MTU 12 V 4000 M23F Operating Instructions Manual page 99

19 – HI T-Exhaust A
Exhaust temperature too high, A-side (limit value 1)
Yellow alarm; warning
Cause
Wiring damage.
20 – SS T-Exhaust A
Exhaust temperature too high, A-side (limit value 2)
Red alarm; engine shutdown
Cause
Wiring damage.
21 – HI T-Exhaust B
Exhaust temperature too high, B-side (limit value 1)
Yellow alarm; warning
Cause
Wiring damage.
22 – SS T-Exhaust B
Exhaust temperature too high, B-side (limit value 2)
Red alarm; engine shutdown
Cause
Wiring damage.
23 – LO Coolant Level
Coolant level too low (limit value 1)
Yellow alarm; warning
Cause
Leak in coolant circuit.
ZKP-Number: 2.0126.931
Corrective action
1. Check air filter and wiring (→ Page 265).
2. Contact Service.
ZKP-Number: 2.0126.932
Corrective action
1. Check air filter and wiring (→ Page 265).
2. Contact Service.
ZKP-Number: 2.0127.931
Corrective action
1. Check air filter and wiring (→ Page 265).
2. Contact Service.
ZKP-Number: 2.0127.932
Corrective action
1. Check air filter and wiring (→ Page 265).
2. Contact Service.
ZKP-Number: 2.0152.921
Corrective action
u Check coolant level in expansion tank (→ Page 234).
MS150068/01E 2014-01 | Troubleshooting | 99