DAF LF45IV, LF55IV, CF65IV, CF75 IV, CF85 IV, XF95, XF105 - Comments on fault codes in HYDRONIC 10

Code

malfunction

Fault code description and possible causes

Symptoms

0-0

Internal communication failures in the electronic control unit (D901) due to the electronic control unit

-Cabin heater does not run or runs erratically

0-1

Internal communication failures in the electronic control unit (D901) due to the electronic control unit

-Cabin heater does not run or runs erratically

1-0

Launch failure ACH-EW, the flame is not detected during startup. Flame sensor value remains below 80° c voltage at pins 10 and 12 18-pin connector at the bottom of the electronic

control unit below the 2.23 in:

-The absence or insufficient fuel supply

-Insufficient air supply

-A clogged exhaust

-Pollution or damage the igniter

-Too high or too low voltage spark

-Cabin heater does not start. After two failed launches of the cabin heater shuts down and throws a fault code.

1-4

Too many runs without flame detection:

-The absence or insufficient fuel supply

-Insufficient air supply

-A clogged exhaust

-Pollution or damage the igniter

-Too high or too low voltage spark

-Cabin heater shuts down after 10 unsuccessful launches (20 launch attempts) and the electronic control unit is blocked

2-0

Flame goes out often during work:

-The absence or insufficient fuel supply

-Insufficient air supply

-Low or high voltage

-Excessively high temperature flame sensor

-Excessively high temperature sensor overheating

-Faulty combustion device

-Pollution or damage the igniter

-Clogging or contamination of exhaust

-Cabin heater does not work or works, highlighting the lack of heat

3-1

Too high voltage (above 30 in over 20 seconds) on the findings of the A5 and Jsb electronic control unit (D901) due to excessive voltage generator/accumulator

battery

-CAB heater malfunction

3-2

Too low voltage (below 20 in over 20 seconds) on the findings of the A5 and Jsb electronic control unit (D901) due to insufficient supply, such as during engine start

-CAB heater malfunction

4-0

Alarm flame when turned on. Flame sensor value above 80° c, despite the four-minute ventilation cold air; voltage at pins 10 and 12 18-pin connector at the bottom of the electronic control unit above 2.23 in flame sensor malfunction as a result.

-Cabin heater won't start

5-1

Flame sensor short circuit at pins 10 and 12 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

5-2

Flame sensor open circuit on the findings of the 10 and 12 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

6-1

A short circuit in the engine coolant temperature sensor

on the findings of the 9 and 11 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

6-2

Open circuit coolant temperature sensor on the findings

9 and 11 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

7-1

Shorted fuel pump module with level sensor (122) on the findings of the A1 and A2 electronic control unit

-Cabin heater does not run or runs erratically

7-2

Open circuit fuel pump module with level sensor (122) on the findings of the A1 and A2 electronic control unit

-Cabin heater does not run or runs erratically

8-3

Deviation speed combustion devices:

-Faulty combustion devices

-Faulty electronic unit (D901)

-Cabin heater during the work refuses delay in 60 seconds

9-1

Shorted filament on the findings of the 3 and 4 18-pin connector at the bottom of the electronic control unit

-Cabin heater won't start

9-2

Open circuit of filament on the findings of the 3 and 4 18-pin connector at the bottom of the electronic control unit

-Cabin heater won't start

10-0

Too rapid growth of coolant temperature:

-Poor fluid flow

-Lack of coolant

-Use intardera

-Cabin heater refuse during operation

10-4

Included safety function ACH-EW as a result of too many overheats

-Cabin heater not working. The electronic control unit is locked after three failed launches

11-1

Short circuit the coolant circulation pump on the findings of 6 and 7 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

11-2

Open circuit the coolant circulation pump on the findings

6 and 7 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

13-1

Short circuit sensor overheating on the findings of 5 and 8 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

13-2

Open circuit sensor overheating on the findings of 5 and 8 18-pin connector at the bottom of the electronic control unit

-Cabin heater does not run or runs erratically

13-3

Too much difference between the values in the sensor overheating and coolant temperature sensor:

-Poor fluid flow

-Lack of coolant

-Use intardera

-Cabin heater does not run or runs erratically

15-1

Short circuit in wiring "signal at the output" ACHEW A9 ALS-electronic control unit S (D911)

-No detection alarm systems (ALS-S)