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
.
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>
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>
21
Front right wheel speed sensor system
<LH drive vehicle>
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>
41
Front right solenoid valve system
<LH drive vehicle>
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>
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>
63
ABS-ECU abnormality
Replace the brake
modulator hydraulic unit
(Integrated with
ABS-ECU).
71
Lateral G-sensor system
<LH drive vehicle>
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>
82
Steering wheel sensor (ST-2) system
83
Steering wheel sensor (ST-N) system
Diagnosis code
No.
Inspection item
Reference page
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