DAF LF45, LF55 Series. Manual — part 64

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1-7

ECS-DC3 fault codes

ECS-DC3

DAVIE XD diagnostics manual

17

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

©

ECS-DC3 fault codes

17

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

©

1-9

ECS-DC3 fault codes

ECS-DC3

DAVIE XD diagnostics manual

17

625 - 9

No communication with immobiliser when
switching on the ignition, or immobiliser code
does not correspond with ECS-DC3 code due to:
-

defective immobiliser

-

ignition key not adjusted to the immobiliser

-

immobiliser not matched to ECS-DC3 ECU

Communication problem via V-CAN on pin B52
and/or pin B53 of the ECU due to:
-

interruption on pin B52 and/or pin B53 of the
ECU

-

short circuit to supply on pin B52 of the ECU

-

short circuit to supply on pin B53 of the ECU

Motor starts but does not fire or it does fire but
stalls at once.

627 - 2

All information gathered by the ECU (e.g. fault
codes, trip information etc.) after last ignition on,
is lost at ignition off due to:
-

faulty fuse E160 and/or E118

-

bad or discharged battery

-

poor battery connections

-

failure of the constant voltage before the
voltage on connection point B39 of the ECU
is lost

No noticeable system limitation in ECS-DC3.

628 - 31

Internal ECU software fault due to:
-

internal ECU (D903) software fault

Irregular engine running and reduced engine
output.
Engine starts but will not fire.

629 - 12

ECU is not switched off after ignition off due to:
-

internal ECU (D903) software fault

When the vehicle is stationary for a long period,
the high current consumption of the ECU will
empty the vehicle batteries.

Internal ECU hardware fault due to:
-

internal ECU (D903) hardware fault

Irregular engine running and reduced engine
output.
Engine starts but will not fire.

ECU supply voltage fault due to:
-

moisture in ECU connectors (poor contacts)

-

poor power supply and/or earth connections
to the ECU (D903)

Irregular engine running and reduced engine
output.
Engine starts but will not fire.

630 - 12

Internal ECU hardware fault due to:
-

internal ECU (D903) hardware fault

Irregular engine running and reduced engine
power
Engine starts but will not fire.

639 - 2

CAN communication interrupted before complete
message has been sent due to:
-

faulty CAN wiring

-

fault in other ECU connected to the V-CAN

System reaction depending on the missing V
CAN data.

639 - 9

CAN communication is not fast enough due to:
-

faulty CAN wiring

-

fault in other ECU connected to the V-CAN

System reaction depending on the missing V
CAN data.

651 - 5

Measured current strength from cylinder 1
injector (B131) is too low. This is the current
between pins C09 and C13 of the ECU,
caused by:
-

interruption in injector wiring

-

bad connection point at injector

Irregular engine running and reduced engine
output.

Fault code

Fault code description with possible cause

Symptom

ECS-DC3

1-10

©

ECS-DC3 fault codes

17

DAVIE XD diagnostics manual

651 - 7

Incorrect mechanical response from cylinder 1
injector (B131) due to:
-

faulty injector

-

internal fuel leakage

-

leakage in fuel supply system (high
pressure) to injector

Longer start time before engine fires.
Irregular engine running and reduced engine
output.

651 - 11

Short circuit in injector(s) of cylinder row #1,
cylinders 1, 3 and 5 in case of a CE engine,
cylinders 1 and 3 in case of a BE engine,
due to:
-

short circuit to earth or short circuit in the
injector wiring

-

engine having been switched off at an
engine speed over 1300 rpm

Longer start time before engine fires.
Irregular engine running and reduced engine
output.
Cylinder row is deactivated as long as the ignition
is still on. When the cause has been removed, the
cylinder row is only activated again when the
ignition has been switched off for about 10
seconds.

651 - 13

Injection time is too long due to:
-

fuel pressure too low

Irregular engine running and reduced engine
output.
Engine starts but will not fire.

652 - 5

Measured current strength from cylinder 2
injector (B132) is too low. This is the current
between:
BE: pins C10 and C15 of the ECU,
CE: pins C03 and C06 of the ECU,
caused by:
-

interruption in injector wiring

-

bad connection point at injector

Irregular engine running and reduced engine
output.

652-7

Incorrect mechanical response from cylinder 2
injector (B132) due to:
-

faulty injector

-

internal fuel leakage

-

leakage in fuel supply system (high
pressure) to injector

Longer start time before engine fires.
Irregular engine running and reduced engine
output.

653 - 5

Measured current strength from cylinder 3
injector (B133) is too low. This is the current
between:
BE: pins C11 and C16 of the ECU,
CE: pins C04 and C12 of the ECU,
caused by:
-

interruption in injector wiring

-

bad connection point at injector

Irregular engine running and reduced engine
output.

653-7

Incorrect mechanical response from cylinder 3
injector (B133) due to:
-

faulty injector

-

internal fuel leakage

-

leakage in fuel supply system (high
pressure) to injector

Longer start time before engine fires.
Irregular engine running and reduced engine
output.

654 - 5

Measured current strength from cylinder 4
injector (B134) is too low. This is the current
between:
BE: pins C04 and C12 of the ECU,
CE: pins C05 and C14 of the ECU,
caused by:
-

interruption in injector wiring

-

bad connection point at injector

Irregular engine running and reduced engine
output.

Fault code

Fault code description with possible cause

Symptom