XC90 AWD V8-4.4L VIN 85 B8444S (2005)
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. See the relevant wiring diagram for further information about ground terminals.
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 lead between multimedia module (MMM) terminal #25 (#A5) and the ground terminal. Check for an open-circuit. Check for loose
connections. Check for contact resistance and oxidation. With the ignition on, the drop in voltage between the ground connection for the multimedia
module (MMM) and the ground terminal must not be greater than 0.5 V.
Remedy as necessary.
Checking wiring and terminals See: Testing and Inspection/Component Tests and General Diagnostics/Checking Wiring and Terminals
To connect the breakout box, see Connecting the breakout box See: Pinout Values and Diagnostic Parameters/Connecting the Breakout
Box/Connecting the Breakout Box, Multimedia Module (MMM)
For information about signals, see Signal specification See: Pinout Values and Diagnostic Parameters/Signal Description/Signal Description,
Multimedia Module (MMM)
See the relevant wiring diagram for information about circuit and ground terminals in the bodywork.
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