MTU 8 V 2000 M40A - Page 100

Display text Meaning Task
AL Power Amplifier 2
Fail
Power amplifier cylinder side B failure 1. Check LOP visually (→ Page 181).
2. Perform LOP test procedures
(→ Page 183).
3. Check ECU plug-in connections
(→ Page 176).
4. Check engine wiring (→ Page 172).
5. Contact Service
• Have ECU checked and re‐
placed, if required.
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 136).
DL 211+A001-A001 Display panel DIS not detected on de‐
fault bus
1. Check LOP visually (→ Page 181).
2. Perform LOP test procedures
(→ Page 183).
3. Check ECU plug-in connections
(→ Page 176).
4. Check engine wiring (→ Page 172).
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 181).
2. Perform LOP test procedures
(→ Page 183).
3. Check ECU plug-in connections
(→ Page 176).
4. Check engine wiring (→ Page 172).
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 181).
2. Perform LOP test procedures
(→ Page 183).
3. Check ECU plug-in connections
(→ Page 176).
4. Check engine wiring (→ Page 172).
5. Contact Service
• Have MPU 23 of PIM No. 21.X
+A001-A020 checked and re‐
placed, if required.
100 | Troubleshooting | MS150031/03E 2011-10
TIM-ID: 0000008898 - 001