CAUTION:
To avoid damaging control modules all electrical testing should be done with a DVOM. DO NOT use an analog meter or test light to check control module circuits.
Fig 1: Identifying Special Tools
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 2: Connecting Socket Box To Control Module (Models 124, 202 & 210)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 3: Connecting Socket Box To Control Module (Model 129)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Fig 4: Connecting Socket Box To Control Module (Model 140)