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Remove/Install Electronic Diesel System (Eds) Control Unit - Ar07.08-D-7006SD

ENGINES 642.896 /992, 646.984 /985 /986 /989 /990 in MODEL 906 

Fig 1: Electronic Diesel System (EDS) Control Unit Component Locations
G08208155Courtesy of MERCEDES-BENZ USA
REMOVINGINSTALLING Remove/install     
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
1 Disconnect battery ground line   AR54.10-D-0003SD
2 Remove battery tray Only for code (E28) Additional battery 12 V 88 Ah AR54.00-D-0002SD
3 Pull locking lever (1, 3) to outside and disconnect electrical connectors (2, 4) at the CDI control unit (N3/20, N3/21 or N3/30) IMPORTANTInstallation:  Ensure correct seating of seals in electrical connectors (2, 4).  
4 Unclip CDI control unit (N3/20, N3/21 or N3/30) from the bracket (arrows) and remove    
5 Install in the reverse order    
6 Connect STAR DIAGNOSIS, read out DTC memory and erase if required    
REFER TO SELF-DIAGNOSTIC SYSTEMS Connect STAR DIAGNOSIS and read out fault memory   AD00.00-D-2000-04SD