MTU 8V2000M40A User Manual

Fault
code
Alarm text Meaning Task
118 L1 SUPPLY VOLT.
LOW
Supply voltage too low (1st lim-
it)
Check ECU supply voltage.
119 L2 SUPPLY VOLT.
LOW
Supply voltage too low (2nd
limit)
Check ECU supply voltage.
120 L1 SUPPLY VOLT.
HIGH
Supply voltage too high (1st
limit)
Check ECU supply voltage.
121 L2 SUPPLY VOLT.
HIGH
Supply voltage too high (2nd
limit)
automatic engine shutdown
(depending on project design)
Check ECU supply voltage.
If engine was stopped: Start engine
(→ Page 114).
122 L1 T-ELECTRONIC Temperature in ECU housing
too high (1st limit)
1. Improve engine room ventilation.
2. Reduce engine power.
134 15V POS ECU DE-
FECT
Electronic equipment defective;
automatic engine shutdown
Contact Service.
136 15V NEG ECU DE-
FECT
Electronic equipment defective;
automatic engine shutdown
Contact Service.
137 L1 5V BUFFER
TEST
Power supply for pressure sen-
sors defective.
1. Disconnect connectors X2 and X3 from
ECU. If alarm does not disappear: Con-
tact Service.
2. Check wiring (pressure sensors).
3. Contact Service.
138 SENSORPOWER-
DEFECT
Power supply for pressure sen-
sors defective.
1. Disconnect connectors X2 and X3 from
ECU. If alarm does not disappear: Con-
tact Service.
2. Check wiring (pressure sensors).
3. Contact Service.
139 L1 TE BUFFER
TEST
Internal electronic fault (tem-
perature sensors)
Contact Service.
140 TE BUF. ECU DE-
FECT
Internal electronic fault (tem-
perature sensors)
Contact Service.
142 BANK1 ECU DE-
FECT
Internal electronic fault;
Engine does not start
Contact Service.
144 BANK2 ECU DE-
FECT
Internal electronic fault;
Engine does not start
Contact Service.
145 15V_GOOD ECU
DEFECT
Electronic equipment defective;
automatic engine shutdown
Contact Service.
146 L1 AD-TEST1 SUP-
PLY
A/D-converter supply voltage
too low
Contact Service.
147 AD-TEST1 ECU
DEFECT
Electronic equipment defective;
automatic engine shutdown
Contact Service.
148 L1 AD-TEST2 SUP-
PLY
A/D-converter supply voltage
too low
Contact Service.
149 AD-TEST2 ECU
DEFECT
Electronic equipment defective;
automatic engine shutdown
Contact Service.
150 L1 AD-TEST3 SUP-
PLY
A/D-converter supply voltage
too low
Contact Service.
151 AD-TEST3 ECU
DEFECT
Electronic equipment defective;
automatic engine shutdown
Contact Service.
124 | Troubleshooting | MS150031/06E 2016-010
TIM-ID: 0000003157 - 001

MTU 8V2000M40A Specifications

General

Brand	MTU
Model	8V2000M40A
Category	Engine
Language	English