S40 L4-1.9L Turbo VIN 29 B4204T3 (2001)
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Ignition on
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Audio unit disconnected.
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Check the voltage (30-supply) between terminal #A12 (#26 on the breakout box) and terminal #A1 (#15 on the breakout box)
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With the ignition on, check the voltage (15-supply) between terminal #A12 (#26 on the breakout box) and terminal #A2 (#16 on the breakout
box).
The voltmeter must read approximately 12 V for both readings.
