Двигатели Scania четвёртой серии. Руководство — часть 165

98

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03:04-06

Fault code D804

Fault

Internal fault in the control unit.

Cause

The voltage on several driver stages is too low.

Remarks

As a result, the engine will probably run
unevenly. The engine torque is reduced by
30%.

Action

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

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

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99

Fault code D900

Fault

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

Cause

The voltage between pins 3 and 10 in connector
B2 is too high.

Remarks

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

Action

Check the signal from the fuel temperature
sensor.

Measure the resistance of the fuel temperature
sensor.

Check for any visible faults on the fuel
temperature sensor, the connectors and the
wiring.

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

Fault codes

100

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03:04-06

Fault code D901

Fault

The voltage has been below 0.440 V (above
130°C), i.e.the fuel temperature was above its
upper limit.

Cause

The voltage between pins 3 and 10 in connector
B2 is too high.

Remarks

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

Action

Check the signal from the fuel temperature
sensor.

Measure the resistance of the fuel temperature
sensor.

Check for any visible faults on the fuel
temperature sensor, the connectors and the
wiring.

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

Fault code D902

Fault

Internal fault in the control unit.

Cause

The control unit has not been able to process
(convert) the signal from the fuel temperature
sensor.

Remarks

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

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

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101

Fault code E000

Fault

Internal fault in the control unit.

Cause

The control unit supplies the fuel volume
solenoid valve on the front bank, cylinder 1-3,
with an incorrect activation time.

Remarks

The fuel injection (the engine) is switched off
as long as the fault is active.

As a result, the fault may also generate other
fault codes.

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 E001

Fault

Internal fault in the control unit.

Cause

The control unit supplies the fuel volume
solenoid valve on the rear bank, cylinder 4-6,
with an incorrect activation time.

Remarks

The fuel injection (the engine) is switched off
as long as the fault is active.

As a result, the fault may also generate other
fault codes.

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