Mitsubishi Galant. Manual — part 518
ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM(ABS)
35B-5
4. Disconnect special tool MB991529.
Erasing ABS Diagnostic Trouble Codes
Using Scan Tool MB991502
Required Special Tool:
•
MB991502: Scan Tool (MUT-II)
CAUTION
To prevent damage to scan tool MB991502, always turn the
ignition switch to the "LOOK" (OFF) position before
connecting or disconnecting the scan tool.
1. Connect scan tool MB991502 to the data link connector.
2. Turn the ignition switch to the "ON" position.
3. Use scan tool MB991502 to erase ABS diagnostic trouble
codes.
4. Turn the ignition switch to the "LOOK" (OFF) position.
5. Disconnect scan tool MB991502.
By Special Operation for Brake Pedal
Required Special Tool:
•
MB991529: Diagnostic Trouble Code Check Harness
1. Use special tool MB991529 to ground number 1 terminal of
the data link connector.
NOTE: If the ABS-ECU functions have stopped due to the
fail-safe function, the diagnostic trouble code cannot be
erased.
WHEN THE DIAGNOSTIC TROUBLE CODE NO.24
IS OUTPUT
WHEN NO DIAGNOSTIC TROUBLE CODE IS OUT-
PUT
ACX01777
ILLUMINATED
SWITCHED
OFF
PAUSE
TIME 3s
TENS
SIGNAL
PLACE
DIVISION
2s
UNITS
SIGNAL
1.5s
0.5s
0.5s
AB
ACX01778
ILLUMINATED
SWITCHED
OFF
0.25s
AB
AC003081 AB
16 PIN
MB991502
AC003716 AB
DATA LINK
CONNECTOR
MB991529
ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM(ABS)
35B-6
2. Depress the brake pedal and hold it.
3. Turn the ignition switch to the "ON" position.
4. 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.
5. Turn the ignition switch to the "LOOK" (OFF) position.
6. Disconnect special tool MB991529.
DIAGNOSTIC TROUBLE CODE CHART
M1352011300076
Follow the inspection chart that is appropriate for the
diagnostic trouble code.
AC000937
IGNITION SWITCH
ON
OFF
STOPLIGHT SWITCH
ON
OFF
ABS WARNING LIGHT
ON
OFF
DIAGNOSTIC TROUBLE
CODE MEMORY
3 s
WITHIN
3 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
WITH-
IN 1 s
1 s
1 s
ERASING
COMPLETED
AB
1ST
2ND
3RD
4TH
5TH
6TH
7TH
8TH
9TH
10TH
DIAGNOSTIC
TROUBLE CODE NO.
INSPECTION ITEM
DIAGNOSTIC CONTENT REFERENCE PAGE
11
Front right wheel speed
sensor
Open circuit or short cir-
cuit
12
Front left wheel speed
sensor
13
Rear right wheel speed
sensor
14
Rear left wheel speed
sensor
16
Power supply system
ABS-ECU power supply
voltage below or above
the standard value. Not
displayed if the voltage
recovers.
Check the battery. (Refer
to GROUP 54A, Battery
−
On-vehicle Service -
Battery Check
21Front right wheel speed sensor
22
Front left wheel speed sensor
23
Rear right wheel speed sensor
24
Rear left wheel speed sensor
38
Stoplight switch system
ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM(ABS)
35B-7
41Solenoid valve inside hy-
draulic unit
Open circuit or short cir-
cuit
42
ABS-ECU
Replace the hydraulic unit
(Integrated with ABS-
ECU)
51Hydraulic unit solenoid valve relay open or short cir-
cuit
53
Malfunction of hydraulic unit
63
ABS-ECU
Replace the hydraulic unit
(Integrated with ABS-
ECU)
DIAGNOSTIC
TROUBLE CODE NO.
INSPECTION ITEM
DIAGNOSTIC CONTENT REFERENCE PAGE
ANTI-SKID BRAKING SYSTEM (ABS) DIAGNOSIS
TSB Revision
ANTI-LOCK BRAKING SYSTEM(ABS)
35B-8
DIAGNOSTIC TROUBLE CODE PROCEDURES
DTC 11, 12, 13, 14: Wheel Speed Sensor (Open circuit or short circuit)
DTC 21, 22, 23, 24: Wheel Speed Sensor
AC003851
Wheel Speed Sensor Circuit
AB
AC003855AB
CONNECTORS: A-03, A-22, A-36
A-36
A-03
A-22
AC003856AB
CONNECTOR: C-05
COMBINATION
METER
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