DAF 95XF. Manual - part 217

200438

1-5

ECS-DC3 fault codes

ECS-DC3

DAVIE XD diagnostics manual

102 - 2

Boost pressure sensor signal (F649), the signal
on pin A28 of the ECU, is high while other engine
parameters (e.g. speed and load) indicate that it
should be low, due to:
-

incorrect supply voltage on inlet air boost
pressure and temperature sensor

interruption(s) or contact resistance(s) in the
wiring between the inlet air boost pressure
and temperature sensor and the ECU

oil in intercooler and/or defective
turbocompressor oil seals

Reduced engine output.

102 - 3

Voltage on pin A28 of the ECU for boost pressure
sensor (F649) is too high due to:
-

incorrect supply voltage on inlet air boost
pressure and temperature sensor

short circuit to supply on pin A28 of the ECU

interruption on pin A21 of the ECU

short circuit between pin A10 and pin A28 of
the ECU

incorrectly installed turbocompressor

Reduced engine output.

102 - 4

Voltage on signal pin A28 of the ECU for boost
pressure sensor (F649) is too low due to:
-

incorrect supply voltage on inlet air boost
pressure and temperature sensor

interruption on pin A10 and/or A28 of the
ECU

short circuit to earth on pin A10 and/or A28
of the ECU

short circuit between pin A10 and pin A21 of
the ECU

short circuit between pin A28 and pin A21 of
the ECU

incorrectly installed turbocompressor

Possibly reduced engine output.

105 - 0

Inlet air temperature signal, the signal on pin A29
of the ECU, indicates that the inlet air
temperature is above the threshold value of the
engine protection system due to:
-

contaminated intercooler

wrong/faulty inlet air boost pressure and
temperature sensor (F649)

Limitation of maximum engine output and
maximum engine speed.

105 - 3

Voltage on pin A29 of the ECU for inlet air
temperature is too high due to:
-

wrong/faulty inlet air boost pressure and
temperature sensor (F649)

interruption in wiring on pin A21 and/or pin
A29 of the ECU

short circuit between pin A10 and pin A29 of
the ECU

The ECU continues its calculations with a default
replacement value for the inlet air temperature.

105 - 4

Low voltage or short circuit to earth on signal pin
A29 of the ECU for inlet air temperature due to:
-

wrong/faulty inlet air boost pressure and
temperature sensor (F649)

short circuit to earth on pin A29 of the ECU

short circuit between pins A21 and A29 of
the ECU

ECU switches to default replacement value.

Fault code

Fault code description with possible cause

Symptom

ECS-DC3

1-6

200438

ECS-DC3 fault codes

DAVIE XD diagnostics manual

105 - 16

Inlet air temperature value, the signal on pin A29
of the ECU, is above the threshold value of the
engine protection system due to:
-

contaminated intercooler

wrong/faulty inlet air boost pressure and
temperature sensor (F649)

Limitation of maximum engine torque and
maximum engine speed.

108 - 11

Incorrect atmospheric air pressure sensor signal
due to:
-

internal fault in ECU (D903); the
atmospheric air pressure sensor is in the
ECU

Blacker exhaust smoke. Limitation of maximum
engine torque and maximum engine speed.

110 - 0

Coolant temperature signal, the signal on pin A36
of the ECU, is above the threshold value of the
engine protection system due to:
-

fouled radiator

faulty thermostat

Possible limitation of maximum engine torque
and maximum engine speed.

110 - 3

Voltage on pin A36 of the ECU for engine coolant
temperature sensor (F566) is too high due to:
-

faulty engine coolant temperature sensor

interruption in wiring of pin A18 and/or A36
of the ECU

Longer start time before engine fires.
No temperature indication on coolant
temperature gauge on DIP.

110 - 4

Voltage on signal pin A36 of the ECU for engine
coolant temperature sensor (F566) is too low due
to:
-

faulty engine coolant temperature sensor

short circuit to earth on pin A36 of the ECU

short circuit between pin A36 and pin A18 of
the ECU

Longer start time before engine fires.
No temperature indication on coolant
temperature gauge on DIP.

110 - 16

Engine coolant temperature signal (F566), via pin
A36 of the ECU, is way above the threshold value
of the engine protection system due to:
-

faulty engine coolant temperature sensor

fouled radiator

faulty thermostat

Limitation of maximum engine output and
maximum engine speed.

157 - 3

Voltage on signal pin A27 of the ECU for fuel rail
pressure sensor (F648) is too high due to:
-

faulty rail pressure sensor

short circuit to supply on pin A27 of the ECU

interruption on pin 20 of the ECU

short circuit between pin A12 and pin A27 of
the ECU

Limitation of maximum engine output and
maximum engine speed. Loud combustion
knocking.

157 - 4

Low voltage or short circuit to earth on signal pin
A27 of the ECU for fuel rail pressure sensor
(F648) due to:
-

faulty rail pressure sensor

interruption on pin A12 and/or A27 of the
ECU

short circuit to earth on pin A12 and/or A27
of the ECU

short circuit between pin A12 and pin A20 of
the ECU

short circuit between pin A27 and pin A20 of
the ECU

Limitation of maximum engine output and
maximum engine speed. Loud combustion
knocking.

