
turning

0 – 3 V

55

Injector driver relay

Ignition switch: OFF

0 – 0.1 V

Ignition switch: ON

0.5 – 1.0 V

56

Throttle valve control
servo relay

Ignition switch: OFF

0 – 0.3 V

servo relay

Ignition switch: ON

0.5 – 1.0 V

57

Engine control relay

Ignition switch: OFF

0 – 3 V

Ignition switch: ON

System voltage

60

Back-up power source

Ignition switch: OFF

System voltage

61

Air flow sensor

Engine: Idling

2.2 – 3.2 V

Engine: 2,500 r/min

62

Intake air temperature
sensor

Ignition switch:
ON

Intake air temper-
ature:  0



C

3.2 – 3.8 V

Intake air temper-
ature: 20



C

2.3 – 2.9 V

Intake air temper-
ature: 40



C

1.5 – 2.1 V

Intake air temper-
ature: 80



C

0.4 – 1.0 V

63

Stop lamp switch

Depress the brake pedal.

System voltage

Release the brake pedal.

0 – 3 V

68

Ignition switch-ST

Engine: Cranking

8 V or more

71

Oxygen sensor (front)

Engine: Warm up, and then hold the
engine speed at 2,500 r/min (Use a
digital voltmeter).

0 

↔

 0.8 V alternates.

74

Brake vacuum sensor

Engine: Stop the engine from idle
speed, turn the ignition switch ON,
and then depress the brake pedal
several times.

Voltage increases

76

Air flow sensor reset
signal

Engine: Idling

0 – 1 V

signal

Engine: 3,000 r/min

6 – 9 V

GDI  – 

Troubleshooting

13A-104

Terminal No.

Normal condition

Check requirements (engine condition)

Check item

78

Throttle position sensor
(2nd channel)

Ignition switch:
ON

Release the
accelerator pedal.

4.0 – 4.8 V

Depress the
accelerator pedal
fully.

0.1 – 1.1 V

79

Accelerator pedal position
switch

Ignition switch:
ON

Release the
accelerator pedal.

0 – 1 V

Depress the
accelerator pedal
fully.

4 V or more

80

Vehicle speed sensor



Ignition switch: ON



Move the vehicle forward.

 0 

↔

 system voltage

alternates.

83

A/C switch

Engine: Idling

A/C switch: OFF

0 – 3 V

A/C switch: ON
(Compressor is
operating)

System voltage

88

Small lamp switch

Lighting switch: OFF

0 – 3 V

Lighting switch: ON (Taillamp: ON)

System voltage

89

Oxygen sensor heater
(front)

Engine: Idling

0 – 3 V

(front)

Engine: 3,500 r/min

System voltage

90

Oxygen sensor heater
(rear)

Engine: Idling

0 – 3 V

(rear)

Engine: 3,500 r/min

System voltage

92

Fuel pressure sensor

Engine: Idling

0.3  – 4.7 V

94

Accelerator pedal position
sensor (1st channel)

Ignition switch:
ON

Release the acceler-
ator pedal.

0.935  – 1.135 V

*

1

Depress the
accelerator pedal
fully.

4.1 V or more

*

2

96

Injector open circuit check
signal

Engine: Increase engine speed from
idle speed to 4,000 r/min.

Decreases slightly (approx.
0.7 V) from 4.5 V – 5.0 V.

97

A/C thermo sensor



Temperature at sensing portion:
Approx 25

°

C



Ignition switch: ON

2.0 – 2.9 V

99

Ignition switch-IG

Ignition switch: ON

System voltage

NOTE
Check if the difference in output between *1 and *2 is 4 V or more.

 

 

 

 

 

 

 

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