Iveco daily euro 4, Repair Manual

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ABS 8/ESP 8
The ABS 8 system integrates the following functions:
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ABS - Antilock Braking System
It prevents wheels from being locked during braking, thus making it possible to avoid possible obstacles.
It prevents losing control of the vehicle when braking on a slippery surface (even on one side only
→
mu-split).
It also reduces the braking distance compared with the one with the wheels locked.
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EBD - Electronic Brake Force distribution
It supersedes and optimizes the function of current hydraulic brake correctors, by better controlling the braking force on
rear wheels.
It is implemented by adding a special software to the ABS, and comes into action within a given time interval prior to ABS
actuation.
It makes it possible to control any locking condition affecting the rear wheels compared with the front wheels, by optimizing
the braking force under different load, running and vehicle utilization conditions.
The ESP 8 system, in addition to the EBS 8 system, incorporates the following functions:
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ESP - Electronic Stability Program
It monitors the vehicle behaviour continuously (both along straight stretches and bends, when braking or accelerating).
It also monitors the driver’s actions: steering the wheel, pressing the brake pedal, accelerator position, and speed.
It is always active in the background, i.e. the ESP system compares the actual vehicle ride with the driver’s desired ride 50
times a second. It recognizes dangerous situations before the driver does.
The system considers the different possibilities of coming into operation. It brakes on every single wheel separately.
It operates on the engine control system.
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ASR — Acceleration drive control device
This system prevents driving wheel skid through quick action on the engine and brakes. It allows the vehicle to set off safely
and fast even on slippery roads or when one driving wheel is skidding. It also reduces the risk of understeering when you
accelerate too much when cornering.
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MSR — Engine braking torque control
This system avoids driving wheel drag due to the exhaust brake. It ensures vehicle stability when releasing on slippery roads
(e.g. snow, ice), and assists in keeping the path when cornering and shifting down, especially on slippery roads. It requires
a slight increase of revs number, through the CAN line.
- HHC — Hill holder control
This function allows the vehicle to be kept automatically locked (braked) until the clutch is closed and the driver
subsequently presses the accelerator pedal, thus preventing undesired vehicle motion.
The function is actuated automatically: the braking situation is detected by the sensor inside the modulator. When the brake
pedal is released, the vehicle will be kept for 2.5 seconds, thus allowing the driver/system to put the gear (and the vehicle
to be started). This ensures safe, easy start with any incline, regardless of the weight carried.
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HBA (Hydraulic Brake Assistant) — Hydraulic assistant in emergency braking
The main feature of the HBA function is to recognize an emergency braking situation followed by “automatic” increase
of vehicle deceleration.
Vehicle deceleration is only restricted to actuation of ABS control, thus taking the greatest advantage of the grip between
the tyre and the roadbed currently available. Therefore, ordinary drivers can now achieve braking distances which only
experienced drivers could achieve in the past.
If the driver reduces the braking intensity, vehicle deceleration is reduced depending on the reduction of the force applied
onto the pedal.
Therefore, the driver can control deceleration accurately after overcoming the emergency situation.
The extent of the braking request from the driver corresponds to the force applied onto the pedal. Such force is derived
from measuring the pressure in the brake pump.
ELECTRIC/ELECTRONIC SYSTEM
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D
AILY
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URO
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Base - March 2006 Print 603.93.651