![MTU 20V4000L32FB Operating Instructions Manual Download Page 72](http://html1.mh-extra.com/html/mtu/20v4000l32fb/20v4000l32fb_operating-instructions-manual_1852707072.webp)
112402 – LO T-Exhaust A2
Yellow alarm. Initiated by EMU.
Cause
Corrective action
Exhaust gas temperature of this
cylinder is too low in comparison
with weighted average.
1. Check igniter.
2. Check emission values (→ Page 57).
3. Check ignition timing (→ Page 186).
4. Check valve drive.
5. Check wiring on the ignition rail/ignition coil for thermal and
mechanical damage.
112403 – LO T-Exhaust A3
Yellow alarm. Initiated by EMU.
Cause
Corrective action
Exhaust gas temperature of this
cylinder is too low in comparison
with weighted average.
1. Check igniter.
2. Check emission values (→ Page 57).
3. Check ignition timing (→ Page 186).
4. Check valve drive.
5. Check wiring on the ignition rail/ignition coil for thermal and
mechanical damage.
112404 – LO T-Exhaust A4
Yellow alarm. Initiated by EMU.
Cause
Corrective action
Exhaust gas temperature of this
cylinder is too low in comparison
with weighted average.
1. Check igniter.
2. Check emission values (→ Page 57).
3. Check ignition timing (→ Page 186).
4. Check valve drive.
5. Check wiring on the ignition rail/ignition coil for thermal and
mechanical damage.
112405 – LO T-Exhaust A5
Yellow alarm. Initiated by EMU.
Cause
Corrective action
Exhaust gas temperature of this
cylinder is too low in comparison
with weighted average.
1. Check igniter.
2. Check emission values (→ Page 57).
3. Check ignition timing (→ Page 186).
4. Check valve drive.
5. Check wiring on the ignition rail/ignition coil for thermal and
mechanical damage.
72 | Troubleshooting | MS150116/04E 2018-04
TIM-ID: 0000038611 - 006