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112418 – LO T-Exhaust B8
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.
112419 – LO T-Exhaust B9
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.
112420 – LO T-Exhaust B10
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.
112501 – HIHI T-Exhaust A1
Red alarm. Initiated by EMU.
Cause
Corrective action
Exhaust gas temperature of this
cylinder is too high in comparison
with weighted average.
1. Check emission values (→ Page 57).
2. Check ignition timing (→ Page 186).
3. Check valve drive (exhaust valves do not close).
112502 – HIHI T-Exhaust A2
Red alarm. Initiated by EMU.
Cause
Corrective action
Exhaust gas temperature of this
cylinder is too high in comparison
with weighted average.
1. Check emission values (→ Page 57).
2. Check ignition timing (→ Page 186).
3. Check valve drive (exhaust valves do not close).
76 | Troubleshooting | MS150116/04E 2018-04
TIM-ID: 0000038611 - 006