Mitsubishi Pajero Pinin. Manual - part 54

 

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Mitsubishi Pajero Pinin. Manual - part 54

 

 

GDI – 

Troubleshooting

13A-82

Engine-ECU Harness Side Connector Terminal Arrangement

Terminal No.

Check item

Standard value, normal condition (check requirements)

6 – 47

EGR valve (C)

15 – 20 

 (at 20

_

C)

5 –

 47

EGR valve (D)

34 – 47

EGR valve (A)

32 – 47

EGR valve (B)

16 – 47

Purge control solenoid valve

36 – 44 

 (at 20

_

C)

44 – 72

Engine coolant temperature sensor

5.1 – 6.5 k

 (when engine coolant temperature is 0

_

C)

2.1 – 2.7 k

 (when engine coolant temperature is 20

_

C)

0.9 – 1.3 k

 (when engine coolant temperature is 40

_

C)

0.26 – 0.36 k

 (when engine coolant temperature is

80

_

C)

46 – Body earth

Earth

Continuity (0 

)

58 – Body earth

62 – 72

Intake air temperature sensor

5.3 – 6.7 k

 (when intake air temperature is 0

_

C)

2.3 – 3.0 k

 (when intake air temperature is 20

_

C)

1.0 – 1.5 k

 (when intake air temperature is 40

_

C)

0.30 – 0.42 k

 (when intake air temperature is 80

_

C)

67 – Body earth

Inhibitor switch <A/T>

Continuity (when the selector lever is at P or N range)

No continuity (when the selector lever is at a range other
than P or N)

79 – 72

Accelerator pedal position switch

Continuity (when the accelerator pedal is released)

No continuity (when the accelerator pedal is slightly
depressed)

89 – 47

Oxygen sensor heater control

11 – 18 

 (at 20

_

C)

GDI – 

Troubleshooting

13A-83

CHECK AT THE THROTTLE VALVE CONTROLLER TERMINALS

TERMINAL VOLTAGE CHECK CHART

Throttle Valve Controller Terminal Arrangement

Terminal
No.

Check items

Requirements

Normal value

1

Throttle valve control servo
(A+)

D

Ignition switch: ON

D

Accelerator pedal: Fully opened 

fully closed

Decreases slightly from
system voltage.

9

Throttle valve control servo
(B+)

fully closed

14

Throttle valve control servo
(A–)

D

Ignition switch: ON

D

Accelerator pedal: Fully closed 

fully opened

Decreases slightly (approx.
2 V) from system voltage.

15

Throttle valve control servo
(B–)

fully opened

2

Power supply to throttle
valve control servo

Ignition switch: ON

System voltage

5

Power supply

Ignition switch: ON

System voltage

6

Sensor voltage

Ignition switch: ON

4.5 – 5.5 V

7

Throttle position sensor (1st
channel)

Ignition switch:
ON

Release the
accelerator pedal.

0.45 – 0.8 V

Depress the
accelerator pedal
fully.

3.9 – 4.9 V

20

Accelerator pedal position
sensor (2nd channel)

Ignition switch:
ON

Release the
accelerator pedal.

0.7 – 1.4 V

Depress the
accelerator pedal
fully.

4 V or more

22

Ignition switch – IG

Ignition switch: ON

System voltage

GDI – 

Troubleshooting

13A-84

INSPECTION PROCEDURE USING AN ANALYZER

AIR FLOW SENSOR (AFS)

Measurement Method

1.

Disconnect the air flow sensor connector, and connect
the special tool (test harness: MB991709) in between.
(All terminals should be connected.)

2.

Connect the analyzer special patterns pickup to air flow
sensor connector terminal 3.

Alternate Method (Test harness not available)

1.

Connect the analyzer special patterns pickup to
engine-ECU terminal 61.

Standard Wave Pattern

Observation conditions

Function

Special patterns

Pattern height

Low

Pattern selector

Display

Engine r/min

Idle speed

Standard wave pattern

(V)
10

0

The time (cycle time) T is reduced when
the amount of intake air increases.

Times T1 and T2 are equal.

Time

T

T1

T2

Observation conditions  (from conditions above engine speed is increased by racing.)

Time

(V)

10

0

T

Wave Pattern Observation Points

Check that cycle time T becomes shorter and the frequency increases when the engine speed is increased.

Analyzer

Special
patterns
pickup

GDI – 

Troubleshooting

13A-85

Examples of Abnormal Wave Patterns

D

Example 1

Cause of problem

Sensor interface malfunction

Wave pattern characteristics

Rectangular wave pattern is output even when the engine
is not started.

D

Example 2

Cause of problem

Damaged rectifier or vortex generation column

Wave pattern characteristics

Unstable wave pattern with non-uniform frequency.
However, when an ignition leak occurs during acceleration,
the wave pattern will be distorted temporarily, even if the
air flow sensor is normal.

CAMSHAFT POSITION SENSOR AND CRANK ANGLE
SENSOR

Measurement Method

1.

Disconnect the camshaft position sensor connector and
connect the special tool (test harness: MB991709) in
between. (All terminals should be connected.)

2.

Connect the analyzer special patterns pickup to camshaft
position sensor terminal 2.

3.

Disconnect the crank angle sensor connector and connect
the special tool (test harness: MB991658) in between.

4.

Connect the analyzer special patterns pickup to crank
angle sensor terminal 2.

Alternate Method (Test harness not available)

1.

Connect the analyzer special patterns pickup to
engine-ECU terminal 50. (When checking the camshaft
position sensor signal wave pattern.)

2.

Connect the analyzer special patterns pickup to
engine-ECU terminal 43. (When checking the crank angle
sensor signal wave pattern.)

Standard Wave Pattern

Observation conditions

Function

Special patterns

Pattern height

Low

Pattern selector

Display

Engine r/min

Idle speed

Crank 
angle 
sensor connector

Camshaft position sensor connector

Analyzer

Special patterns
pick-up

 

 

 

 

 

 

 

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