Mitsubishi Lancer Evolution IX. Manual - part 494

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-7

4. Read out a diagnosis code by observing how the 

warning lamp flashes.

5. Turn the ignition switch to the "LOCK" (OFF) 

position.

6. Disconnect special tool diagnosis code check 

harness (MB991529).

AC311052 AB

ABS warning lamp

ABS warning lamp

<L.H. drive vehicles>

<R.H. drive vehicles>

When the diagnosis code No.24 is set

When no diagnosis code is set

ACX01777

Illuminated

Switched
off

Pause
time
3 secs.

Tens
signal

Place
division
2 secs.

Units
signal

1.5 secs.

0.5 sec.

0.5 sec.

AD

ACX01778

Illuminated

Switched
off

0.25 sec.

AD

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-8

ERASING DIAGNOSIS CODES
WHEN USING THE M.U.T.-II/III

Refer to GROUP 00, How to Use Troubleshoot-
ing/Inspection Service Points 

P.00-5

.

WHEN NOT USING THE M.U.T.-II/III

NOTE: If the ABS-ECU functions have stopped due 
to the fail-safe function, the diagnosis code cannot 
be erased.
1. Turn the ignition switch to the "LOCK" (OFF) 

position.

2. Use special tool diagnosis code check harness 

(MB991529) to earth terminal number 1 of the 
diagnosis connector.

3. Depress the brake pedal and hold it.
4. Turn the ignition switch to the "ON" position.
5. After turning the ignition switch to the "ON", 

release the pedal within three seconds. Repeat 
this process of pressing and releasing the brake 
pedal 10 continuous times.

6. Turn the ignition switch to the "LOCK" (OFF) 

position.

7. Disconnect special tool diagnosis code check 

harness (MB991529).

AC211895

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16

AB

MB991529

Diagnosis connector

AC000937

Ignition switch

ON

OFF(OFF)

Stop lamp switch

ON

OFF

ABS warning lamp

ON

OFF

ABS-ECU memory

3 seconds

Within
3 seconds

Within
1
seconds

Erasing of ABS-ECU
diagnosis codes complete.

AD

1st

2nd

3rd

4th

5th

6th

7th

8th

9th

10th

Within
1
seconds

Within
1
seconds

Within
1
seconds

Within
1
seconds

Within
1
seconds

Within
1
seconds

Within
1
seconds

Within
1
seconds

Within
1
seconds

1
seconds

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-9

INSPECTION CHART FOR DIAGNOSIS 
CODE

M1352011300797

Follow the inspection chart that is appropriate for the diagnosis code.

Diagnosis code 
No.

Inspection item

Reference page

11

Front right wheel speed sensor (Open circuit or short-circuit)

<LH drive vehicle> 

P.35B-11

, <RH drive 

vehicle> 

P.35B-47

12

Front left wheel speed sensor (Open circuit or short-circuit)

13

Rear right wheel speed sensor (Open circuit or short-circuit)

14

Rear left wheel speed sensor (Open circuit or short-circuit)

16

ABS-ECU power supply system (abnormal voltage drop or 
rise)

<LH drive vehicle> 

P.35B-19

, <RH drive 

vehicle> 

P.35B-55

21

Front right wheel speed sensor system

<LH drive vehicle> 

P.35B-11

, <RH drive 

vehicle> 

P.35B-47

22

Front left wheel speed sensor system

23

Rear right wheel speed sensor system

24

Rear left wheel speed sensor system

32

Longitudinal G-sensor system

<LH drive vehicle> 

P.35B-22

, <RH drive 

vehicle> 

P.35B-58

41

Front right solenoid valve system

<LH drive vehicle> 

P.35B-29

, <RH drive 

vehicle> 

P.35B-65

42

Front left solenoid valve system

43

Rear right solenoid valve system

44

Rear left solenoid valve system

51

Valve relay ON problem

Replace the brake 
modulator hydraulic unit 
(Integrated with 
ABS-ECU).

52

Valve relay problem (stays off)

<LH drive vehicle> 

P.35B-29

, <RH drive 

vehicle> 

P.35B-65

53

Motor relay problem (stays off)

54

Motor relay ON problem

Replace the brake 
modulator hydraulic unit 
(Integrated with 
ABS-ECU).

55

Motor system (seized pump motor)

<LH drive vehicle> 

P.35B-29

, <RH drive 

vehicle> 

P.35B-65

63

ABS-ECU abnormality

Replace the brake 
modulator hydraulic unit 
(Integrated with 
ABS-ECU).

71

Lateral G-sensor system

<LH drive vehicle> 

P.35B-32

, <RH drive 

vehicle> 

P.35B-68

TROUBLESHOOTING

ANTI-SKID BRAKING SYSTEM (ABS)

35B-10

NOTE: diagnosis code No.16, 52, 63

.

•

Code No.16 is cleared from the memory by turning the ignition switch to the "ACC" position. When the 
system is properly reset, this code is also cleared from the memory.

•

Code No.52 and 63 are cleared from the memory by turning the ignition switch to the "ACC" position.

81

Steering wheel sensor (ST-1) system

<LH drive vehicle> 

P.35B-39

, <RH drive 

vehicle> 

P.35B-75

82

Steering wheel sensor (ST-2) system

83

Steering wheel sensor (ST-N) system

Diagnosis code 
No.

Inspection item

Reference page