Test 14: Activation Of Combination Control Module By Sun Roof Switch (Open Function)
WARNING: This page does not describe the selected car, but rather 8 other vehicles, including the 1998 Mercedes-Benz E430, 1998 Mercedes-Benz E320, 1998 Mercedes-Benz E300, 1997 Mercedes-Benz E420, and 1997 Mercedes-Benz E320. However, it is still accessible from the selected car via links, so may be relevant.
Using Adapter (140 589 12 63 00), connect Breakout Box (129 589 00 21 00) to combination control module. See Figure. With ignition switch in OFF position, open sun roof fully. Measure voltage between ground and terminal No. 71 at breakout box. Press sun roof switch to OPEN position, 3-5 volts should exist. If 3-5 volts does not exist, check wiring. See WIRING DIAGRAMS . Check sun roof switch. Replace or repair as necessary.