122 – HI T-ECU
Cause
Corrective action
The temperature inside the ECU
has violated the limit value. The
internal temperature is too high.
1. Disconnect power supply.
2. Check power supply (plant).
3. Contact Service.
180 – AL CAN1 Node Lost
Cause
Corrective action
Connection or communication
with a node on CAN bus 1 has
failed.
1. Check engine wiring (→ Page 157).
2. Disconnect power supply, then reconnect.
3. Contact Service.
181 – AL CAN2 Node Lost
Cause
Corrective action
Connection or communication
with a node on CAN bus 2 has
failed.
1. Check engine wiring (→ Page 157).
2. Disconnect power supply, then reconnect.
3. Contact Service.
186 – AL CAN1 Bus Off
Cause
Corrective action
CAN bus 1 for MTU Automation
(e.g. ECU/MAU/SAM) disrupted
or faulty.
1. Check plug connections to engine governor (→ Page 159).
2. Contact Service.
187 – AL CAN1 Error Passive
Cause
Corrective action
CAN bus 1 for MTU Automation
(e.g. ECU/MAU/SAM) disrupted
or faulty.
1. Check plug connections to engine governor (→ Page 159).
2. Contact Service.
188 – AL CAN2 Bus Off
Cause
Corrective action
CAN bus 2 to plant-side
automation (e.g. Murphy Display)
interrupted or faulty.
1. Check connection between plant automation system and MTU
automation system.
2. Contact Service.
189 – AL CAN2 Error Passive
Cause
Corrective action
CAN bus 2 to plant-side
automation (e.g. Murphy Display)
interrupted or faulty.
1. Check connection between plant automation system and MTU
automation system.
2. Contact Service.
68 | Troubleshooting | MS150100/06E 2017-08
TIM-ID: 0000064702 - 003
