Display text
Meaning
Measure
AL Power Amplifier 2
Failure
Power amplifier cylinder bank B fault
1. Check LOP visually (→ Page 157);
2. Perform LOP test procedures
(→ Page 160);
3. Check ECU plug-in connections
(→ Page 153);
4. Check engine wiring (→ Page 149);
5. Contact Service.
• Have ECU checked and re‐
placed, if required.
AL Override Activat‐
ed
Safety system overridden
Status message:
• Override activated.
AL Power Failure
Control
Power failure of control system
Check power circuit breakers and
fuses.
AL Power Failure
Monitoring
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
required.
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
required.
AL Water in Fuel Pre‐
filter
Water in fuel prefilter
Drain fuel prefilter (→ Page 108).
DL 211+A001-A001
DIS not recognized on default bus
1. Check LOP visually (→ Page 157);
2. Perform LOP test procedures
(→ Page 160);
3. Check ECU plug-in connections
(→ Page 153);
4. Check engine wiring (→ Page 149);
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 recognized on default bus
1. Check LOP visually (→ Page 157);
2. Perform LOP test procedures
(→ Page 160);
3. Check ECU plug-in connections
(→ Page 153);
4. Check engine wiring (→ Page 149);
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 157);
2. Perform LOP test procedures
(→ Page 160);
3. Check ECU plug-in connections
(→ Page 153);
4. Check engine wiring (→ Page 149);
5. Contact Service.
• Have MPU 23 of PIM No. 21.X
+A001-A020 checked and re‐
placed, if required.
76 | Troubleshooting | MS15021/01E 2012-02
TIM-ID: 0000008900 - 002
