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1.Disconnect the HBB
connectors.
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2.Measure the resistance
between the terminals at the HBB.
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TESTER
CONNECTION
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SPECIFIED
CONDITION
|
RESISTANCE VALUE
Ω (REFERENCE
VALUE)
|
2 - 7
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Continuity
|
10 or less
|
2 - 8
|
Continuity
|
Approx. 33
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2 - 31
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Continuity
|
Less than 2
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4 - 6
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Continuity
|
Approx. 33
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4 - 32
|
Continuity
|
Approx. 33
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6 - 7
|
Continuity
|
Less than 2
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6 - 32
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Continuity
|
Less than 2
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7 - 32
|
Continuity
|
Less than 2
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8 - 31
|
Continuity
|
Approx. 33
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31 - 32
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Continuity
|
10 or less
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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.
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2.Disconnect the HBB
connector "A".
3.Measure the resistance between
terminals No. 33 and No. 35 at the HBB connector
"A".
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TESTER
CONNECTION
|
SPECIFIED
CONDITION
|
RESISTANCE VALUE
kΩ
|
33 - 35
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Continuity
|
Approx. 1
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4.If the resistance value exceeds the
specified value, replace the HBB master cylinder and
hydraulic unit assembly.
5.With the HBB connector
"A" disconnected, turn "ON" the ignition switch to operate
the pump motor. Then measure the resistance between
terminals No. 33 and No. 35 at the HBB connector "A" while
the pump motor is operating.
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TESTER
CONNECTION
|
SPECIFIED
CONDITION
|
RESISTANCE VALUE
Ω
|
33 - 35
|
Continuity
|
Less than 2
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6.If the resistance value exceeds the
specified value, replace the HBB master cylinder and
hydraulic unit assembly.
7.Connect the HBB
connector "A".
8.Erase HBB diagnosis codes (Refer
to  ).
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1.Depress the brake pedal
repeatedly more than 40 times until the pedal depressing
force is felt heavy with the ignition switch at the "LOCK"
(OFF) position to release the pressure of HBB power supply
system.
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|
2.Disconnect the HBB
connector "B".
3.Measure the resistance between
terminals No. 1 and No. 5 at the HBB connector
"B".
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TESTER
CONNECTION
|
SPECIFIED
CONDITION
|
RESISTANCE VALUE
kΩ
|
1 - 5
|
Continuity
|
Approx. 5.7
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4.If the resistance value exceeds the
specified value, replace the HBB master cylinder and
hydraulic unit assembly.
5.Next, turn the ignition
switch to the "ON" position to operate the pump motor. Then
confirm that the pump motor is stopped.
6.Measure
the resistance between terminals No. 1 and No. 5 at the HBB
connector "B".
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TESTER
CONNECTION
|
SPECIFIED
CONDITION
|
RESISTANCE VALUE
kΩ
|
1 - 5
|
Continuity
|
Approx. 1
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7.If the resistance value exceeds the
specified value, replace the HBB master cylinder and
hydraulic unit assembly.
8.Connect the HBB
connector "B".
9.Erase HBB diagnosis codes (Refer
to ).
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