Prerequisites for testing alternator - AR15.40-P-5009F

ENGINE 104.945/995,111.942/947/970,112.911/914/921/941,113.940,119.985,602.982, 604.912/917, 605.912 /962, 606.912 /962, 611.961, 612.961, 613.961 in MODEL 210 

Connection schematic between battery and alternator 

Fig 1: Connection Schematic Between Battery And Alternator

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.

	Removing, installing
1.1	Remove rear seat	Model 210 sedan.	AR91.12-P-1700F
1.2	Fold rear seat cushion forwards and remove battery compartment cover	Model 210 T-model.
	Testing
2	Check the alternator fuse (G2) in the connector terminal 30 (X12/3) and replace if necessary	Only in vehicles as of 6.99 (except with engines 112, 113) Replace:  The entire connector terminal 30 (X12/3) must be replaced.
3	Check electrical line terminal 30 to the following items for firm seat and flawless condition	Battery (G1/+) Connector terminal 30 (X4) Connector terminal 30 (X12/3) Alternator (G2/B+)
4	Check electrical line terminal 31 to the following items for firm seat and flawless condition	Battery (G1/-) Battery ground (W10) Ground strap between engine and body
5	Check ribbed V-belt tension
6	Check function of the charge indicator lamp in the instrument cluster		*BE54.30-P-1001-01A
7	Install in the reverse order