Двигатели Scania четвёртой серии. Руководство - часть 155

58

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03:04-06

Fault code 4300

Fault

Internal fault in the control unit.

Cause

The internal hardware check of the control unit 
indicated a fault.

Remarks

The EDC control unit switches off the fuel 
supply to the unit injectors by shutting the 
solenoid valves as long as the fault is active.

As a result, it takes longer to start the engine or 
the engine cannot be started at all.

Action

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

Check if the fault code has been generated 
again.

If the fault code has been regenerated, renew 
the control unit.

Fault codes

03:04-06

ã

59

Fault code 4301

Fault

Internal fault in the control unit.

Cause

The internal hardware check of the control unit 
indicated a fault.

Remarks

The EDC control unit switches off the fuel 
supply to the unit injectors by shutting the 
solenoid valves as long as the fault is active.

This often results in short intervals of engine 
malfunction or if the fault is active over an 
extended period of time, the engine stalling.

Fault code 4303 will also be generated.

The fault code can be generated as a result of 
one of the fault codes 3200, 3500, or E000-
E006 being generated.

Action

Clear the fault code and drive the vehicle for 
approximately 10 minutes.

Check if the fault code has been generated 
again. If the fault code has been regenerated, 
renew the control unit.

Fault codes

60

ã

03:04-06

Fault code 4302

Fault

Internal fault in the control unit.

Cause

The internal hardware check of the control unit 
indicated a fault.

Remarks

The control unit will not switch off as long as 
the fault is active.

Action

Clear the fault code and drive the vehicle for 
approximately 10 minutes.

Check if the fault code has been generated 
again. If the fault code has been regenerated, 
renew the control unit.

Fault code 4303

Fault

Internal fault in the control unit.

Cause

The internal hardware check of the control unit 
indicated a fault.

Remarks

The fault often results in short intervals of 
engine malfunction. If the fault is active over 
an extended period of time, fault code 4301 
will also be generated.

The fault code can be generated as a result of 
one of the fault codes 3200, 3500, or E000-
E006 being generated.

Action

Clear the fault code and drive the vehicle for 
approximately 10 minutes.

Check if the fault code has been generated 
again. If the fault code has been regenerated, 
renew the control unit.

Fault codes

03:04-06

ã

61

Fault code 4400

Fault

Internal fault in the control unit.

Cause

A memory fault has occurred in the control 
unit.

Remarks

The vehicle cannot be started or driven as long 
as the fault is active.

Action

Clear the fault code memory and try to start the 
vehicle. If the fault code is regenerated and the 
vehicle does not start, renew the control unit.

If the vehicle starts, drive the vehicle for 
approximately 10 minutes.

Check if the fault code has been generated 
again. If the fault code has been regenerated, 
renew the control unit.

Fault code 4401

Fault

Internal fault in the control unit.

Cause

A memory fault has occurred in the control 
unit.

Remarks

The vehicle cannot be started or driven as long 
as the fault is active.

Action

Clear the fault code memory and try to start the 
vehicle. If the fault code is regenerated and the 
vehicle does not start, renew the control unit.

If the vehicle starts, drive the vehicle for 
approximately 10 minutes.

Check if the fault code has been generated 
again. If the fault code has been regenerated, 
renew the control unit.

Fault codes