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.

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Index

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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.

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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.

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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

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100

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115

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114

130

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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).

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