Checking regulator and alternator - AR15.40-P-5000EW

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ENGINES 272, 273, 642, 651 in MODEL 212

Fig 1: Diagnostic System & Connector

Courtesy of MERCEDES-BENZ USA

	Checking
1	Check status of batteries	Determine findings and replace faulty battery if necessary.
	Notes on battery	Determine findings and replace faulty battery if necessary.	AH54.10-P-0001-01A
2	Connect STAR DIAGNOSIS (0100) to diagnostic connector (X11/4)
	Risk of accident caused by vehicle starting off by itself when engine is running. Risk of injury caused by contusions and burns during starting procedure or when working near the engine as it is running	Secure vehicle to prevent it from moving by itself. Wear closed and snug-fitting work clothes. Do not touch hot or rotating parts.	AS00.00-Z-0005-01A
3	Test alternator using STAR DIAGNOSIS (0100)	Only perform tests when engine at its normal operating temperature. Tests are menu-assisted: Engine control module Actuations Alternator diagnosis	AS00.00-Z-0005-01A