Fault code

Fault code description with possible cause

Symptom

200438

1-7

ECS-DC3 fault codes

ECS-DC3

DAVIE XD diagnostics manual

167 - 18

ECU supply voltage before ignition, pin B01, B07,
B12, B13, is too low due to:
-

alternator voltage adjusted too low (A513)

contact resistance(s) in the wiring between
the alternator (A513) and the ECU

No noticeable system limitation in ECS-DC3.

168 - 16

ECU supply voltage before ignition is too high due
to:
-

faulty alternator (A513)

No noticeable system limitation in ECS-DC3.

168 - 18

ECU supply voltage before ignition, pin B01, B07,
B12, B13, is too high or is disturbed due to:
-

bad or discharged battery

poor battery connections

many start attempts

No noticeable system limitation in ECS-DC3.

174 - 0

Fuel temperature, via signal pin A34 of the ECU,
is above the threshold value of the engine
protection system due to:
-

faulty fuel temperature sensor (F565)

warm fuel due to return fuel as a result of low
fuel level

Limitation of maximum engine speed.

174 - 3

Voltage on fuel temperature sensor (F565),
signal pin A34 of the ECU, is too high due to:
-

faulty fuel temperature sensor

interruption in wiring on pin A34 and/or pin
A17 of the ECU

No noticeable system limitation in ECS-DC3.

174 - 4

Voltage on fuel temperature sensor (F565),
signal pin A34 of the ECU, is too low due to:
-

faulty fuel temperature sensor

short circuit to earth on pin 34 of the ECU

short circuit between pin A34 and pin A17 of
the ECU

No noticeable system limitation in ECS-DC3.

174 - 15

High fuel temperature found on fuel temperature
sensor (F565), signal pin A34 of the ECU, due to:
-

faulty fuel temperature sensor

warm fuel due to return fuel as a result of low
fuel level

Reduced engine output.

175 - 3

Voltage on engine oil temperature sensor (F647),
signal pin A35 of the ECU, is too high due to:
-

wrong/faulty engine oil pressure and
temperature sensor

interruption in wiring on pin A19 and/or pin
A35 of the ECU

No noticeable system limitation in ECS-DC3.

175 - 4

Voltage on engine oil temperature sensor, signal
pin A35 of the ECU, is too low due to:
-

wrong/faulty engine oil pressure and
temperature sensor (F647)

short circuit to earth on pin A35 of the ECU

short circuit between pin A19 and pin A35 of
the ECU

No noticeable system limitation in ECS-DC3.

190 - 0

Engine speed has exceeded the maximum speed
due to:
-

possibly incorrect shifting of the gearbox

No noticeable system limitation in ECS-DC3.

Fault code

Fault code description with possible cause

Symptom

ECS-DC3

1-8

200438

ECS-DC3 fault codes

DAVIE XD diagnostics manual

190 - 2

No signal from crankshaft sensor (F552) due to:
-

faulty/soiled crankshaft sensor

too large an air gap between crankshaft
sensor and sensor wheel (= poly V-belt
pulley)

short circuit, short circuit to supply, short
circuit to earth, contact resistance(s) or
interruption in wiring on pin A25 and/or pin
A24

Irregular engine running and reduced engine
output.
Engine starts but there is a delay before it fires.
Longer start time before engine fires.

441-15

Intelligent cooling control activated because
coolant temperature is too high.

Reduced engine output.

558 - 2

Voltage applied too long to both idling-active and
idling-inactive switch of the accelerator pedal
(F671) due to:
-

interruption in wiring of pin B50 and/or pin
B72 and/or pin B73 of the ECU

faulty accelerator pedal

No noticeable system limitation in ECS-DC3.

558 - 4

No voltage on both idling-active and idling-
inactive switch of the accelerator pedal (F671) for
too long due to:
-

short circuit between pin B50 and pin B72
and/or pin B73 of the ECU

short circuit to earth in wiring to B72 and/or
pin B73 of the ECU

short circuit to supply on pin B50 of the ECU

faulty accelerator pedal

The engine can only idle.

558 - 13

Conflict between idling-active/inactive switches of
the accelerator pedal (F671) and the
potentiometer due to:
-

short circuit, short circuit to earth, short
circuit to supply or contact resistances in the
wiring to pins B55, B81, B83, B72, B50 or
B73

faulty accelerator pedal

The engine can only idle.

620 - 3

High voltage on power supply wire of engine oil
pressure and temperature sensor (F647) or
control switch for engine oil pressure (F011), pin
A09 of the ECU, due to:
-

short circuit to supply on pin A09 of the ECU

No noticeable system limitation in ECS-DC3.

620 - 4

Low voltage on power supply wire of engine oil
pressure and temperature sensor (F647) or
control switch for engine oil pressure (F011), pin
A09 of the ECU, due to:
-

faulty engine oil pressure and temperature
sensor or control switch for engine oil
pressure

short circuit to earth on pin A09 of the ECU

short circuit to earth on pin A15 or pin A33 of
the ECU

short circuit between pin A09 and pin A19 of
the ECU

No noticeable system limitation in ECS-DC3.

Fault code

Fault code description with possible cause

Symptom

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