SECONDARY AIR INJECTION (AIR) PUMP CONSTRUCTION/OPERATION
id011600664500
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1
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Motor
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2
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To AIR control valve
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3
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From atmosphere
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4
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Secondary air flow
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• Mainly consists of a DC motor and fan.
• When the AIR pump relay is turned on due to a PCM signal, the motor drives the pump fan to discharge secondary air.
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1
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AIR pump relay
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2
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AIR pump
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3
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PCM
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