Mitsubishi Outlander GS45X. Manual — part 391
ON-VEHICLE SERVICE
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ANTI-LOCK BRAKING SYSTEM (ABS)
35B-185
3. Confirm that the selector lever is in the "N" position, and
then start the engine.
4. When carrying out the actuator tests No. 01 to 04, perform
the actuator tests using scan tool while depressing the brake
pedal. When carrying out the actuator tests, rotate the wheel
by hands to confirm that the braking force changes.
NOTE:
.
•
While performing the actuator test, the ABS warning light
flashes at a rate of 2 Hz.
•
When ABS-ECU is disabled due to the fail-safe function,
the scan tool actuator test cannot be performed.
•
After the actuator test has been performed, the ABS
warning light and brake waning light illuminate until the
ignition switch is turned to ON again or the communica-
tion between scan tool and ABS-ECU is terminated.
5. This is indicated as shown in the above.
6. When any malfunction has been found, take a necessary
action according to the "Judgment Table."
AC608801
M.U.T.-III actuator test
(No.01, 02, 03, 04) start
M.U.T.-III actuator test
(No.01, 02, 03, 04)
M.U.T.-III actuator test
(No.01, 02, 03, 04)
Pedal operation
Depressed
Released
Solenoid valve position
Increase in pressure
Steady pressure
Reduction in pressure
Checking the brake force
Lock
Drag force when the pedal is free
Approx.
1 second
Approx.
2 seconds
Approx.
3 seconds
AC
ON-VEHICLE SERVICE
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ANTI-LOCK BRAKING SYSTEM (ABS)
35B-186
Judgment Table
7. After the inspection, turn the ignition switch to the LOCK
(OFF) position, and then disconnect scan tool.
.
Hydraulic unit installation adjustment
Refer to
.
1. Operate the pre-removal steps for the hydraulic unit.
2. Remove all brake tubes.
3. Remove the protector.
4. Loosen the mounting bolt and nut of the hydraulic unit
bracket.
5. Install all brake tubes temporarily.
6. Shake hydraulic unit to all directions with both hands to
make the hydraulic unit bracket insulator fit with the unit.
7. Install the hydraulic unit bracket with mounting bolt and nut
not to load the brake tube.
8. Install the protector.
9. Install all brake tubes securely.
NOTE: Install the flare nut taking care not to let the brake
tube turn together.
10.Operate the post-installation steps of the hydraulic unit.
Display on
scan tool
Operation
Inspection
result
Judgme
nt
Probable cause
Remedy
01 FR wheel
ABS
02 FL wheel
ABS
03 RR wheel
ABS
04 RL wheel
ABS
• Depress the brake
pedal to lock the
vehicle.
• Select the vehicle
to be inspected
using scan tool,
perform the
actuator test.
• Rotate the selected
wheel by hands to
confirm the braking
force.
Braking force
decreases for 3
seconds from
the lock status.
Normal
−
−
The wheel
does not lock
even if the
brake pedal is
depressed.
Error
Clogged brake line
other than hydraulic
unit
Check and
clean the brake
line.
Clogged hydraulic
circuit in the hydraulic
unit
Replace the
hydraulic unit
assembly.
Braking force
does not
decrease.
Faulty routing of
hydraulic unit brake
tube
Route the
brake tube
correctly.
Malfunction of
hydraulic unit solenoid
valve operation
Replace the
hydraulic unit
assembly.
ON-VEHICLE SERVICE
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ANTI-LOCK BRAKING SYSTEM (ABS)
35B-187
IN THE EVENT OF A DISCHARGED BATTERY
M1352003500804
WARNING
If the ABS is not operating, the vehicle will be unsta-
ble during braking, Do not drive the vehicle with the
ABS-ECU connector disconnected or with the ABS
not operating.
If the engine is started using a booster cable when the battery
is completely flat, and the vehicle is then driven without waiting
for the battery to be recharged, the engine may misfire and it
may not be possible to drive the vehicle. This is because the
ABS consumes a large amount of current when carrying out its
initial checks. If this happens, recharge the battery fully.
HYDRAULIC UNIT
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ANTI-LOCK BRAKING SYSTEM (ABS)
35B-188
HYDRAULIC UNIT
REMOVAL AND INSTALLATION
M1352008601069
NOTE: ABS-ECU is located in the hydraulic unit.
Pre-removal operation
• Strut tower bar removal (Refer to GROUP 42A − Strut
Tower Bar
.)
• Brake fluid draining
• Intake manifold plenum removal (Refer to GROUP 15 −
Intake Manifold Plenum
Post-installation operation
• Intake manifold plenum installation (Refer to GROUP 15 −
Intake Manifold Plenum
• Brake fluid refilling and air bleeding (Refer to GROUP 35A
− On-vehicle Service, Brake Fluid Level Inspection and
Bleeding
• Strut tower bar installation (Refer to GROUP 42A − Strut
Tower Bar
.)
• Hydraulic unit check (Refer to
AC703833 AB
5
1
11
5
10 ± 2 N·m
89 ± 17 in-lb
24 ± 4 N·m
18 ± 3 ft-lb
5
9
12
16 ± 3 N·m
12 ± 2 ft-lb
5
10
13 ± 2 N·m
111 ± 22 in-lb
3
8
4
5
2
6
7
Removal steps
1.
ABS-ECU harness connector
2.
Suction pipe installation bolt
3.
Wheel speed sensor harness
connector connection
4.
Wheel speed sensor harness clip
connection
>>A<<
5.
Brake tube connection
6.
Brake tube and clip connection
7.
Suction pipe, liquid pipe and clip
connection
8.
Hydraulic unit (ABS-ECU) and
hydraulic unit bracket
<<A>>
9.
Hydraulic unit (ABS-ECU)
10. Hydraulic unit bracket insulator
11. Hydraulic unit bracket B
12. Hydraulic unit bracket A
Removal steps (Continued)
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