MID 128, PID 105 Intake manifold
temperature
FMI 0 – Data valid but above normal operational range
Fault code explanation: Intake manifold temperature is too high
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 3.2
Value fault: 6.2
Symptom: Engine is derated if the engine protection parameter is activated.
Conditions for fault code: Intake manifold temperature exceeds the set value of the engine protection
parameter.
Possible reason: • Engine temperature is too high.
•
High surrounding temperature. (Faulty air inlet temperature sensor,
only on TAD1250-1252VE and TAD1350-1352GE).
•
Dust or dirt on the outside of the intercooler and the radiator.
• Faulty intake manifold temperature sensor.
Suitable action: 1 Check that the engine temperature is normal.
2 Check the air inlet temperature sensor, only on TAD1250-1252VE and
TAD1350-1352GE.
3 Clean the intercooler and the radiator.
4 Check the intake manifold temperature sensor.
FMI 4 – Voltage below normal or shorted to lower voltage
Fault code explanation: Faulty sensor / Faulty sensor circuit
Fault indication: DCU: Engine warning in DCU display.
CIU: Flash code
Flash code
Electrical fault: 3.2
Value fault: 6.2
Conditions for fault code: The voltage on pin A47 on the EMS2 is less than 0.07 Volt.
Possible reason: • Short circuited sensor signal cable to battery negative.
•
Faulty sensor.
Suitable action: 1
Check the cable harness between the intake manifold temperature
sensor and EMS2.
2 Check the sensor.
30-2 Fault Tracing
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