Двигатели Scania четвёртой серии. Руководство — часть 153

50

ã

03:04-06

Fault code 3300

Fault

There is no CAN message from the
coordinator.

Cause

CAN messages from the coordinator
(accelerator pedal, brake, cruise control etc.)
cannot be read on pin 9 and 10 on connector
B1.

Remarks

The fault results in 0% throttle actuation and
limp home speed of 750 rpm.

Action

If the fault code has only been generated once,
this may be due to the voltage to the
coordinator having been interrupted while the
EDC control unit has been supplied with
voltage.

If the fault code is generated frequently, this is
probably due to a wiring/connection fault.

If fault code 4000 is generated at the same
time, renew the EDC control unit.

General fault diagnosis:

Clear the fault codes and test start the engine.
Switch the ignition off and on again.

If the fault code is regenerated, check the
wiring and clean the connectors.

If this does not help, check that the control
units receive ignition voltage OFF/ON (U15) at
the same time.

If everything else is OK, first renew the
coordinator, and if this does not help renew the
EDC control unit.

Do not forget to check/clear any fault codes in
the coordinator!

Fault codes

03:04-06

ã

51

Fault code 3301

Fault

There is no CAN message from the
coordinator.

Cause

CAN messages from the coordinator (engine
speed control, torque limiter etc.) cannot be
read on pin 9 and 10 on connector B1.

Remarks

The fault results in 0% throttle actuation and
limp home speed of 750 rpm.

Action

If the fault code has only been generated once,
this may be due to the voltage to the
coordinator having been interrupted while the
EDC control unit has been supplied with
voltage.

If the fault code is generated frequently, this is
probably due to a wiring/connection fault.

If fault code 4000 is generated at the same
time, renew the EDC control unit.

General fault diagnosis:

Clear the fault codes and test start the engine.
Switch the ignition off and on.

If the fault code is regenerated, check the
wiring and clean the connectors.

If this does not help, check that the control
units receive ignition voltage OFF/ON (U15) at
the same time.

If everything else is OK, first renew the
coordinator, and if this does not help renew the
EDC control unit.

Do not forget to check/clear any fault codes in
the coordinator!

Fault codes

52

ã

03:04-06

Fault code 3403

Fault

Incorrect CAN version.

Cause

The coordinator and the control unit do not
agree which CAN version is being used.

Remarks

The fault results in 0% throttle actuation and
limp home speed of 750 rpm.

The fault can only arise after the control unit
has been renewed.

Action

Check the coordinator and the EDC control
unit part number/identification.

Renew the control unit with incorrect part
number.

Fault codes

03:04-06

ã

53

Fault code 4000

Fault

Internal fault in the control unit.

Cause

Fault in the CAN communication circuit.

Remarks

The fault results in 0% throttle actuation and
limp home speed of 750 rpm as long as the
fault is active.

The fault affects the communication of the
EDC control unit with the other control units.

Information about accelerator pedal position
and other controls in the cab will not reach the
EDC control unit.

Engine speed, coolant temperature and oil
pressure are no longer displayed.

Messages from other systems (e.g. TC (traction
control) and Opticruise) do not reach the EDC
control unit.

If the CAN circuit starts to function properly
again, the control unit will first have to carry
out a shutdown test before it can regard the
fault as inactive.

Action

Clear the fault code memory and switch off/on
the power with the starter key.

Renew the control unit if the fault code is
regenerated.

Fault codes