| FC |
Fault classification |
Trigger time |
Fault text |
Meaning |
| 01 |
easy |
1 s |
Earth terminal, brake light relay |
The brake light is not working. Pin 11 (connector X3) has detected a short circuit to earth |
| 02 |
easy |
400 ms |
Output LS 1 battery terminal |
The assembly connected to LS1 is not working. Pin 17 (connector X1) has detected a short circuit to the positive terminal |
| 03 |
easy |
1 s |
Output HS1 earth terminal |
The assembly connected to HS1 is not working. Pin 18 (connector X1) has detected a short circuit to earth |
| 04 |
easy |
10 s |
Output HS2 earth terminal |
The assembly connected to HS2 is not working. Pin 16 (connector X1) has detected a short circuit to earth |
| 05 |
difficult |
10 s |
Terminal 15 low voltage |
A voltage of under 17.5 volts has been measured at pin 7 (connector X1) |
| 06 |
difficult |
10 s |
Terminal 15 highvoltage |
A voltage of over 33 volts has been measured at pin 7 (connector X1) |
| 07 |
difficult |
1 s |
Earth terminal, switch valve |
Pin 1 (connector X2) has detected a short circuit to earth |
| 08 |
difficult |
1 s |
Water temperature open circuit/battery terminal |
Pin 4 or pin 5 (connector X2) has detected an open circuit or a short circuit to the positive terminal |
| 09 |
difficult |
1 s |
Water temperature earth terminal |
Pin 4 or pin 5 (connector X2) has detected a short circuit to earth |
| 11 |
difficult |
1 s |
Oil temperature open circuit/battery terminal |
Pin 8 or pin 9 (connector X2) has detected an open circuit or a short circuit to the positive terminal |
| 12 |
difficult |
1 s |
Oil temperature earth terminal |
Pin 8 or pin 9 (connector X2) has detected a short circuit to earth |
| 13 |
difficult |
100 ms |
Undefined switch status at retarder step switch |
No clear signal from pins 4, 5, 6, 8 and 9 (connector X1) |
| 14 |
difficult |
10 s |
Retarder step switch battery terminal |
Pin 10 (connector X1) has detected a short circuit to the positive terminal |
| 15 |
difficult |
1 s |
Retarder step switch earth terminal |
Pin 10 (connector X1) has detected a short circuit to earth |
| 16 |
difficult |
2 s |
Tacho signal open circuit |
Pin 2 (connector X3) has detected an open circuit |
| 17 |
difficult |
1 s |
|
Only in versions after V1.0: Switch valve has open circuit or battery terminal |
| 18 |
difficult |
2 s |
Tacho signal battery terminal |
Pin 2 (connector X3) has detected a short circuit to the positive terminal |
| 19 |
difficult |
60 s |
ABS earth terminal |
Pin 3 (connector X3) has detected a short circuit to earth |
| 20 |
difficult |
-- |
Unterspannung oder Unterbrechung Klemme 30 |
|
| 21 |
difficult |
1 s |
ABS level undefined |
Pin 3 (connector X3) has measured a resistance of over 8 kΩ |
| 22 |
difficult |
1 s |
Digiprop relative to ABS path defective |
Control unit defective |
| 23 |
difficult |
1 s |
Proportional valve fault 1 |
Pin 3 (connector X3) has detected a short circuit to the positive terminal or the control unit is defective |
| 24 |
difficult |
300 ms |
Proportional valve fault 2 |
Pin 2 or 3 (connector X2) has detected a short circuit to earth, open circuit or line short circuit or the control unit is defective |
| 25 |
difficult |
10 s |
|
Proportional valve fault no. 3 |
| 26 |
difficult |
1 s |
Proportional valve fault 4 |
Control unit defective |
| 27 |
difficult |
2 s |
|
Proportional valve fault no. 5 |
| 28 |
difficult |
10 s |
Terminal 30 low voltage |
A voltage of under 17.5 volts has been measured at pin 13 (connector X1) |
| 29 |
difficult |
180 ms |
Watchdog SIBA |
Control unit defective |
| 31 |
difficult |
10 ms |
Coding defective |
Control unit set up incorrectly |
| 33 |
difficult |
1 s |
Retarder control lights battery terminal |
Pin 8 (connector X3) has detected a short circuit to the positive terminal (flashing code output only after fault repaired) |
| 34 |
easy |
2 s |
Engine rpm signal absent |
Only in versions V1.0 or later: |
| 35 |
difficult
difficult |
123 s
500 ms |
Internal ROM fault
internal EEPROM fault |
|
| 36 |
easy |
variable |
2/2-way valve fault |
|
| 37 |
easy |
100 ms or 1 s |
Foot control implausibility |
|
| 38 |
Slight |
-- |
Pressure sensor fault |
SG 53.8270.10 and 53.8270.12:
- Detectable faults
- Pressure sensor signal implausible, i.e. at prop flow = 0, the measured value is greater than 2.5 bar or, at prop flow > 0, the pressure remains at 0 (detection time is 1 s for both).
- Pressure sensor power supply (5 V) short circuit or discontinuity (detection time 30 ms).
- Deviation between the measured actual pressure and the target pressure is greater than 1 bar (detection time 10 s).
- Fault reactions
- Slight fault, i.e. the retarder is still operational, but the increased proportional valve interference increases the loss of air.
- The pressure sensor power supply is switched off.
- Fault code 38 is stored
- For SG 53.8270.12, the following also applies:
- If the service function is active after the ignition is switched on, a fault will not be generated if the deviation between the measured actual pressure and the target pressure is greater than 1 bar.
Reason: No air supply due to empty air reservoir (e.g. after the vehicle has been stationary for a long period).
|
| 41 |
Serious |
500 ms |
CAN fault: Time out TSC1_R_V |
only on SG 67.2928.11 |
| 42 |
Serious |
1,000 ms |
|
only on SG 67.2928.11 |
