Mitsubishi Colt Ralliart. Manual — part 189

TROUBLESHOOTING <CVT>

CVT

23A-99

STEP 6. Check the harness between inhibitor
switch connector A-119 terminal No.3 (P), 7 (R), 4
(N), 1 (D), 5 (Ds), 2 (L) and engine-CVT-ECU
connector A-114 terminal No.46 (P), 48 (R), 63 (N),
62 (D), 61 (Ds), 47 (L).

AC103395

AF

Oil level gauge

A-119 (B)

Connector: A-119

Harness side

AC403088AG

A-114

Connector: A-114

6

4

2

5

3

1

9

7

8

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

35

36

37

38

39

40

41

42

43

44

45

46

47

48

49

50

51

52

53

54

55

56

57

58

59

60

61

62

63

64

65

66

L

A-114 Harness side connector

Engine-CVT-ECU

Battery

(GR)

Check the output line for short-circuited or open cir-
cuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

STEP 7. M.U.T.-III data list
Item 26: Inhibitor switch (Refer to data list reference
table

P.23A-123

).

Q: Is the check result normal?

YES :

Intermittent malfunction (Refer to GROUP

00

− How to Cope with Intermittent

Malfunction

P.00-13

).

NO :

Replace the engine-CVT-ECU.

STEP 8. Connectors check: A-17 intermediate
connector, B-110, B-129 J/B connector.

AC313811 AG

Connector: A-17

A-17 (B)

AC313824AM

Connector: B-110

Harness side

Junction block (Front view)

AC313826 AJ

Connector: B-129

Junction Block (Rear view)

Harness side

Check for the contact with terminals.

Q: Is the check result normal?

YES :

Go to Step 9.

NO :

Repair the defective connector.

Main

Index

Group

TOC

TROUBLESHOOTING <CVT>

CVT

23A-100

STEP 9. Check the harness between inhibitor
switch connector A-119 terminal No.8 and J/B
connector B-129 terminal No.3.

AC103395

AF

Oil level gauge

A-119 (B)

Connector: A-119

Harness side

AC313826 AJ

Connector: B-129

Junction Block (Rear view)

Harness side

Check the power supply line for short-circuited or
open circuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

Main

Index

Group

TOC

TROUBLESHOOTING <CVT>

CVT

23A-101

Code No.53, 54 Stop Lamp Switch System

AC405395

ENGINE-
CVT-ECU

STOP LAMP
SWITCH

Wire colour code
B : Black LG : Light green
G : Green L : Blue
W : White Y : Yellow
SB : Sky blue BR : Brown
O : Orange GR : Gray
R : Red P : Pink V : Violet

FUSIBLE
LINK

1

Stop Lamp Switch System Circuit

OPERATION

The stop lamp switch judges whether the brake
pedal is depressed or released, and sends the infor-
mation to the engine-CVT-ECU.

DIAGNOSIS CODE SET CONDITIONS

• If the stop lamp switch remains on for five min-

utes when the vehicle is being driven (secondary
speed is 750 r/min or more), code No.53 will be
set.

• If the stop lamp switch is not turned on although

the secondary speed rises to 2,500 r/min or more
and then reduces to 250 r/min or less 15 cycles,
code No.54 will be set.

PROBABLE CAUSES

• Malfunction of brake pedal

• Malfunction of stop lamp switch

• Damaged harness wires and connectors

• Malfunction of the engine-CVT-ECU

DIAGNOSIS PROCEDURE

STEP 1. Check that the stop lamps illuminate and
extinguish normally.
The stop lamps should illuminate when the brake
pedal is depressed, and extinguish when released.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Go to Step 2.

STEP 2. Check the brake pedal height.
Refer to GROUP 35A

− On-vehicle Service, Brake

Pedal Check and Adjustment (Refer to

P.35A-7

).

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Adjust the brake pedal height.

Main

Index

Group

TOC

TROUBLESHOOTING <CVT>

CVT

23A-102

STEP 3. Check the stop lamp switch.
Refer to GROUP 35A

− Brake Pedal and Stop Lamp

Switch Continuity Check (Refer to

P.35A-22

).

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the stop lamp switch.

STEP 4. M.U.T.-III data list
Item 33: Stop lamp switch (Refer to data list refer-
ence table

P.23A-123

).

Q: Is the check result normal?

YES :

Intermittent malfunction (Refer to GROUP

00

− How to Cope with Intermittent

Malfunction

P.00-13

).

NO :

Go to Step 5.

STEP 5. Connector check: B-27 stop lamp switch
connector.

AC208412

4

3

2

1

AB

Brake pedal

Connector: B-27

Harness side

Check for the contact with terminals.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the defective connector.

STEP 6. Measure the voltage at stop lamp switch
connector B-27.

AC208412

4

3

2

1

AB

Brake pedal

Connector: B-27

Harness side

Disconnect the connector, and measure the voltage
between terminal No.2 and earth at the harness side.

OK: System voltage

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Go to Step 12.

STEP 7. Measure the voltage at engine-CVT-ECU
connector A-08.
(1) Connect stop lamp switch connector B-27.

AC403088AI

A-08

Connector: A-08

Engine-CVT-ECU

Battery

77

78

79

80

81

82

83

84

92

93

94

95

96

97

98

99

85

86

87

88

89

90

91

100

101

102

103

104

105

106

115

116

117

118

119

120

121

107

108

109

110

111

112

113

114

130

131

132

133

134

135

136

122

123

124

125

126

127

128

129

72 71

74 73

76 75

R

A-08 Check connector (special tool)

(GR)

(2) Disconnect the engine-CVT-ECU connector, and

connect the special tool Power plant ECU check
harness (MB991987).

Main

Index

Group

TOC