7 – 22 Repair Manual RRE140/160/180/200/250 © BT
Troubleshooting
Warning and error codes
T-code Valid from serial number Date Publication No.
815, 816 6051502 2008-08-21 261828-040
2:511 CAN 2 error
1. Check that CAN 1 is intact in terms of wiring harness,
final resistance and contacts.
2. Withdraw the battery contact. Check that the resistance
between positions 8 and 22 in X130 is 54 – 66 ohms.
3. Uninstall and disconnect the CAN 2 modules, one after
the other.
2:512 CAN 1 communication
error
The MCU has problems with sending messages via CAN 1.
See 2:510.
2:513 CAN 2 communication
error
The MCU has problems with sending messages via CAN 2.
See 2:511.
2:514 DHU login error No response to login received from DHU/TWIS.
Check that the login settings (parameters) are correct.
Check the DHU with regard to wiring harness and power
supply.
2:523 Battery current is high The current from the battery exceeds 800 A.
2:531 Internal + 5 V error Internal 5 V electrical supply is under 4.9 V
Replace the MCU.
2:532 Internal + 5 V error Internal voltage 5 V electrical supply exceeds 5.5 V
Replace the MCU.
2:533 Internal + 15 V error Internal voltage 15 V electrical supply is under 14.25 V
Replace the MCU.
2:534 Internal + 15 V error Internal voltage 15 V electrical supply exceeds 15.75 V
Replace the MCU.
2:537 Internal + V O error +V O electrical supply for digital output signals is under 9.7
V.
Check electrical supply to the MCU.
2:538 Internal + V O error +V O electrical supply for digital output signals is over 12 V.
Check electrical supply to the MCU.
2:540 Error on digital output sig-
nal 3
Output signal for main contactor has been short-circuited.
1. Check the magnetic coils, the electrical supply, contacts
and wiring harness with regard to a short circuit.
2. Check that the main contactor works.
3. Replace the MCU.
Code Name Description/possible causes
Event Action
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