Двигатели Scania четвёртой серии. Руководство - часть 146

 

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Двигатели Scania четвёртой серии. Руководство - часть 146

 

 

22

ã

03:04-06

Fault code 1202

Fault

Open circuit in the signal from engine speed 
sensor 2.

Cause

The signal from engine speed sensor 2 has 
indicated an implausible engine speed increase 
during the time the control unit waited for the 
space in the pulse pattern to pass. If the fault 
code for no signal, fault code 1107, has been 
generated at the same time, then the signal 
must have been absent for several engine 
rotations, otherwise the fault is due to a 
temporary disturbance.

This fault code can be generated when starting 
in extreme cold or when starting with a poor 
battery

Remarks

If one of the engine speed sensors is faulty the 
maximum torque is reduced by approximately 
30% (as long as the fault is active) and the high 
idling speed is reduced.

If both engine speed sensors are faulty the 
engine will shut down.

Action

Check the engine speed sensors, connectors 
and wiring.

Fault codes

03:04-06

ã

23

Fault code 1203

Fault

Disturbance of the signal from engine speed 
sensor 2.

Cause

The signal from engine speed sensor 2 has 
indicated an implausible engine speed increase 
during the time the control unit waited for the 
space in the pulse pattern to pass. If the fault 
code for no signal, fault code 1107, has been 
generated at the same time, then the signal 
must have been absent for several engine 
rotations, otherwise the fault is due to a 
temporary disturbance.

This fault code can be generated when starting 
in extreme cold or when starting with a poor 
battery

Remarks

If one of the engine speed sensors is faulty the 
maximum torque is reduced by approximately 
30% (as long as the fault is active) and the high 
idling speed is reduced.

If both engine speed sensors are faulty the 
engine will shut down.

Action

Check the engine speed sensors, connectors 
and wiring.

Fault codes

24

ã

03:04-06

Fault code 1204

Fault

The signal from engine speed sensor 2 is faulty.

Cause

The signal from engine speed sensor 2 has 
indicated an implausible engine speed increase 
between two subsequent pulses. If the fault 
code for no signal, fault code 1107, has been 
generated at the same time, then the signal 
must have been absent for several engine 
rotations, otherwise the fault is due to a 
temporary disturbance.

This fault code can be generated when starting 
in extreme cold or when starting with a poor 
battery

Remarks

If one of the engine speed sensors is faulty the 
maximum torque is reduced by approximately 
30% (as long as the fault is active) and the high 
idling speed is reduced.

If both engine speed sensors are faulty the 
engine will shut down.

Action

Check the engine speed sensors, connectors 
and wiring.

Fault codes

03:04-06

ã

25

Fault code 1205

Fault

Open circuit in the signal from engine speed 
sensor 2.

Cause

The signal from engine speed sensor 2 has 
indicated an implausible engine speed decrease 
between two subsequent pulses. If the fault 
code for no signal, fault code 1107, has been 
generated at the same time, then the signal 
must have been absent for several engine 
rotations, otherwise the fault is due to a 
temporary disturbance.

This fault code can be generated when starting 
in extreme cold or when starting with a poor 
battery

Remarks

If one of the engine speed sensors is faulty the 
maximum torque is reduced by approximately 
30% (as long as the fault is active) and the high 
idling speed is reduced.

If both engine speed sensors are faulty the 
engine will shut down.

Action

Check the engine speed sensors, connectors 
and wiring.

Fault codes

 

 

 

 

 

 

 

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