S60 2.5T AWD L5-2.5L Turbo VIN 59 B5254T2 (2004)
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Ignition off
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the control module disconnected
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Switch off all equipment that takes power from the battery (courtesy lighting, radio etc).
Connect an ohmmeter between terminal #16 on the breakout box and the battery negative terminal.
To connect the breakout box, see Connecting the breakout box See: Pinout Values and Diagnostic Parameters/Connecting the Breakout Box, Steering
Wheel Module (SWM).