Mitsubishi Space Star. Manual - part 47

GDI  – 

Troubleshooting

13A-115

Terminal
No.

Normal condition

Check condition (Engine condition)

Check item

83

A/C switch 1

Engine: Idling

A/C switch: OFF

0 – 3 V

A/C switch: ON (Compres-
sor is operating)

System voltage

86

Small lamp switch

Lighting switch: OFF

0 – 3 V

Lighting switch: Tail light position

System voltage

87

Sensor applied voltage

Ignition switch: ON

4.5 – 5.5 V

93

Fuel pressure sensor

Engine: Idling

0.3 – 4.7 V

95

Accelerator pedal posi-
tion sensor (1st chan-
nel)

Ignition switch: ON

Release the accelerator
pedal.

0.985 – 1.085 V

nel)

Depress the accelerator
pedal fully.

4.0 V or higher

96

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

98

Ignition switch-IG

Ignition switch: ON

System voltage

123

Stop lamp switch

Depress the brake pedal.

System voltage

Release the brake pedal.

0 – 3 V

CHECK CHART FOR RESISTANCE AND CONTINUITY
BETWEEN TERMINALS

1.

Turn the ignition switch to OFF.

2.

Disconnect the engine-A/T-ECU connector.

3.

Measure the resistance and check for continuity between
the terminals of the engine-A/T-ECU harness-side
connector while referring to the check chart.

NOTE
(1) When measuring resistance and checking continuity,

a harness for checking contact pin pressure should
be used instead of inserting a test probe.

(2) Checking need not be carried out in the order given

in the chart.

Caution
If the terminals that should be checked are mistaken,
or if connector terminals are not correctly shorted
to earth, damage may be caused to the vehicle wiring,
sensors, engine-A/T-ECU and/or ohmmeter.
Be careful to prevent this!

4.

If the ohmmeter shows any deviation from the standard
value, check the corresponding sensor, actuator and
related electrical wiring, and then repair or replace.

5.

After repair or replacement, recheck with the ohmmeter
to confirm that the repair or replacement has corrected
the problem.

GDI  – 

Troubleshooting

13A-116

Engine-A/T-ECU Harness Side Connector Terminal Arrangement

Terminal No.

Check item

Standard value, normal condition (check conditions)

3 – 41

Oxygen sensor heater (front)

4.5 – 8.0 

Ω

 (at 20



C)

26 –  41

Oxygen sensor heater (rear)

11 – 18 

Ω

 (at 20



C)

34 – 41

Purge control solenoid valve

28 – 36 

Ω

 (at 20



C)

Between terminal
42 and body earth

Earth

Continuity (0 

Ω

)

Between terminal
48 and body earth

51 – 41

EGR valve (A)

15 – 20 

Ω

 (at 20



C)

53 – 41

EGR valve (C)

60 – 41

EGR valve (B)

62 – 41

EGR valve (D)

44 – 81

Engine coolant temperature sensor

5.1 – 6.5 k

Ω

 (When coolant temperature is 0



C)

2.1 – 2.7 k

Ω

 (When coolant temperature is 20



C)

0.9 – 1.3 k

Ω

 (When coolant temperature is 40



C)

0.26 – 0.36 k

Ω

 (When coolant temperature is 80



C)

64 – 81

Intake air temperature sensor

5.3 – 6.7 k

Ω

 (When intake air temperature is 0



C)

2.3 – 3.0 k

Ω

 (When intake air temperature is 20



C)

1.0 – 1.5 k

Ω

 (When intake air temperature is 40



C)

0.30 – 0.42 k

Ω

 (When intake air temperature is 80



C)

79 – 81

Accelerator pedal position switch

Continuity (when the accelerator pedal is released)

No continuity (when the accelerator pedal is
depressed slightly)

GDI  – 

Troubleshooting

13A-117

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+)



Ignition switch: ON



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–)



Ignition switch: ON



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

19

valve control servo

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.

4.2 – 4.9 V

20

Accelerator pedal position
sensor (2nd channel)

Ignition switch:
ON

Release the
accelerator pedal.

0.985 – 1.085 V*

1

Depress the
accelerator pedal
fully.

4 V or more*

1

NOTE:
Check that the voltage difference between *

1

 and *

2

 is 4 V or more.

GDI  – 

Troubleshooting

13A-118

INSPECTION PROCEDURE USING AN ANALYZER

AIR FLOW SENSOR (AFS)

The followings have been changed from the previous
description.

Alternate Method (Test harness not available)

<Vehicles with M/T>

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

<Vehicles with A/T>

Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 65.

CAMSHAFT POSITION SENSOR AND CRANK ANGLE
SENSOR

The measurement method has been changed from the previous
description.

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: MD998478) in between.

4.

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

Alternate Method (Test harness not available)

<Vehicles with M/T>

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.)

<Vehicles with A/T>

1.

Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 56. (When checking the
camshaft position sensor signal wave pattern.)

2.

Connect the analyzer special patterns pickup to
engine-A/T-ECU terminal 45. (When checking the crank
angle sensor signal wave pattern.)

Crank 
angle 
sensor connector

Camshaft position sensor connector

Analyzer

Special patterns
pick-up