Двигатели Scania четвёртой серии. Руководство — часть 148

30

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03:04-06

Fault code 2100

Fault

The voltage has been above 4.90 V (below -
40°C), i.e. the charge air temperature was
below its lower limit.

Cause

The voltage between pin 3 and 4 in connector
A10 is too high.

Remarks

If the voltage is outside the permitted range, the
control unit uses a pre-programmed
temperature value (40°C).

As long as the fault is present, the engine
responds more slowly than normal to throttle
actuation in cold conditions. This is because
the smoke limiter is not operating correctly.

Action

Check the signal from the charge air
temperature sensor.

Check that the coolant and charge air are about
the same temperature when the engine is cold.

Measure the resistance of the charge air
temperature sensor.

Check any visible faults on the charge air
temperature sensor, connectors and wiring.

Then, erase the fault code memory and check
whether the fault code is generated again.

Fault codes

03:04-06

ã

31

Fault code 2101

Fault

The voltage has been below 0.44 V (above
130°C), i.e. the charge air temperature was
above its upper limit.

Cause

The voltage between pin 3 and 4 in connector
A10 is too low.

Remarks

If the voltage is outside the permitted range, the
control unit uses a pre-programmed
temperature value (40°C).

As long as the fault is present, the engine
responds more slowly than normal to throttle
actuation in cold conditions. This is because
the smoke limiter is not operating correctly.

Action

Check the signal from the charge air
temperature sensor.

Check that the coolant and charge air are about
the same temperature when the engine is cold.

Measure the resistance of the charge air
temperature sensor.

Check any visible faults on the charge air
temperature sensor, connectors and wiring.

Then, erase the fault code memory and check
whether the fault code is generated again.

Fault codes

32

ã

03:04-06

Fault code 2102

Fault

Internal fault in the control unit.

Cause

The control unit could not process (convert) the
signal from the charged air temperature sensor.

Remarks

If the fault arises, the control unit uses a pre-
programmed temperature value (40°C).

As long as the fault is present, the engine
responds more slowly than normal to throttle
actuation in cold conditions. This is because
the smoke limiter is not operating correctly.

Action

Clear the fault code memory. Start the engine
and accelerate the engine to full speed.

If the fault code is regenerated, renew the
control unit.

Fault codes

03:04-06

ã

33

Fault code 2200

Fault

The voltage has been above 4.66 V (greater
than 4.0 bar absolute pressure), i.e. above the
upper limit for charge air pressure.

Cause

The voltage between pin 2 and 3 connector
A10 is too high.

Remarks

If the voltage is outside the permitted range, the
control unit uses a pre-programmed pressure
value (approximately 1.7 bar absolute
pressure).

The charge pressure sensor detects the absolute
pressure in the intake manifold (the barometric
pressure plus the positive pressure provided by
the turbo).

Engine torque is limited by approximately 30%
as long as the fault is active.

In addition, the engine responds more slowly
than normal to throttle actuation. This is
because the smoke limiter is not operating
correctly.

Action

Check the signal from the charge air pressure
sensor.

Check any visible faults on the charge air
pressure sensor, connectors and wiring.

Then, erase the fault code memory and check
whether the fault code is generated again.

Fault codes