Safety computer messages
|  | General
|  | Fault types
|  | Remedial measures
|  | See also:
General The safety computer has detected an illegal condition and has reset the control unit. This simultaneously results in a reset signal "Forced shut-down by safety computer". Clear the fault memory and try to reproduce the state in which the fault occurred. Should this state reoccur, please inform the VOITH customer service. The safety computer uses specific input signals to determine if the resulting transmission condition might become critical. It will shut the transmission down before such a condition could result in a hazard. The following numbers provide information on the reported condition. Important note: If the fault occurs during the actuator test, this may indicate inadequate screening of the speed inputs. Fault types The following table often states a "transmission blocking" and also other responses. This description refers to the software's view in the transmission control unit. "Transmission blockings" can be detected by the software but they might be unnoticeable for the person driving since they occur only momentarily and the safety computer already prevents a noticeable blocking. For a caption of the remedial measures, see below.
Code | Fault type | Remedy no.
01h | Transmission blocking as TB was active together with RBK or RBG at an output frequency of > 1000 Hz for more than 0.7 s. | 1
02h | Forward driving although reverse button is depressed, because TB was active at an output frequency of > 70 Hz for more than 0.1 s. | 1, 2
03h | Forward driving although reverse button is depressed, because PB was active at an output frequency of > 70 Hz for more than 0.1 s. | 1, 2
04h | Braking with full converter because condition "WP off, RBK or RBG on" was present at an output frequency > 700 Hz for more than 0.1 s. | 1
05h | Braking with full converter because condition "WP off, PB on, RBK or RBG on" was present for more than 0.1 s. | 1
06h | Transmission blocking as EK and SK were active together for more than 0.1 s. This fault can also occur if the ground connection of the ignition engine unit to the chassis is insufficient. In this case, starting the motor will lead to simultaneous voltage peaks on all solenoid valve lines. Since the combination of EK, SK is tested with the shortest response time, the safety computer will report a fault. The reset to be triggered by the control unit and the entry into the fault memory may only take effect when applying the gear range selector. | 1
07h | Gear range selector signal faulty because forward and reverse signal were active together for more than 0.2 s. | 2
08h | Reverse driving although forward button is depressed because condition "TB off, PB off, RBK or RBG on" was present at an output frequency of >70 Hz for more than 0.7s. | 1, 2
09h | Braking without brake signal present because condition "PB on, RBK or RBG on" was present at an output frequency of > 70 Hz for more than 1.2 s. | 1
0Ah | Transmission brakes because TB and PB were active together at an output frequency of > 70 Hz for more than 1.2 s. This may be due to a hysteresis between 1/2 upshifting and 2/1 downshifting. In this case, you must exchange the dataset. | 1, 3
0Bh | Transmission blocking as EK and DK were active together for more than 1.2 s. | 1
0Ch | Transmission blocking as DK and SK were active together for more than 1.2 s. | 1
0Dh | Transmission blocking as condition "TB on, RBK or RBG on, no brake signal" was present for more than 0.2 s. | 1
0Eh | Transmission blocking as TB was active together with RBK at an output frequency of > 1000 Hz for more than 0.7 s. | 1
0Fh | Transmission blocking as TB was active together with RBG at an output frequency of > 70 Hz for more than 0.2 s. | 1
10h | Excessive braking with full converter because condition "WP off, RBG on" was present at an output frequency of > 70 Hz for more than 0.1 s. | 1
11h | Excessive braking with full converter because condition "WP off, PB on, RBK on, WR on" was present for more than 0.1 s. | 1
12h | Excessive braking with full converter because condition "WP off, PB on, RBG on, WR on" was present for more than 0.1 s. | 1
13h | Reverse driving although forward button is depressed because condition "TB off, PB off, RBK on" was present at an output frequency of > 70 Hz for more than 0.7s. | 1, 2
14h | Applying reverse gear at an output frequency of > 100Hz | 4, 5
15h | Reverse driving although forward button is depressed because condition "TB off, PB off, RBG on" was present at an output frequency of > 70 Hz for more than 0.7 s. | 1, 2
16h | Braking without brake signal because PB and RBK were active together at an output frequency of > 70 Hz for more than 1.2 s. | 1
17h | Braking without brake signal because PB and RBG were active together at an output frequency of > 70 Hz for more than 1.2 s. | 1
18h | Transmission blocking in neutral due to voltage at RBK. Allowed time: 0.2 s | 1
19h | Transmission blocking in neutral due to voltage at RBG. Allowed time: 0.2 s | 1
1Ah | Driving in neutral due to voltage at EK. Allowed time: 0.5 s | 1
1Bh | Driving in neutral due to voltage at DK. Allowed time: 0.5 s | 1
1Ch | Driving in neutral due to voltage at SK. Allowed time: 0.5 s | 1
1Dh | Unmotivated braking in 1st gear | 1
1Eh | Engaging 1st gear at too high output frequency | 3
1Fh | Engaging 2nd gear at too high output frequency | 3
20h | Engaging 3rd gear at too high output frequency | 3
21h | Transition from forward gear to reverse gear at an output frequency of > 100 Hz | 2
63h | Transition from forward gear to reverse gear at an output frequency of >100Hz | 2
Remedial measures
Remedy no. | Description
1 | Indication of problems in the cabling. The fault location is stated in the safety computer message. Test the cabling for intactness and electrical pass. Pull the plugs on both sides and test the leads for short-circuit to each other. Check the contacts for intactness and cleanliness / dryness. If the cabling is OK, exchanging the control unit might help. If possible, use the control unit of an identical vehicle of the fleet and check if the fault still exists.
2 | Indication of problems with the gear range selector. Check the gear range selector. Replace the gear range selector.
3 | Indication of dataset settings not matching the application. Analyse and write down the responses / malfunction of the vehicle as exactly as possible. Request an alternative dataset from Voith Turbo. Hold the data of the transmission control unit ready for this.
4 | Indication of problems with the inductive pickup. Test the inductive pickup. Replace the inductive pickup.
5 | Indication of problems with the software in the transmission control unit. Request the current software from Voith Turbo. Hold the data of the transmission control unit ready for this.
See also:
|  | Aftersales service
© by Voith Turbo GmbH & Co. KG send remarks to markus.zwickel@voith.com (documentation department)