Iveco Daily. Manual

Longitudinal acceleration sensor

102116

It measures the vehicle’s acceleration and deceleration changes.

These signals continuously inform the control unit about the vehicle’s behaviour.

The comparison between these signals and those from the driver (steering-wheel position, wheel spin number/speed and pressure
on the brake pedal/accelerator position) allows the ESP control unit to define the actions to be taken. The hydraulic unit controls
brake pressure as quickly as possible, separately for every single wheel.

Moreover, the ESP system may decrease the engine revs number by means of the engine control feature.

Longitudinal acceleration sensor calibration

Figure 131/10

Figure 131/11

102111

In a horizontal position, you will obtain the sensor “zero” condition through the diagnosis instrument, i.e. you will assign its absolute
zero position.

Use a diagnosis instrument to clear the errors.
Carry out a road test, to make the control unit verify whether errors are still found. The vehicle is to be taken to a slight slope
and checked if it is kept braked for 2.5 seconds.

Drive back to the service centre, then use a diagnosis instrument to verify that the anomaly is no longer found.

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Revi - February 2005

Steering angle sensor

102116

It measures the steering angle required by the driver.

The comparison between this signal and those from all the other sensors allows the ESP control unit to define the actions to be
taken. The hydraulic unit controls brake pressure as quickly as possible, separately for every single wheel.

Moreover, the ESP system may decrease the engine revs number by means of the engine control feature.

Steering angle sensor calibration

Figure 131/12

Figure 131/13

102110

With both the steering-wheel and the wheels in straight position (after checking toe-in), you will obtain the sensor “zero” condition
through the diagnosis instrument, i.e. you will assign its absolute zero position.

Use a diagnosis instrument to clear the errors.
Carry out a road test, to make the control unit verify whether errors are still found. Drive along a straight road at a speed of
approximately 50 k.p.h. Steer to the right and then to the left several times, after making sure you do not endanger other drivers.

You need not oversteer to cause the ESP warning light to come on.

NOTE

Drive back to the service centre, then use a diagnosis instrument to verify that the anomaly is no longer found.

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ESP control unit programming

Figure 131/14

102109

Entering the variant codes: type of drive, engine, MTT, wheelbase, type of front and rear suspensions, height.

Easy compares the type of vehicle (PIC reading) with the control unit code, to avoid installation errors (single wheels instead of
dual), and downloads the variant codes into the control unit.

Clear the errors (if any) by means of the diagnosis instrument.

Carry out a road test. Drive along a straight road at a speed of approximately 50 k.p.h. Brake suddenly as if in an emergency, after
making sure you do not endanger other drivers: you should feel the system “respond” on the brake pedal. This test makes the
control unit verify whether errors are still found.

Drive back to the service centre, then use a diagnosis instrument to verify that the anomaly is no longer found.

Replacing ESP central unit needs the longitudinal acceleration sensor calibration that was already described in previous page.

The steering angle sensor, in this case, is not to be calibrated as it has its own internal memory.

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6AS 300 VD AUTOMATIC TRANSMISSION

Description of operation

The gear engaging system of the 6 AS 300 VD gearbox is a combination of a traditional system of the mechanic type and an electric
one.

Below are the main components of the system:

1) electronic control unit;

2) gear selecting/engaging actuator;

3) gear shift lever;

4) clutch actuator;

5) display/buzzer.

In the manual mode, the first gear is used to start the vehicle.

In the automatic mode, you just need to act on the selection lever (A/M): the gear is selected directly by the control unit (1a).

The electronic control unit picks up all the signals required to meet the safety conditions and the parameters programmed in the
same. It also drives the electric actuating motor(s) for gear selection/engagement and clutch control.

The information required for driving is in any case made available to the driver by means of the display.

EDC

ABS8/ESP8

IMMOBILIZER

PTO (POWER TAKE-OFF, if available).

To ensure correct management of the gearbox and the other auxiliary functions provided for by the system, the
control unit is interfaced (CAN line) with the other electric and electronic system fitted to the vehicle, such as:

NOTE

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Iveco Daily. Manual - part 395