VOLVOUU Engine D11L (Tier 4) Fault Code: SID 70 FMI 3 Air Inlet Heater Driver #1

VOLVOUU Engine D11L (Tier 4) Fault Code: SID 70 FMI 3 Air Inlet Heater Driver #1

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that the voltage is equal to Ubat.

SYMPTOM:
1. Relay may be continuously activated.
2. High cooling fan speed for charge-air cooling due to high inlet temperature.

POSSIBLE CAUSES:
Signal line short-circuited to Ubat.