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A vehicle has a secondary air injection system that delivers air to the dual-bed catalytic ...

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A vehicle has a secondary air injection system that delivers air to the dual-bed catalytic ...

A vehicle has a secondary air injection system that delivers air to the dual-bed catalytic converter. This vehicle fails an emissions test for CO (Carbon Monoxide) and HC (Hydrocarbons). