Preparation for Test: 1. Battery voltage > 11 V, 2. Fuses ok, 3. Disconnect the battery negative cable prior to disconnecting or connecting any of the connectors of the control modules, otherwise fault codes may be stored in error in the memory. 4. CAN data lines are ok, see 23 For test measuring purposes, the CAN connection to the following control modules must be connected: PSE control module (A37) Signal pickup-and activation module (SAM) (N10/1) Electrical Wiring Diagrams: See Electric Troubleshooting Manual: Model 202, Groups 00, 54, 67, 82 Model 208, Groups 00, 54, 67, 82 Model 210, Groups 00, 54, 67, 82

Conventional tools, test equipment

Description	Brand, model, etc.
Multimeter 1)	Fluke models 23, 83, 85, 87

1) Available through the MBUSA Standard Equipment Program.