Preparation for Test: 1. Fuses for PSE system and PSE control module ok, 2. Battery voltage 11 - 14 V, 3. Provide acess to PSE control module (A37), 4. Provide access to combination control module (N10-1 or N10-3), 5. Connect socket box with test cable according to connection diagram, see 22, Figure 1 - 3. Electrical Wiring Diagrams: See Electric Troubleshooting Manual, Model 170, (please see future ETM), Model 210, Volume 2, group 80

Conventional tools, test equipment

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

1) Available through the MBUSA Standard Equipment Program.