Iveco Daily. Manual - part 433
258
ELECTRIC/ELECTRONIC SYSTEM
D
AILY
Base - May 2004
The electronic control unit controls different chassis positions in accordance with the requests from the driver.
As the ignition key switch is turned to ON position, the electronic central unit runs a system check while the red warning lamp
on the dashboard panel comes on for about 2 seconds.
If any failure is detected, this warning lamp can stay on fixed for serious system failure or flashing for compressor failure due to
overtemperature.
The electronic control unit checks the level sensor at regular intervals in order to keep chassis level constant as required by the
driver, and operates the necessary compensation when a deviation of more than 3 counts is detected.
The compensation shall be operated with the following delay:
~ 1 sec. with vehicle still
~ 30 sec. with vehicle moving
If the level is not restored within a maximum time of 30 seconds from the beginning of the compensation, the control unit
memorizes a plausibility error and the warning lamp comes on fixed.
During braking, the electronic control unit detects the signal from the stop light switch and stops any chassis level automatic
adjustment.
If a difference of more than 4 counts is detected between RH and LH sensors with vehicle still, after a delay of about 8 seconds,
the control unit recognizes a step" condition and stores the data in memory, keeping the chassis level as it is.
Besides a blink code" option through the red warning lamp for preliminary diagnosis, the electronic control unit is provided
with an advanced self-diagnosis system capable to detect and memorize any failures, depending on the concurrent conditions,
including intermittent errors occurred in the system during operation and ensure a more appropriate and reliable servicing.
All interventions concerning diagnosis, programming, failures memory deletion, etc. can be performed by using available diagnosis
instrument.