Electrical systems – 5000 Diagnostic and troubleshooting T-code 781
Valid from serial number 904519-
Date 2005-11-04
Order number 229735-040
The most recently occurred error will be displayed. The display will alternate between the fault code and the hour meter reading when the fault occurred. If the fault code log contains more than one fault code, these can be displayed by repeatedly operating the speed control L1.
11.10.3 List of error codes NOTE! The text “Restart the truck!” in the following tables always means switching the truck off completely by removing the battery connector [X1], reconnecting and then switching the truck on again.
Table 11: List of error codes Code Description
Possible cause / Hint or Solution
C3
TLS impact warning
The impact sensor of the TLS system has triggered and all truck modes have been locked. / Reset the TLS unit.
C4
TLS “deactivated” warning
The TLS system is not in the standard travel mode and all truck modes have been locked. / Switch the TLS unit to the standard mode.
C19
Default parameter warning
One or more parameter values may be outside the normal max./min. limits. These parameter values will be reset to the default values. / If this code is displayed, it may become necessary to verify all parameter settings.
C20
Butterfly warning
Problem with speed control & travel direction selector [L1]. The speed control may have been actuated during start-up. Faulty sensor(s) [A2]. / Verify operation of the speed control.
C28
Emergency switch warning
Emergency switch [S21] activated. No voltage supply to transistor regulator [A1]. Harness problem. / Check emergency switch is not depressed. Check wiring.
C29
Service time warning
Time for next service. / Verify the service parameter. The parameter may not have been reset during the most recent service intervention. / See parameter #25 - Service interval on page 48 for setting of parameter.
C31
Pressure sensor warning
Not applicable on this truck type.
C41
Battery undervoltage warning
Battery voltage < 17 volt - battery due for charging. Battery parameter may not be correctly adjusted. / See # 21 - Battery size on page 47 for setting of parameter #21. Burnt fuse [A1]. / Change [A1].
C42
Battery overvoltage warning
Battery voltage > 33 volt. Can occur with a fully charged battery and hard reverse braking.
C43
Transistor regulator thermal cutback
Driving may be too intensive. Defective transistor regulator [A1].
11- 28
Service Manual
7SM08F
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