Mitsubishi Grandis. Manual — part 863

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-119

63

Shift position

Selector lever
position: Sport mode

Driving at a constant
speed of 10 km/h in 1st

1st

Driving at a constant
speed of 20 km/h in 2nd

2nd

Driving at a constant
speed of 50 km/h in 3th

3rd

Driving at a constant
speed of 60 km/h in 4th

4th

Selector lever
position: P

Driving at a constant
speed of 5 km/h in reverse

P, N

Selector lever
position: R

Driving at a constant
speed of 5 km/h in reverse

REV

Selector lever
position: N

Driving at a constant
speed of 5 km/h in reverse

P, N

65

A/C compressor
relay

Engine: Idling

A/C switch: ON

ON

A/C switch: OFF

OFF

67

Select switch

Ignition switch: ON
Engine: Stopped

Selector lever position: D

OFF

Selector lever position:
Select sport mode

ON

Selector lever position:
Upshift and hold the
selector lever

ON

Selector lever position:
Downshift and hold the
selector lever

ON

68

Upshift switch

Ignition switch: ON
Engine: Stopped

Selector lever position: D

OFF

Selector lever position:
Select sport mode

OFF

Selector lever position:
Upshift and hold the
selector lever

ON

Selector lever position:
Downshift and hold the
selector lever

OFF

69

Downshift switch

Ignition switch: ON
Engine: Stopped

Selector lever position: D

OFF

Selector lever position:
Select sport mode

OFF

Selector lever position:
Upshift and hold the
selector lever

OFF

Selector lever position:
Downshift and hold the
selector lever

ON

Data list
No.

Check item

Inspection conditions

Normal condition

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-120

ACTUATOR TEST JUDGMENT VALUE

M1231008200367

INVECS-II CANCEL COMMAND

M1231009500349

CHECK AT ENGINE-A/T-ECU TERMINALS

M1231008400372

Item No.

Inspection item

Test description

Inspection
condition

Normal status

01

LR solenoid valve

Actuate solenoid valve

indicated by MUT-III
for 5 seconds at duty
ratio of 50%.
Other remaining
solenoid valve are not
ON.

Ignition switch:

ON

Selector lever

position: P

Engine: Stopped
Accelerator pedal:

Released

When solenoid valve is
actuated, operating
sound is audible.

02

UD solenoid valve

03

2ND solenoid valve

04

OD solenoid valve

06

DCC solenoid valve

07

1st indicator lamp

Illuminate shift
indicator indicated by
MUT-III for 3 seconds

Shift indicator is
displayed.

08

2nd indicator lamp

09

3rd indicator lamp

10

4th indicator lamp

12

A/T control relay

A/T control relay is
OFF for three
seconds.

Data list No.54
During test: 0 V
Normal: System voltage
(V)

Item No.

Item

Contents

NOTE

14

INVECS-II

Stop the INVECS-II control and
changes gear according to the
standard shift pattern.

Use this procedure when carrying out road
test procedure 8.
If the ignition switch is turned from OFF to
ON to OFF, this function restores the
INVECS-II control.

AC312699

1

2

3

4

5

6

7

8

9 10

12

11

13

14

15

16 17 18

19 20

21

22

23 24 25

26 27

31 32

33

34

35 36 37 38 39 40 41 42

43

44 45 46 47 48

50

51

52 53

54 55

49

56

57

58

61 62

63 64

65 66 67 68 69 70 71 72 73

74 75 76 77 78 79 80 81 82

83 84

85 86 87

88 89

91 92

93 94 95

96 97 98 99 100101102103

104

105106

107108109

110111112

113114

115116117

118119 120

121122

123 124

125126127128129 130 131 132 133

134135

136137 138 139 140 141

142143

144

145 146

AB

C-110

C-111

C-112

C-113

C-114

Terminal
No.

Check item

Inspection condition

Standard value

39

Stoplamp switch

• Brake pedal: Depressed

System voltage

• Brake pedal: Released

1 V or less

64

Input shaft speed
sensor

• Measure between terminals 64 and 88

with an oscilloscope.

