Mitsubishi Montero (2004+). Manual — part 1030
ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-119
2. Operate the pedal by hand, and check that the pedal stroke
(free play) meets the standard value at the point where
resistance is felt.
Standard value: 3 mm (0.1 inch) or less
3. If the brake pedal play is not within the standard value,
check the following, and adjust or replace if necessary:
• Excessive play between the brake pedal and the clevis pin,
or between the clevis pin and the brake booster operating
rod
• Brake pedal height
• Installation position of the stoplight switch, etc.
Clearance between Brake Pedal and Floorboard
1. Turn up the carpet etc. under the brake pedal.
2. Start the engine, depress the brake pedal with
approximately 500 N (112 pounds) of force, and measure
the clearance between the brake pedal and the floorboard.
Standard value: 90 mm (3.5 inches) or more
3. If the clearance is outside the standard value, check for air
trapped in the brake line and thickness of the disc brake
pad. And then adjust and replace defective parts as
required.
4. Return the carpet etc. to its original position.
STOPLIGHT SWITCH CHECK
M1351008900213
1. Connect an ohmmeter between the stoplight switch
connector terminals.
2. There should be no continuity between the terminals when
the plunger is pushed in as shown. There should be
continuity when it is released.
ACX00659
ACX00660
TESTER
CONNECTION
PLUNGER
SPECIFIED
CONDITION
1
− 2
IN
Open circuit
OUT
Less than 2 ohms
ACX00671AB
NO CONTINUITY CONTINUITY
4 mm
(0.16 in)
ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-120
HBB OPERATING CHECK
M1351010400055
CAUTION
If the diagnostic trouble code is stored in the M-ASTC-ECU
memory, erase it after diagnosis is completed.
Function and Operation Check of Power Supply
System
1. Depress the brake pedal repeatedly more than 40 times until
the pedal depressing force feels heavy with the ignition
switch at the "LOCK" (OFF) position to release the pressure
of HBB power supply system.
2. Check that the fluid level in the reservoir is at the "MAX" line.
3. Chock the wheels and release the parking brake.
4. Turn the ignition switch to the "ON" position and measure
how long it takes for the pump motor to start, then stop.
Standard value: 20
− 80 seconds
5. After the pump motor stops, start the engine to confirm that
the brake warning light does not come on.
6. Stop the engine and turn the ignition switch to the "ON"
position again.
7. Confirm that the pump motor operates, then stops when the
brake pedal is depressed repeatedly 4 to 5 times.
8. Depress the brake pedal repeatedly 4 to 5 times again to
measure how long it takes for the pump motor to start, then
stop.
Standard value: 2
− 11 seconds
9. Check and confirm the following items 120 seconds or more
after turning ON the ignition switch.
CAUTION
Check and confirm the following items 120 seconds or
more after turning the ignition switch to the "ON" position.
10.Confirm that the buzzer sounds and the brake warning light
illuminates when the brake pedal is fully depressed 15 to 20
times within 10 seconds.
HBB Simple Check
1. Depress the brake pedal repeatedly for more than 40 times
until the pedal depressing force feels heavy with the ignition
switch at the "LOCK" (OFF) position to release the pressure
of HBB power supply system.
2. Check the change of pedal height by turning the ignition
switch to the "ON" position while depressing the brake
pedal. It is normal if the pedal is lowered at this time. If it is
not lowered, the system is defective.
Check Using Simple Tester
1. Depress the brake pedal repeatedly more than 40 times until
the pedal depressing force feels heavy with the ignition
switch at the "LOCK" (OFF) position to release the pressure
of HBB power supply system.
ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-121
2. Connect a pressure gauge and a pedal depression gauge
as shown in the illustration and bleed air from the pressure
gauge.
3. Perform the operation test without booster according to the
following method.
Depress the brake pedal repeatedly more than 40 times
with the ignition switch at "LOCK" (OFF) position to bleed
pressure from the HBB power supply system. Measure
the relation between the brake pedal depressing force
and the hydraulic pressure.
Standard value:
4. Perform the operation test with booster according to the
following method.
Turn the ignition switch to the "ON" position and measure
the relation between the brake pedal depressing force
and the hydraulic pressure after pump motor was
stopped.
Standard value:
Brake Warning Light and Buzzer Operation Check
1. Chock the wheel and start the engine.
2. Hold the engine at the idling condition for more than 120
seconds.
BRAKE PEDAL
DEPRESSING
FORCE N (lb)
HYDRAULIC PRESSURE kPa (psi)
FRONT BRAKE
REAR BRAKE
100 (22)
600 (87) and over
0 (0)
500 (112)
4,500 (653) and
over
0 (0)
BRAKE PEDAL
DEPRESSING
FORCE N (lb)
HYDRAULIC PRESSURE kPa (psi)
FRONT BRAKE
REAR BRAKE
100 (22)
3,000
− 4,000
(435
− 580)
3,300
− 4,300
(479
− 624)
200 (45)
8,000
− 10,000
(1,160
− 1,450)
8,000
− 10,000
(1,160
− 1,450)
400 (90)
14,000
− 18,000
(2,030
− 2,611)
14,000
− 18,000
(2,030
− 2,611)
500 (112)
15,000
− 19,000
(2,175
− 2,756)
15,000
− 19,000
(2,175
− 2,756)
ACX00661 AB
PEDAL DEPRESSION GAUGE
PRESSURE
GAUGE
ON-VEHICLE SERVICE
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BASIC BRAKE SYSTEM
35A-122
CAUTION
Perform the check 120 seconds or more after turning the
ignition switch to the "ON" position.
3. Release the parking brake and fully depress the brake pedal
repeatedly 15 to 20 times in 10 seconds. Confirm that the
warning light comes on and the buzzer sounds.
HBB CHECK
M1351010500063
Continuity and Resistance Test of Pump Motor
1. Disconnect the HBB connectors.
2. Measure the resistance between the terminals at the HBB.
ACX01818
BRAKE WARNING LIGHT
BUZZER
AB
TESTER
CONNECTION
SPECIFIED
CONDITION
RESISTANCE VALUE
Ω
(REFERENCE VALUE)
2
− 7
Continuity
10 or less
2
− 8
Continuity
Approximately 33
2
− 31
Continuity
Less than 2
4
− 6
Continuity
Approximately 33
4
− 32
Continuity
Approximately 33
6
− 7
Continuity
Less than 2
6
− 32
Continuity
Less than 2
7
− 32
Continuity
Less than 2
8
− 31
Continuity
Approximately 33
31
− 32
Continuity
10 or less
ACX00662
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