Brake Pedal Test - Ford F-MAX User Manual

Brake pedal test:

There are some faults that cannot
be directly detected by EBS and
that can be detected by monitoring
the behaviour of the vehicle and the
brake system only. These monitoring
functions are called plausibility checks.
If a plausibility error is detected by EBS,
the system may be restored when the EBS
performs a system test (called reverse
test) according to legal requirements and
the test result is positive (operation of the
brake system is correct) only. This means
that a reverse test is required when the
cause of the fault corrected (in case of
a temporary fault or when the vehicle is
repaired).
In order for the EBS to perform the reverse
test, the driver shall press the brake pedal
once under a certain condition. When
the EBS requires that the pedal shall be
pressed in this way to resolve the fault,
it shall send a request with the following
fault code:
Path: 253 (Vehicle braking system)
Type: 201 (Request for pressing the brake
pedal) (SPN 64969)
You shall press the pedal as follows:
Aft er the detection of the fault, the ignition
shall be switched off and on again to reset
the EBS.
• To turn off the EBS, the ignition shall be
off at least for 5 seconds and
• When the ignition is off , the brake
pedal shall be released to avoid braking
without resetting the EBS in waking
mode.
• Aft er the ignition is switched on, for at
least 7 seconds:
• The vehicle shall remain stationary and
the brake pedal shall be released.
• The EBS supply voltage shall be
suffi cient for electronically controlled
braking.
• In case of TCM malfunctions, the
parking brake shall be released.
• The warning light is on, system
restriction is active.
• Pressing the brake pedal under following
conditions:
• When the vehicle is stationary, a brake
pedal request warning message appears
on the display.
• Do not start to press the pedal within 7
seconds aft er the ignition is turned on.
• The pedal stroke shall be increased
to the full brake position without any
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OPERATION
Braking
conditions.
• The full braking position shall be
maintained for at least 3 seconds.
• The pedal shall be released to the full
release position without any conditions.
• The brake pedal shall remain in the fully
released position for at least 3 seconds.
• The warning light illuminates. System
restriction during braking is not active.
Braking is controlled by the electronic
pressure control.
Brake pedal test successful:
• No fault is detected during braking.
• Warning lamp is off , system restriction is
not active.
Brake pedal test failed:
• When a fault is detected during braking
or
• When the maximum braking period of
25 seconds has expired or
• If the car starts to move.
• The warning light remains on, system
restriction is active.
• To restart the brake pedal test, the
ignition shall be switched off and on
again.
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