S40 L5-2.4L VIN 38 B5244S4 (2004)
Continue - DONE
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Checking the Supply Voltage/Ground Terminal, Multimedia Module (MMM)
Checking the supply voltage/ground terminal
Checking the power supply and ground terminals
Power supply multimedia module (MMM)
The multimedia module (MMM) is powered via a power input on the control module.
When the ignition is on, the power input is powered and the multimedia module (MMM) is in active mode.
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Power input 1 (terminal #21 (#A1)) is powered via a fuse from the central electronic module (CEM). The multimedia module (MMM) will not be
activated if there is an open-circuit.
Checking the power supply
Check the power supply cable from the battery to the central electronic module (CEM) and from the central electronic module (CEM) to multimedia
module (MMM) terminal #21 (#A1). Check for an open-circuit. Check for loose connections. Check for contact resistance. Check for oxidation. Check
the fuse. The voltage must be approximately battery voltage when the ignition is on.
Ground terminal multimedia module (MMM)