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

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ENGINE 272, 273, 642 in MODEL 164 

Fig 1: Identifying STAR DIAGNOSIS And Data Link Connector
G06878126Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
INSPECT Check     
DANGER Risk of explosion  caused by oxyhydrogen gas. Risk of poisoning and caustic burns  caused by swallowing battery acid. Risk of injury  caused by burns to skin and eyes from battery acid or when handling damaged lead-acid batteries No fire, sparks, open flames or smoking. Wear acid-resistant gloves, clothing and glasses. Only pour battery acid into suitable and appropriately marked containers. AS54.10-Z-0001-01A
NOTES Information on preventing damage to electronic components due to electrostatic discharge   AH54.00-P-0001-01A
NOTES Notes on battery   AH54.10-P-0001-01A
1 Check status of batteries IMPORTANT Assess the results, replace battery if required.  
    Model 164 AR54.10-P-1129GZ
    Model 251 AR54.10-P-1129RT
2 Connect up STAR DIAGNOSIS (0100) to data link connector (X11/4)   AD00.00-P-2000-04A
DANGER 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) IMPORTANT Only perform tests when engine at its normal operating temperature.
Checking is menu-assisted:
  • Engine control unit
  • actuations
  • alternator diagnosis
 
4 Disconnect STAR DIAGNOSIS (0100).   AD00.00-P-2000-04A