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Preparing test with quiescent current retention unit - AR54.10-P-1030-01P

Fig 1: Identifying Electrical Connection Set (201 589 00 99 00)
G07744400Courtesy of MERCEDES-BENZ USA
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Number Designation
WH58.30-Z-1001-09A Multimeter
WH58.30-Z-1012-09A Quiescent current retention unit
  1. Connect the quiescent current retention unit (7) as follows:
    • Connect clip on positive lead (+) to positive terminal on battery.
    • Connect clip on negative lead (-) to battery ground point (W10).
  2. Switch on quiescent current retention unit (7).

    Shown on model 203 

    Fig 2: Identifying Connection Of Current Retention Unit With Battery Ground Point
    G07109249Courtesy of MERCEDES-BENZ USA
  3. Disconnect negative terminal clip on battery.
  4. Connect multimeter (2) as follows using MPECIAL TOOL electrical connection set:
    • Connect positive test cable (+) to negative battery cable (1).
    • Connect negative test cable (-) to negative battery terminal (3).

    Shown on model 203 

    Fig 3: Identifying Positive Test Cable (+) To Negative Battery Cable
    G07109250Courtesy of MERCEDES-BENZ USA
  5. Switch on multimeter (2) (measuring range in amperes).
  6. Switch off and disconnect quiescent current retention unit (7)
  7. Route measurement cable (6) out of the engine compartment (on models 203, 209)/passenger compartment (on model 463).

Shown on model 203. 

Fig 4: Identifying Multimeter
G07742145Courtesy of MERCEDES-BENZ USA