MTU 8 V 2000 M70 - Page 71

Display text Meaning Task
AL Gear Oil Filter
Clogged
Gear-Oil Filter Clogged Clean gear-oil filter and replace, if re‐
quired (see gearbox documentation).
AL Override Activat‐
ed
Engine safety system not active Status message:
• Override activated.
AL Power Fail Con‐
trol
Power failure of control system Check power circuit breakers and
fuses.
AL Power Fail Moni‐
toring
Power failure Check power circuit breakers and
fuses.
AL Transistor Output
1/2 Fail
One of the ECU transistor outputs
(TAA1 or TAA2) is defective
Contact Service
• Have ECU checked and replaced, if
required.
AL Transistor Output
3/4 Fail
One of the ECU transistor outputs
(TAA3 or TAA4) is defective
Contact Service
• Have ECU checked and replaced, if
required.
AL Water in Fuel Pre‐
filter
Water in fuel prefilter Drain fuel prefilter (→ Page 107).
DL 211+A001-A001 Display panel DIS not detected on de‐
fault bus
1. Check LOP visually (→ Page 154).
2. Perform LOP test procedures
(→ Page 156).
3. Check ECU plug-in connections
(→ Page 149).
4. Check engine wiring (→ Page 145).
5. Contact Service
• Have DIS checked and re‐
placed, if required.
DL 211+A001-A010 LCU of LOP 1 (PIM No. 21.X+A001-
A010) not detected on default bus
1. Check LOP visually (→ Page 154).
2. Perform LOP test procedures
(→ Page 156).
3. Check ECU plug-in connections
(→ Page 149).
4. Check engine wiring (→ Page 145).
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 detected on default bus
1. Check LOP visually (→ Page 154).
2. Perform LOP test procedures
(→ Page 156).
3. Check ECU plug-in connections
(→ Page 149).
4. Check engine wiring (→ Page 145).
5. Contact Service
• Have MPU 23 of PIM No. 21.X
+A001-A020 checked and re‐
placed, if required.
DL 211+A002-A030 GCU 1 (PIM No. 21.X+A002-A030) not
detected on default bus
1. Check LOP visually (→ Page 154).
2. Perform LOP test procedures
(→ Page 156).
3. Check ECU plug-in connections
(→ Page 149).
4. Check engine wiring (→ Page 145).
5. Contact Service
• Have GCU/GMU checked and
replaced, if required.
MW15407/14E 2012-02 | Troubleshooting | 71
TIM-ID: 0000008901 - 001