Impulse Count Readout

To retrieve codes, connect Impulse Counter (124 589 19 21 00) to diagnostic connector, or by connect Multimeter and Socket Box Tester (124 589 00 21 00) by test cables to CIS-E control unit or to MAS unit (if equipped). See Fig 1 . Connect appropriate tester as shown in appropriate illustration. See Fig 2 -5. On models equipped with V8 engine, use only multimeter, socket box tester and CIS-E control unit diagram.

Fig 1: Entering Self-Diagnostics Using Impulse Counter (California)
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.
Connect impulse counter leads to diagnostic connector pins No. 1 and No. 3. Connect red wire to battery voltage. See Figure and Figure . Using multimeter, connect leads to socket box tester pin sockets No. 1 and No. 2. Remove CIS-E control unit connector. Connect socket box tester connectors to CIS-E control unit and to CIS-E control unit harness connector as shown in appropriate illustration. See Fig 2 -5.

Fig 2: Entering Self-Diagnostics Using Socket Box Tester (Federal)

Courtesy of MERCEDES-BENZ OF NORTH AMERICA.