MTU 12V2000M40A, Operating Instructions Manual

Page: 136 / 242

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DL 211+A004-EMU EMU 1 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 EMU checked and replaced
if required.
HI P-Oil Filter Differ-
ence Oil pressure difference between oil pres-
sure upstream of filter and oil pressure
downstream of filter too high Replace engine oil filter (→ Page 195).
MG Start condition
check Conditions for starting not met Check start conditions and fulfill if nec-
essary.
RL 211+A001-A001 DIS not recognized on redundant bus 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Contact Service.
• Have DIS checked and replaced if
required.
RL 211+A001-A010 LCU of LOP 1 (PIM No. 21.X+A001-
A010) not recognized on redundant bus 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A010 checked and re-
placed if required.
RL 211+A001-A020 LMU of LOP 1 (PIM No. 21.X+A001-
A020) not recognized on redundant bus 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A020 checked and re-
placed if required.
RL 211+A003-ECU ECU 4 not recognized on redundant bus 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Check ECU plug connection
(→ Page 222).
4. Contact Service.
• Have ECU checked and replaced,
if required.
RL 211+A004-EMU EMU 1 not recognized on redundant bus 1. Check LOP visually (→ Page 226).
2. Perform LOP test procedures
(→ Page 228).
3. Contact Service.
• Have EMU checked and replaced
if required.
SS Safety System Fail-
ure (EMU) Safety system has determined fault on
Engine Monitoring Unit Contact Service.
136 | Troubleshooting | MS150031/06E 2016-010
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