DAF LF45, LF55 Series. Manual — part 45

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1

Contents

D3LC (ACH-EA)

DAVIE XD diagnostics manual

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11 D3LC (ACH-EA)

CONTENTS

Page

Date

1.

1.2

2.

D3LC (ACH-EA)

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Contents

11

DAVIE XD diagnostics manual

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1-1

D3LC (ACH-EA) fault codes

D3LC (ACH-EA)

DAVIE XD diagnostics manual

11

1. D3LC (ACH-EA) FAULT CODES

1.1 INTRODUCTION

If the electronic unit detects a system fault, this

fault is usually stored in the memory of the

electronic unit as a fault code.

Most system faults will also generate a warning.

D3LC (ACH-EA)

1-2

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D3LC (ACH-EA) fault codes

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DAVIE XD diagnostics manual

1.2 EXPLANATORY NOTES TO FAULT CODES D3LC (ACH-EA)

Fault code

Fault code description with possible cause

Symptom

0-0

Internal fault in ECU (D871) due to:
-

defective ECU (D871)

-

insufficient battery voltage

-

Cab heater does not start or fails during
operation

0-1

Internal fault in ECU (D871) due to:
-

defective internal temperature sensor in
ECU (D871)

-

Cab heater does not start or fails during
operation

1-0

Fault when starting ACH-EA, no flame is detected
within the start time due to:
-

no or insufficient supply of fuel

-

insufficient supply of inlet air

-

clogged exhaust

-

defective flame sensor (F626)

-

defective glow filament (B168)

-

Cab heater does not start. After 2 failed
starts the cab heater switches off and
generates a fault.

2-0

Flame extinguishes repeatedly during operation
due to:
-

no or insufficient supply of fuel

-

insufficient supply of inlet air

-

clogged exhaust

-

defective flame sensor (F626)

-

Cab heater fails or emits smoke and
supplies insufficient heat

3-1

Voltage (>30 V for at least 20 seconds) on pin A5
of the ECU (D871) is too high due to:
-

excessive alternator/battery voltage

-

Cab heater fails during operation

3-2

Voltage (<20 V for at least 20 seconds) on pin A5
of the ECU (D871) is too low due to:
-

insufficient alternator/battery voltage

-

interruption on pin A5 of the ECU (D871)

-

Cab heater does not start

4-0

Flame signalling when switching on due to:
-

defective flame sensor (F626)

-

defective ECU (D871)

-

Cab heater does not start

5-1

Short circuit to earth or short circuit to supply on
pins FW1 and FW2 of the ECU (D871), flame
sensor (F626)

-

Cab heater does not start or fails during
operation

5-2

Interruption on pin FW1 and/or FW2 of the ECU
(D871), flame sensor (F626)

-

Cab heater does not start or fails during
operation

6-1

Short circuit to earth or short circuit to supply on
pins A8 and A13 of the ECU (D871), temperature
sensor (F509)

-

Cab heater does not start or fails during
operation

6-2

Interruption on pin A8 and/or A13 of the ECU
(D871), temperature sensor (F509)

-

Cab heater does not start or fails during
operation

7-1

Short circuit to earth or short circuit to supply on
pin A11 and/or A3 of the ECU (D871), fuel
metering pump (B122)

-

Cab heater does not start

Internal fault in fuel metering pump (B122)

7-2

Interruption on pin 4 and/or 9 of the ECU (D871),
fuel metering pump (B122)

-

Cab heater does not start

Internal fault in fuel metering pump (B122)