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Iveco Daily. Manual - part 422

214

ELECTRIC/ELECTRONIC SYSTEM

AILY

Base - May 2004

Through suitable control logic the control unit is able to

memorise and display a series of faults (present and/or

intermittent) that may occur to the system.
In the event of these faults the control unit still continues

controlling the system replacing the abnormal values detected

with suitable recovery" values which ensure minimal

operation of the system.
As a fault arises, the control unit shows the wording Error

Cli" on the display on the instrument cluster.
- For preliminary information it is possible to show any

faults on the display on the instrument cluster following

a precise procedure.

- For complete more thorough diagnostics it is however

necessary to use the diagnostic tools available to the

service network such as MODUS.

Diagnostics through blink code

To find out which is the component concerned, proceed as

follows:

Move the temperature setting knob to the HI" position (Ref.

A Figure 249).

Move the fan control knob to the 0" position (Ref. B

Figure 249).

Move the air distribution knob to the MAX DEF" position

(Ref. C Figure 249)

Engage the ignition switch (Figure 250) at the services

position (+15).

Within 10 seconds, operate the fan control knob (Figure 250)

with the following sequence:

0" ⇒ AUTO" ⇒ 0" ⇒ AUTO" ⇒ 0".
At this point the display on the instrument cluster

(Figure 251) displays the error code. If more than one error

is present, they are displayed every 3 seconds.

CLIMATE CONTROLS ASSEMBLY

A. Required temperature setting knob

B. Speed control knob

C. Air distribution knob

IGNITION SWITCH AND FAN SPEED CONTROL

KNOB SETTING

DISPLAY ON INSTRUMENT CLUSTER

Cli

⇒ 54

Error

30 / 15

Figure 249

Figure 250

Figure 251

000278t

000276t

000279t

ELECTRIC/ELECTRONIC SYSTEM

215

AILY

Blink codes

The table below shows the different error codes that may appear on the display on the instrument cluster instead of CLI" during

diagnostics.

Codice

Description

Short circuit or open circuit of blown air temperature sensor

Short circuit towards earth of outside temperature sensor

Short circuit or open circuit of outside air temperature sensor

Short circuit towards earth of inside temperature sensor

Short circuit or open circuit of inside air temperature sensor

Short circuit towards earth of evaporator temperature sensor

Short circuit or open circuit of evaporator temperature sensor

Air mixing gear motor failure

Short circuit towards earth of required temperature potentiometer

Short circuit or open circuit of required temperature potentiometer

Short circuit towards earth of ventilation control potentiometer

Short circuit or open circuit of ventilation control potentiometer

Short circuit towards earth of air mixing potentiometer signal

Short circuit or open circuit of air mixing potentiometer signal

Fan electronic control module failure

Short circuit towards earth of pin 9 of connector A of control unit for supplying potentiometers

Short circuit towards positive of pin 9 of connector A of control unit for supplying potentiometers

Supply voltage over maximum limit

Supply voltage below minimum limit

Cli

⇒

Error

Figure 252

000279t

216

ELECTRIC/ELECTRONIC SYSTEM

AILY

Base - May 2004

The air bag is a passive safety device comprising one or two cushions which, in the event of a head-on crash, inflate automatically

setting themselves between the body of the occupants and the front structures of the cab.
The system is always integrated by seat belts with pretensioner, which are controlled by the air bag control unit, in the event

of head-on crashes.
The system does not cut in for front crashes at low speed, side crash, overturning or crashes from behind.

Inflation of the bags without the restraint of the belts compromises the safety of the driver and passengers.
The system components are connected to one another and with the rest of the electric system through a special harness, that

can be easily recognised as it has a yellow sheath which is connected to the cab/bonnet cable by a 6-cell connector.

AIR BAG SYSTEM COMPONENTS

A. Driver's air bag module - B. Passenger's air bag module - C. 38-pin diagnostic connector - D. Electronic control unit -

E. Air bag failure warning light on instrument cluster - F. Driver's reel with pretentioner - G. Centre reel with pretensioner

- H. Passenger's side reel with pretensioner.

The air bag is complementary to the use of the seat belts and not in replacement of them.

NOTE

Figure 253

8621

8546

000287t

ELECTRIC/ELECTRONIC SYSTEM

217

AILY

Operation

The air bag system consists of a cushion which inflates

instantly contained in a special recess in the centre of the

steering wheel for the driver and in the dashboard for the two

passengers.
In the event of a head-on crash a deceleration sensor inside

the air bag control unit activates the pretensioners and the

instantaneous inflating device of the cushion or cushions

which act as protective barrier between the body of the

occupants and the vehicle structure. Immediately afterwards

the driver's air bag and, if requested, the passenger's air bag

deflate.
Deployment of the air bag system produces heat and a small

amount of powder. This powder is not harmful and does not

cause fire. In addition the surface of the

deployed bags and the inside of the vehicle may be covered

with dust: this may irritate the skin and eyes. In the case of

exposure, wash with neutral soap and water.

Each time the system is activated, the control unit keeps the

failure warning light on the instrument cluster on and it will

be necessary to change the whole system (control unit, belts

and pretensioners, bags and harness).
The system does not require any maintenance or checks.

LOCATION OF AIR BAG SYSTEM COMPONENTS AND CABLE

A. 38-pin connector for diagnostics - B. Air bag failure warning light - C. Cock spring - D. Driver's air bag module -

E. Connection between cab/bonnet cable and air bag cable - F. Passenger's air bag module - G. Passenger's reel with

pretensioner - H. Centre reel with pretensioner - I. Air bag earth - J. electronic control unit - K. driver's reel with

pretensioner - L. relay/fuse holder support

Turning the ignition switch to MAR, the air bag failure

warning light turns on for four seconds as system

self-diagnostics takes place.

NOTE

Figure 254

8556

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