MTU 12 V 2000 M40A Operating Instructions Manual page 136

Display text
AL Output Stage
Bank 2 Fault
AL Override Activat‐
ed
AL Power Failure
Control
AL Power Failure
Monitoring
AL Transistor Output
1/2 Fail
AL Transistor Output
3/4 Fail
AL Water in Fuel Pre‐
filter
DL 211+A001-A001
DL 211+A001-A010
DL 211+A001-A020
136 | Troubleshooting | MS150031/05E 2013-01
Meaning
Fault message re. power amplifier, cyl‐
inder bank B
Safety system overridden
Power failure of control system
Power failure
One of the ECU 4 transistor outputs
(TAA1 or TAA2) defective
One of the ECU 4 transistor outputs
(TAA3 or TAA4) defective
Water in fuel prefilter
DIS not recognized on default bus
LCU of LOP 1 (PIM No. 21.X+A001-
A010) not recognized on default bus
LMU of LOP 1 (PIM No. 21.X+A001-
A020) not recognized on default bus
Measure
1. Check LOP visually (→ Page 230).
2. Perform LOP test procedures
(→ Page 232).
3. Check ECU plug connection
(→ Page 225).
4. Check engine wiring (→ Page 221).
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 185).
1. Check LOP visually (→ Page 230).
2. Perform LOP test procedures
(→ Page 232).
3. Check ECU plug connection
(→ Page 225).
4. Check engine wiring (→ Page 221).
5. Contact Service.
• Have DIS checked and replaced
if required.
1. Check LOP visually (→ Page 230).
2. Perform LOP test procedures
(→ Page 232).
3. Check ECU plug connection
(→ Page 225).
4. Check engine wiring (→ Page 221).
5. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A010 checked and re‐
placed if required.
1. Check LOP visually (→ Page 230).
2. Perform LOP test procedures
(→ Page 232).
3. Check ECU plug connection
(→ Page 225).
4. Check engine wiring (→ Page 221).
5. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A020 checked and re‐
placed if required.