MTU 12 V 4000 L63 Operating Instructions Manual page 49

The two lines (16-digit) on the alarm side have the following structure:
• 1st line: fault description
The following information is given here:
• Time window (1)
The letter indicates when the fault occurred. It is updated automatically:
• A: currently active alarm
• B: within the last hour (active alarms switch to B immediately)
• C: within the past 1-4 hours
• D: within the past 4-12 hours
• E: more than 12 hours ago
• Fault type code (2)
These two letters indicate the source of a fault:
• SE
Stands for System Error. The fault number (→ Page 50) and the number of the device that
caused the fault indicated in the following.
• ECU (ADEC) – 02
• EMU – 03
• SAM – 06
• AL
This is a fault message from the SAM. This code is always followed by a 6-digit number indicat‐
ing the fault code from the SAM.
• EC
This is an alarm message from the engine governor. This code is always followed by a 3-digit
number (3) indicating the fault code from the engine governor.
• 2nd line: plain text message that rolls if the text has more than 16 characters, providing more informa‐
tion about the faults currently displayed.
Proceed to the next alarm by pressing key (↓ ↑).
Important information about fault messages from the SAM
Fault messages from the SAM are represented in the fault code list (→ Page 52).
Only persons with a corresponding qualification/training at MTU are allowed to carry out the measures
listed below.
Contact Service should troubleshooting as prescribed in the fault code list prove unsuccessful.
Important information about fault messages from the engine governor
Fault messages from the engine governor are represented in the fault code list (→ Page 102).
MS150058/01E 2012-07 | Troubleshooting | 49