DAF LF45, LF55 Series. Instruction - page 31

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1-9

EMAS fault codes

EMAS

DAVIE XD diagnostics manual

5

612-12

Internal failure in valve block of the fluid flow
control (B372)

-

Trailing axle in centre position and does not
steer anymore

Interruption or short circuit to earth in pressure
relief valve (SP201) on pin B13 of the ECU

Interruption or short circuit to earth in pressure
relief valve (SP201) on pin B14 of the ECU

612-31

Pressure relief valve (SP201)

613-03

Supply voltage on pin A1 of the ECU too low

613-04

Supply voltage on pins B1, B2 and/or A1 of the
ECU too high

-

Trailing axle in centre position and does not
steer anymore

613-16

Supply voltage on pins B1, B2 and/or A1 of the
ECU too low

-

Trailing axle in centre position and does not
steer anymore

Interruption on pin A1 of the ECU

613-18

Supply voltage on pins B1, B2 and/or A1 of the
ECU too low

-

Trailing axle in centre position and does not
steer anymore

614-02

Internal failure in EMAS electronic unit (D932)

-

Trailing axle in centre position and does not
steer anymore

614-16

Internal failure in EMAS electronic unit (D932)

-

Trailing axle in centre position and does not
steer anymore

614-18

Internal failure in EMAS electronic unit (D932)

-

Trailing axle in centre position and does not
steer anymore

Short circuit to supply in front axle angle sensor
(F687) on pin C14 of the ECU

Short circuit to earth or to supply in angle sensors
(F687 and F688) on pin C3 of the ECU

Short circuit to supply in trailing axle angle sensor
(F688) on pin C12 of the ECU

Short circuit to earth or to supply in pressure
sensors (PSX and PSY) on pin D4 of the ECU

Short circuit to supply in centring circuit pressure
sensor (PSY) on pin C9 of the ECU

Short circuit to supply in steering circuit pressure
sensor (PSX) on pin C10 of the ECU

615-16

Internal failure in EMAS electronic unit (D932)

-

Trailing axle in centre position and does not
steer anymore

615-18

Internal failure in EMAS electronic unit (D932)

-

Trailing axle in centre position and does not
steer anymore

616-03

Supply voltage on pins B1 and B2 of the ECU too
low

616-04

Supply voltage on pins B1, B2 and/or A1 of the
ECU too high

-

Trailing axle in centre position and does not
steer anymore

616-16

Supply voltage on pins B1, B2 and/or A1 of the
ECU too low

-

Trailing axle in centre position and does not
steer anymore

Short circuit to earth or interruption on pin B1 and/
or B2 of the ECU

Fault code

Fault code description with possible cause

Symptom

EMAS

1-10

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EMAS fault codes

5

DAVIE XD diagnostics manual

616-18

Short circuit to earth or interruption on pin B1 and/
or B2 of the ECU

-

Trailing axle in centre position and does not
steer anymore

Supply voltage on pins B1, B2 and/or A1 of the
ECU too low

617-31

Internal failure in UPEC electronic unit (D814)

-

Trailing axle in centre position and does not
steer anymore

Interruption, short circuit to earth or to supply on
pin D17 of the ECU

618-31

EMAS system not calibrated

620-10

Internal failure in MTCO electronic unit (B525)

-

Trailing axle in centre position and does not
steer anymore

Interruption, short circuit to earth or to supply of
speed signal on pin D12 of the ECU

621-02

Accumulator relief valve (SP041) circuit
resistance does not meet the specifications

621-03

Internal failure in accumulator relief valve
(SP041)

-

Trailing axle in centre position and does not
steer anymore

621-04

Short circuit to supply in accumulator relief valve
(SP041) on pin B4 of the ECU

-

Trailing axle in centre position and does not
steer anymore

621-12

Internal failure in accumulator relief valve
(SP041)

-

Trailing axle in centre position and does not
steer anymore

Interruption, short circuit to earth or to supply in
accumulator relief valve (SP041) on pin B4 of the
ECU

Interruption or short circuit to earth in accumulator
relief valve (SP041) on pin B5 of the ECU

622-31

Interruption in supply voltage (after ignition) on
pin A1 of the ECU

-

Trailing axle in centre position and does not
steer anymore

-

No communication with DAVIE possible

623-31

Possibly air inside EMAS system

-

Trailing axle in centre position and does not
steer anymore

624-31

EMAS system not calibrated

-

Trailing axle in centre position and does not
steer anymore

625-31

Internal failure in EMAS electronic unit (D932)

-

Trailing axle in centre position and does not
steer anymore

626-31

EMAS system not fully calibrated due to:
-

incorrect calibration of front axle angle
sensor (F687)

-

Trailing axle in centre position and does not
steer anymore

627-31

EMAS system not fully calibrated due to:
-

incorrect calibration of trailing axle angle
sensor (F688)

-

Trailing axle in centre position and does not
steer anymore

628-31

EMAS system not fully calibrated due to:
-

incorrect calibration of pressure sensors
(PSX and PSY)

-

Trailing axle in centre position and does not
steer anymore

629-31

Internal UPEC failure (D814)

-

Trailing axle in centre position and does not
steer anymore

Interruption, short circuit to earth or to supply of
engine speed signal on pin D17 of the ECU

Fault code

Fault code description with possible cause

Symptom

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1-11

EMAS fault codes

EMAS

DAVIE XD diagnostics manual

5

630-31

Short circuit to supply in front axle angle sensor
(F687) on pin C14 of the ECU

-

Trailing axle in centre position and does not
steer anymore

Short circuit to earth or to supply in angle sensors
(F687 and F688) on pin C3 of the ECU

Short circuit to supply in trailing axle angle sensor
(F688) on pin C12 of the ECU

Short circuit to earth or to supply in pressure
sensors (PSX and PSY) on pin D4 of the ECU

Short circuit to earth or to supply in centring circuit
pressure sensor (PSY) on pin C9 of the ECU

Short circuit to supply in steering circuit pressure
sensor (PSX) on pin C10 of the ECU

631-31

Cannot reach nominal pressure in steering circuit
while steering circuit needs to be filled, due to:
-

the fluid flow not being controlled due to
mechanical blocking of the pressure relief
valve (SP201)

-

non-switching release valve (SP051)

-

Trailing axle in centre position and does not
steer anymore

632-31

Difference between desired and actual trailing
axle angle too large due to:
-

control valve (SP011)

-

Trailing axle in centre position and does not
steer anymore

633-31

Difference between desired and actual trailing
axle angle too large due to:
-

loose angle sensor lever

-

defective angle sensor

-

Trailing axle in centre position and does not
steer anymore

634-31

Internal failure in EBS electronic unit (D880)

-

Trailing axle in centre position and does not
steer anymore

-

EBS or ABS warning

Internal failure in VIC electronic unit (D900)

-

Trailing axle in centre position and does not
steer anymore

Short circuit to supply of vehicle speed-
dependent signal on pin A3 of the ECU

-

Trailing axle co-steers

635-31

Internal MTCO failure (B525)

-

Trailing axle in centre position and does not
steer anymore

Fault code

Fault code description with possible cause

Symptom

EMAS

1-12

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EMAS fault codes

5

DAVIE XD diagnostics manual

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