spn-677-fmi-4 Mercedes Fault Code :
Read the description of spn-677-fmi-4 in KAMA3-5490 and the engine lights up for KAMA3 5490 Fault Codes code, there are some possible causes for it.
Fault Location
Output Relay 1 (REL 1)
Fault Description
Short Circuit to Ground
Fault PIN
15/12