Left Cylinder Bank ME-SFI Control Module (N3/11)
WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 Mercedes-Benz SL600, 2001 Mercedes-Benz SL600, 2000 Mercedes-Benz SL600, 1999 Mercedes-Benz SL600, and 1998 Mercedes-Benz SL600. However, it is still accessible from the selected car via links, so may be relevant.
Connect DVOM between left cylinder bank ME-SFI control module (N3/11) connector 1 terminals No. 45 and 25 (socket box terminals No. 45 and 25). Turn ignition on. Voltage should be 11-14 volts. If voltage is within specification, test is complete. If voltage is not within specification, possible cause is wiring harness failure. Repair as necessary.