MTU 12V2000M40A, Operating Instructions Manual

Page: 135 / 242

Display text Meaning Measure
AL Override Activated Safety system overridden Status message:
• Override activated.
AL Power Failure Con-
trol Power failure of control system Check power circuit breakers and fuses.
AL Power Failure Mon-
itoring Power failure Check power circuit breakers and fuses.
AL Transistor Output
1/2 Fail One of the ECU 4 transistor outputs
(TAA1 or TAA2) defective Contact Service.
• Have ECU checked and replaced if re-
quired.
AL Transistor Output
3/4 Fail One of the ECU 4 transistor outputs
(TAA3 or TAA4) defective Contact Service.
• Have ECU checked and replaced if re-
quired.
AL Water in Fuel Pre-
filter Water in fuel prefilter Drain fuel prefilter (→ Page 176).
DL 211+A001-A001 DIS not recognized on default bus 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.
DL 211+A001-A010 LCU of LOP 1 (PIM No. 21.X+A001-
A010) not recognized on default bus 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.
DL 211+A001-A020 LMU of LOP 1 (PIM No. 21.X+A001-
A020) not recognized on default bus 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.
DL 211+A003-ECU ECU 4 not recognized on default bus 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
TIM-ID: 0000008898 - 002