DAF LF45, LF55 Series. Manual — part 46

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1-3

D3LC (ACH-EA) fault codes

D3LC (ACH-EA)

DAVIE XD diagnostics manual

11

8-1

Short circuit to earth or short circuit to supply on
pins BM1 and BM2 of the ECU (D871), fan (B305)

-

Cab heater does not start

Internal fault in cab heater fan (B305)

8-2

Interruption on pin BM1 and/or BM2 of the ECU,
fan (B305)

-

Cab heater does not start

Internal fault in cab heater fan (B305)

8-3

Cab heater fan (B305) speed deviation due to:
-

blocked fan (B305)

-

missing solenoid in electric motor

-

defective ECU (D871)

-

Cab heater fails during operation

9-1

Short circuit to earth or short circuit to supply on
pin A9 and/or A11 of the ECU (D871), glow
filament (B168)

-

Cab heater does not start

9-2

Interruption on pin A9 and/or A11 of the ECU
(D871), glow filament (B168)

-

Cab heater does not start

10-0

Cab heater gets overheated too often due to:
-

clogged hot air pipes

-

defective overheating sensor (F627)

-

insufficient supply of inlet air

-

Cab heater fails during operation

10-4

ACH-EA safety function switched on as a result
of:
-

too many overheatings

-

The ECU is blocked

12-1

Short circuit to earth or short circuit to supply on
pins A8, A13, A7 and/or A14 of the ECU (D871),
thermostat unit (E566)

-

Cab heater does not start

-

Cab heater does not switch on or off at the
desired temperature

Internal fault in thermostat unit (E566) or timer
unit (E581)

12-2

Interruption on pin 10 and/or 11 of the ECU,
thermostat unit (E566)

-

Cab heater does not start

-

Cab heater does not switch on or off at the
desired temperature

Internal fault in thermostat unit (E566) or timer
unit (E581)

13-1

Short circuit to earth or short circuit to supply on
pins UF1 and UF2 of the ECU, overheating
sensor (F627)

-

Cab heater does not start or fails during
operation

13-2

Interruption on pin UF1 and/or UF2 of the ECU,
overheating sensor (F627)

-

Cab heater does not start or fails during
operation

Fault code

Fault code description with possible cause

Symptom

D3LC (ACH-EA)

1-4

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D3LC (ACH-EA) fault codes

11

DAVIE XD diagnostics manual

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2-1

System inspection with DAVIE XD

D3LC (ACH-EA)

DAVIE XD diagnostics manual

11

2. SYSTEM INSPECTION WITH DAVIE XD

2.1 GENERAL

Communication between DAVIE XD and the cab

heater can only be established if the cab heater is

switched on.

D3LC (ACH-EA)

2-2

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System inspection with DAVIE XD

11

DAVIE XD diagnostics manual