MTU 8 V 2000 M51A Operating Instructions Manual page 153

Display text Meaning
AL Output Stage Fault message re. power amplifier, cyl‐
Bank 2 Fault inder bank B
AL Override Activat‐ Safety system overridden
ed
AL Power Failure Power failure of control system
Control
AL Power Failure Power failure
Monitoring
AL Transistor Output One of the ECU 4 transistor outputs
1/2 Fail (TAA1 or TAA2) defective
AL Transistor Output One of the ECU 4 transistor outputs
3/4 Fail (TAA3 or TAA4) defective
AL Water in Fuel Pre‐ Water in fuel prefilter
filter
DL 211+A001-A001 DIS not recognized on default bus
DL 211+A001-A010 LCU of LOP 1 (PIM No. 21.X+A001-
A010) not recognized on default bus
DL 211+A001-A020 LMU of LOP 1 (PIM No. 21.X+A001-
A020) not recognized on default bus
Measure
1. Check LOP visually (→ Page 243).
2. Perform LOP test procedures
(→ Page 245).
3. Check ECU plug connection
(→ Page 238).
4. Check engine wiring (→ Page 234).
5. Contact Service.
• Have ECU checked and re‐
placed if required.
Status message:
• Override activated.
Check power circuit breakers and
fuses.
Check power circuit breakers and
fuses.
Contact Service.
• Have ECU checked and replaced if
required.
Contact Service.
• Have ECU checked and replaced if
required.
Drain fuel prefilter (→ Page 198).
1. Check LOP visually (→ Page 243).
2. Perform LOP test procedures
(→ Page 245).
3. Check ECU plug connection
(→ Page 238).
4. Check engine wiring (→ Page 234).
5. Contact Service.
• Have DIS checked and replaced
if required.
1. Check LOP visually (→ Page 243).
2. Perform LOP test procedures
(→ Page 245).
3. Check ECU plug connection
(→ Page 238).
4. Check engine wiring (→ Page 234).
5. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A010 checked and re‐
placed if required.
1. Check LOP visually (→ Page 243).
2. Perform LOP test procedures
(→ Page 245).
3. Check ECU plug connection
(→ Page 238).
4. Check engine wiring (→ Page 234).
5. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A020 checked and re‐
placed if required.
MW15550/06E 2012-02 | Troubleshooting | 153