Mitsubishi Lancer Evolution IX. Manual - part 501

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-35

STEP 5. Check the following harness wire.

The wire between lateral G-sensor connector D-37 
(terminal 1) and junction block connector C-211 (ter-
minal 2)

Q: Is the harness wire damaged?

YES : 

Repair or replace it and then go to Step 11.

NO : 

Go to Step 11.

STEP 6. Check the following connectors.

•

Lateral G-sensor connector D-37

•

Intermediate connector C-122

•

ABS-ECU connector B-118
Check the connectors for loose, corroded or dam-
aged terminals, or terminals pushed back in the con-
nector.

Q: Are the connectors and terminals in good 

condition?
YES : 

Go to Step 7.

NO : 

Repair it and then go to Step 11.

AC208854AF

Connector: D-37

D-37 (B)

Harness side

3

1

2

AC211269

Connector: C-211 

AL

Junction block
(Front view)

Harness side

4

6 5

3

2

1

AC208854AF

Connector: D-37

D-37 (B)

Harness side

3

1

2

AC211265 DD

Connector: C-122

C-122 (L)

2

1

3

13

12

14

21

10

5

4

6

16

15

17

7 8 9

19

18

20

11

22

AC211901AD

B-118 (B)

Connector: B-118

28

32

34

12

11

33

30

21

9

10

22

31

7

8

29

20 19

24

2

26

4

5

6

27

18 17

3

25

16 15

1

23

13

14

Harness side

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-36

STEP 7. Check the following harness wire.

The wire between lateral G-sensor connector D-37 
(terminal 3) and ABS-ECU connector B-118 (terminal 
24)

Q: Is the harness wire damaged?

YES : 

Repair or replace it and then go to Step 11.

NO : 

Go to Step 11.

STEP 8. Check lateral G-sensor output voltage.

(1) Disconnect connector D-37, and then connect 

special tool harness set (MB991348) between 
terminals of the disconnected connectors.

(2) Turn the ignition switch to the "ON" position.
(3) Measure the voltage between terminal 2 and 

earth.

OK: 

When the lateral G-sensor is placed on a 

level plane: 2.4 

− 2.6 volts

When the lateral G-sensor is placed with its 

label positioned as shown: 3.4 

− 3.6 volts

Q: Is the lateral G-sensor output voltage normal?

YES : 

Go to Step 9.

NO : 

Replace the lateral G-sensor (Refer to 

P.35B-148

). Then go to Step 11.

AC208854AF

Connector: D-37

D-37 (B)

Harness side

3

1

2

AC211901AD

B-118 (B)

Connector: B-118

28

32

34

12

11

33

30

21

9

10

22

31

7

8

29

20 19

24

2

26

4

5

6

27

18 17

3

25

16 15

1

23

13

14

Harness side

AC103662AP

MB991348

Connector: D-37 (Harness side)

Label

Label

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-37

STEP 9. Check the following connectors.

•

Lateral G-sensor connector D-37

•

Intermediate connector C-122

•

ABS-ECU connector B-118
Check the connectors for loose, corroded or dam-
aged terminals, or terminals pushed back in the con-
nector.

Q: Are the connectors and terminals in good 

condition?
YES : 

Go to Step 10.

NO : 

Repair it and then go to Step 11.

STEP 10. Check the following harness wire.

The wire between lateral G-sensor connector D-37 
(terminal 2) and ABS-ECU connector B-118 (terminal 
14)

Q: Is the harness wire damaged?

YES : 

Repair or replace it and then go to Step 11.

NO : 

Replace the brake modulator hydraulic unit 
(integrated with ABS-ECU) (Refer to 

P.35B-143

). Then go to Step 11.

AC208854AF

Connector: D-37

D-37 (B)

Harness side

3

1

2

AC211265 DD

Connector: C-122

C-122 (L)

2

1

3

13

12

14

21

10

5

4

6

16

15

17

7 8 9

19

18

20

11

22

AC211901AD

B-118 (B)

Connector: B-118

28

32

34

12

11

33

30

21

9

10

22

31

7

8

29

20 19

24

2

26

4

5

6

27

18 17

3

25

16 15

1

23

13

14

Harness side

AC208854AF

Connector: D-37

D-37 (B)

Harness side

3

1

2

AC211901AD

B-118 (B)

Connector: B-118

28

32

34

12

11

33

30

21

9

10

22

31

7

8

29

20 19

24

2

26

4

5

6

27

18 17

3

25

16 15

1

23

13

14

Harness side

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-38

STEP 11. Check whether the diagnosis code is 
reset.

Check again if the diagnosis code is set.
(1) Turn the ignition switch to the "ON" position.

(2) Erase the diagnosis code.
(3) Turn the ignition switch to the "LOCK" (OFF) 

position.

(4) Turn the ignition switch to the "ON" position.
(5) Check if the diagnosis code is set.
(6) Turn the ignition switch to the "LOCK" (OFF) 

position.

Q: Does diagnosis code No.71 reset?

YES : 

Start over at Step 1.

NO : 

The procedure is complete.

AC207179AB

M.U.T.-II

16-PIN

<Using the M.U.T.-II>

AC210056

AC

MB991911

16-PIN

MB991827

MB991824 

<Using the M.U.T.-III>