MTU 8V2000M40A Operating Instructions Manual page 135

Display text Meaning
AL Override Activated Safety system overridden
AL Power Failure Con- Power failure of control system
trol
AL Power Failure Mon- Power failure
itoring
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
DL 211+A003-ECU ECU 4 not recognized on default bus
Measure
Status message:
• Override activated.
Check power circuit breakers and fuses.
Check power circuit breakers and fuses.
Contact Service.
• Have ECU checked and replaced if re-
quired.
Contact Service.
• Have ECU checked and replaced if re-
quired.
Drain fuel prefilter (→ Page 176).
1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Check engine wiring (→ Page 218).
5. Contact Service.
• Have DIS checked and replaced if
required.
1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Check engine wiring (→ Page 218).
5. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A010 checked and re-
placed if required.
1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Check engine wiring (→ Page 218).
5. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A020 checked and re-
placed if required.
1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Check engine wiring (→ Page 218).
5. Contact Service.
• Have ECU checked and replaced
if required.
MS150031/06E 2016-010 | Troubleshooting | 135