Mitsubishi Space Star. Manual — part 117
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T>
23-35
INVECS-
II
CANCEL COMMAND
Item No.
Item
Content
Remarks
14
INVECS-
II
Stop the INVECS-
II
control and change gears
according to the standard shift pattern.
Use this function when carrying
out procedure 8 in the road
tests.
CHECK AT ENGINE-A/T-ECU TERMINALS
Terminal No.
Check item
Check requirement
Standard value
45
Crank angle sensor
Engine: Idling
2.0 - 2.4 V
50
A/T control relay
Ignition switch: OFF
0 V
Ignition switch: ON
System voltage
66
Backup power supply
Ignition switch: OFF
System voltage
76
Earth
Aiways
0 V
77
Solenoid valve power supply
Ignition switch: OFF
0 V
Ignition switch: ON
System voltage
80
Vehicle speed sensor
When stopped
0 V
Move forward slowly
0
→
5 V flashing
81
Sensor earth
Always
0 V
83
A/C compressor load signal
A/C switch: OFF
0 V
A/C switch: ON
0 V
84
Diagnosis control
-
-
85
Diagnosis output
Normal (No diagnosis code output)
0
→
5 V flashing
88
Earth
Aiways
0 V
89
Solenoid valve power supply
Ignition switch: OFF
0 V
Ignition switch: ON
System voltage
95
Accelerator pedal position
sensor (APS)
Accelerator pedal: Released (Engine stopped)
0.5 - 1.0 V
sensor (APS)
Accelerator pedal: Depressed (Engine
stopped)
4.5 - 5.0 V
97
Earth
Aiways
0 V
101
Inhibitor switch P
Selector lever position: P
System voltage
Selector lever position: Other than above
0 V
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T>
23-36
Terminal No.
Standard value
Check requirement
Check item
102
Inhibitor switch D
Selector lever position: D
Battery voltage
Selector lever position: Other than above
0 V
103
Input shaft speed sensor
Measure between terminal No. 31 and No.43
by an oscilloscope.
Engine: 2,000 r/min
Selector lever position: Sports mode (3rd
gear)
Refer to P.23-38,
Oscilloscope in-
spection procedure.
104
Output shaft speed sensor
Measure between terminal No. 32 and No.43
by an oscilloscope.
Engine: 2,000 r/min
Selector lever position: Sports mode (3rd
gear)
Refer to P.23-38,
Oscilloscope in-
spection procedure.
105
1st gear shift indicator lamp
Gear: 1st gear
System voltage
Gear: Other than above
0 V
106
Second solenoid valve
Selector lever position: Sports mode (2nd
gear)
System voltage
Selector lever position: P
Approx. 7 - 9 V
107
Damper clutch control sole-
noid valve
Selector lever position: Sports mode (1st gear)
System voltage
noid valve
Selector lever position: Sports mode (50 km/h
in 3rd gear)
Other than
system voltage
108
Inhibitor switch R
Selector lever position: R
System voltage
Selector lever position: Other than above
0 V
109
Select switch
Selector lever position: Sports mode
System voltage
Selector lever position: Other than above
0 V
110
Down shift switch
Selector lever position: Downshift and lever
held
System voltage
Selector lever position: Other than above
0 V
115
Wide open throttle switch
Accelerator pedal: Released
4.5 - 5.5 V
Accelerator pedal: Depressed
Less than 0.4 V
117
3rd gear shift indicator lamp
Gear: 3rd gear
System voltage
Gear: Other than above
0 V
118
2nd gear shift indicator lamp
Gear: 2nd gear
System voltage
Gear: Other than above
0 V
120
Underdrive solenoid valve
Selector lever position: Sports mode (1st gear)
System voltage
Selector lever position: P
Approx. 7 - 9 V
121
Inhibitor switch N
Selector lever position: N
System voltage
Selector lever position: Other than above
0 V
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T>
23-37
Terminal No.
Standard value
Check requirement
Check item
122
Up shift switch
Selector lever position: Upshift and lever held
System voltage
Selector lever position: Other than above
0 V
123
Stop lamp switch
Brake pedal: Depressed
System voltage
Brake pedal: Released
0 V
124
A/T fluid temperature sensor
A/T fluid temperature: 20
C (68
F)
3.8 - 4.0 V
A/T fluid temperature: 40
C (104
F)
3.2 - 3.4 V
A/T fluid temperature: 80
C (176
F)
1.7 - 1.9 V
128
4th gear shift indicator lamp
Gear: 4th gear
System voltage
Gear: Other than above
0 V
129
Low-reverse solenoid valve
Selector lever position: D (1st gear)
System voltage
Selector lever position: D (2nd gear)
Approx. 7 - 9 V
130
Overdrive solenoid valve
Selector lever position: Sports mode (3rd
gear)
System voltage
Selector lever position: P
Approx. 7 - 9 V
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T>
23-38
OSCILLOSCOPE INSPECTION PROCEDURE
Check item
Check requirement
Normal condition
(Waveform sample)
Crank angle sensor
Selector lever position: N
Idling (Vehicle stopped)
Waveform A
Input shaft speed
sensor
Selector lever position: Sports
mode
Driving at constant speed of 50
km/h in 3rd gear
(Engine: 1 800
2 100 r/min)
Waveform B
Output shaft
speed sensor
(Engine: 1,800 – 2,100 r/min)
Vehicle speed sensor
Low reverse
solenoid valve
Ignition switch: ON
Selector lever position: P
/
Force drive each solenoid valve
(Actuator test)
Waveform C
Underdrive solenoid
valve
Engine: 0 r/min
Vehicle speed: 0 km/h
(Vehicle stopped)
Second solenoid
valve
(Vehicle sto
ed)
Throttle (Accelerator) opening
angle: Less than 1 V
Overdrive solenoid
valve
Damper clutch
control solenoid
valve
Waveform sample
Waveform A
(ms)
(V)
0
5
Waveform B
(ms)
(V)
0
5
Waveform C
(ms)
(V)
60
40
20
0
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