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Volvo Engine D13F Fault Code: SID 39 FMI 4 Engine Starter Motor Relay

Volvo Engine D13F Fault Code: SID 39 FMI 4 Engine Starter Motor Relay

CONTROL UNIT:
Engine ECU

DETECTION CONDITIONS:
The engine control unit (E-ECU) registers that the voltage is below 8 V (0.33 x Ubat).

SYMPTOM:
The starter motor can not be activated.

POSSIBLE CAUSES:
Short circuit to lower voltage.