V50 T5 AWD L5-2.5L Turbo VIN 67 B5254T7 (2008)
(MMM) terminal #21 (#A1). Check for an open-circuit. Check for loose connections, contact resistance and oxidation. Check the fuse. The voltage must
be about the same as battery voltage with the ignition on.
Ground terminal multimedia module (MMM)
The multimedia module (MMM) has a ground input. The ground input from the control module is connected via a ground lead to the ground terminal in
the car body. For more information on ground connections, see the relevant wiring diagram.
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Ground input 1 (terminal #25 (#A5) is power ground and is connected to the ground terminal in the car body.
Checking ground terminal
Check the ground cable between the Multimedia module (MMM) terminal #25 (#A5) and ground terminal. Check for an open-circuit. Check for loose
connections, contact resistance and oxidation. At ignition on, the voltage-drop between Multimedia module (MMM) ground connection and chassis
connection may not be greater than 0.5 V.
Remedy as necessary.
Other information
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Checking wiring and terminals See: Testing and Inspection/Component Tests and General Diagnostics/Checking Wiring and Terminals
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Signal specification See: Pinout Values and Diagnostic Parameters/Signal Description, Multimedia Module (MMM)
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See the relevant wiring diagram for information about circuit and ground terminals in the bodywork.
Continue - DONE
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