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NOTICE: These symptoms are not abnormalities.
• When vehicle speed has reached 4MPH (6km/h) after engine
startup, an electric motor sound may be heard from the cab’s
underside. This is the automatic self check of the ABS. If you
happen to step on the pedal during self check, you may feel a
pedal vibration as well.
• When ABS is functioning, you may feel a vibration of the brake
pedal or steering wheel and hear the operation of the ABS pump.
These operating characteristics indicate normal ABS operation.
• If braking during turning or when hitting a bump, ABS may be
actuated. The reason is that the inside wheels or the wheels
hitting a bump may intermittently lock.
• ABS is not actuated until vehicle speed increases to 6MPH
(10km/h), and it stops working when vehicle speed has dropped
to 3MPH (5km/h).
Explanation of Electronic Braking force Distribution (EBD)
The ABS has an EBD function.
The EBD uses the ABS system, and is a function that prevents early
stage rear wheel lock-up by adequately controlling the braking force
distribution of the front and rear wheels in accordance with load shift,
w h i c h i s c a u s e d b y c h a n g e s t o t h e l o a d ’ s c i r c u m s t a n c e a n d
deceleration.
NOTICE: When the EBD is operated, it is not abnormal to feel a
clicking movement through the brake pedal or a noise resembling
ABS operation.
CAUTION:
• If the EBD system malfunctions, the ABS malfunction warning
light and “BRAKE” system warning light will come on
simultaneously.
• If the EBD system malfunctions, the rear wheels can easily lock-
up. Contact your Isuzu dealer immediately and have the system
repaired.
NOTICE: When you drive on sandy soil or in the mud, it may
adversely affect the brakes or the ABS sensor. If so, get the
vehicle washed and remove the mud or extraneous matter from it.
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