Volvo Engine D12D AE E3 (Tier 3) Fault Code: SID70 FMI 3 Air Inlet Heater Driver #1

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers:
1. Relay for preheating coil not activated.
2. That the voltage is above 0.65xUbat. (EB7)

SYMPTOM:
1. Relay may be continuously activated.
2. High cooling fan speed for charge-air cooling due to high inlet temperature.
3. High current consumption.
4. Poor battery.

POSSIBLE CAUSES:
1. Signal line short-circuited to Ubat. (EB7)
2. Relay continuously activated.

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