• Engine: 2,000 r/min

• Selector lever position: Sport mode

(3rd gear)

Refer to

P.23A-123

,

Inspection Procedure
Using an Oscilloscope.

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-121

66

Inhibitor switch: P

• Ignition switch: ON

• Selector lever position: P

System voltage

• Ignition switch: ON

• Selector lever position: Other than

above

1 V or less

67

Inhibitor switch: R

• Ignition switch: ON

• Selector lever position: R

System voltage

• Ignition switch: ON

• Selector lever position: Other than

above

1 V or less

68

Shift switch (Down)

• Ignition switch: ON

• Selector lever operation: Downshift and

hold the selector lever

System voltage

• Ignition switch: ON

• Selector lever operation: Other than

above

1 V or less

70

Crankshaft position
sensor

Engine: Idling

1.5

− 2.5 V

73

Output shaft speed
sensor

• Measure between terminals 73 and 88

with an oscilloscope.

• Engine: 2,000 r/min

• Selector lever position: Sport mode

(3rd gear)

Refer to

P.23A-123

,

Inspection Procedure
Using an Oscilloscope.

75

Inhibitor switch: N

• Ignition switch: ON

• Selector lever position: N

System voltage

• Ignition switch: ON

• Selector lever position: Other than

above

1 V or less

76

Inhibitor switch: D

• Ignition switch: ON

• Selector lever position: D

System voltage

• Ignition switch: ON

• Selector lever position: Other than

above

1 V or less

77

Shift switch (Up)

• Ignition switch: ON

• Selector lever operation: Upshift and

hold the selector lever

System voltage

• Ignition switch: ON

• Selector lever operation: Other than

above

1 V or less

79

Vehicle speed signal

• Measure between terminals 79 and

earth with an oscilloscope.

• Engine: 2,000 r/min

• Selector lever position: Sport mode

(3rd gear)

Refer to

P.23A-123

,

Inspection Procedure
Using an Oscilloscope.

Terminal
No.

Check item

Inspection condition

Standard value

TROUBLESHOOTING <A/T>

AUTOMATIC TRANSMISSION (FF)

23A-122

85

Select switch

• Ignition switch: ON

• Selector lever position: Sport mode

System voltage

• Ignition switch: ON

• Selector lever position: Other than

above

1 V or less

119

A/T fluid temperature
sensor

• Ignition switch: ON

• A/T fluid temperature: 20°C

3.8

− 4.0 V

• Ignition switch: ON

• A/T fluid temperature: 40°C

3.2

− 3.4 V

• Ignition switch: ON

• A/T fluid temperature: 80°C

1.7

− 1.9 V

123

Solenoid valve power
supply

Ignition switch: LOCK (OFF)

1 V or less

Ignition switch: ON

System voltage

124

Solenoid valve power
supply

Ignition switch: LOCK (OFF)

1 V or less

Ignition switch: ON

System voltage

127

A/T control relay

Always

1 V or less

128

LR solenoid valve

• Engine: Idling

• Selector lever position: P

System voltage

• Engine: Idling

• Selector lever position: Sport mode

(2nd gear)

6

− 9 V

130

DCC clutch solenoid
valve

• Engine: Idling

• Selector lever position: P

System voltage

131

Earth

Always

1 V or less

136

2ND solenoid valve

• Engine: Idling

• Selector lever position: Sport mode

(2nd gear)

System voltage

• Engine: Idling

• Selector lever position: P

6

− 9 V

137

UD solenoid valve

• Engine: Idling

• Selector lever position: Sport mode

(1st gear)

System voltage

• Engine: Idling

• Selector lever position: P

6

− 9 V

138

OD solenoid valve

• Engine: Idling

• Selector lever position: Sport mode

(3rd gear)

System voltage

• Engine: Idling

• Selector lever position: P

6

− 9 V

139

Earth

Always

1 V or less

Terminal
No.

Check item

Inspection condition

Standard value