• Reduces voltage by routing it through the fuel pump resistor to protect the fuel pump when required fuel amount is low due to low engine speed.
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1
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Fuel pump speed control relay OFF
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2
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Fuel pump speed control relay ON
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3
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Fuel pump relay
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4
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PCM
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5
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Fuel pump speed control relay
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6
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Fuel pump resistor
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7
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Fuel pump
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8
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Current flow
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