Lop Alarms - MTU 8 V 2000 M70 Operating Instructions Manual

6.2 LOP alarms

LOP
At the LOP, alarm texts and measuring-point messages are indicated on the DIS. Explanation of the dis‐
played texts can be gathered by pressing the help key on the touch screen. Alarms can also be caused
by defective sensors / actuators. Contact Service to have sensors/actuators tested and replaced as nec‐
essary if troubleshooting as described in the table below proves unsuccessful.
Display text
AL RCS Speed De‐
mand Defect
AL Battery Charger
Fail
AL Press Monitoring
Fail (EMU)
AL ECU Defect
AL Power Amplifier 1
Fail
AL Power Amplifier 2
Fail
AL Gear Control Fail
(GCU)
70 | Troubleshooting | MW15407/14E 2012-02
Meaning
No speed demand signal
No battery charging
EMU pressure monitoring failure
ECU 4 is defective
Power amplifier cylinder side A failure
Power amplifier cylinder side B failure
GCU failure
Task
1. Check remote control system;
2. Check LOP visually (→ Page 154).
3. Perform LOP test procedures
(→ Page 156).
4. Check ECU plug-in connections
(→ Page 149).
5. Check engine wiring (→ Page 145).
1. Check power circuit breakers and
fuses;
2. Check transistor controllers.
Contact Service
• Have EMU replaced.
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 ECU checked and re‐
placed, if required.
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 ECU checked and re‐
placed, if required.
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 ECU checked and re‐
placed, if required.
Contact Service
• Have GCU solenoid valve checked
and replaced, if required;
• Have GCU wiring checked and re‐
placed, if required.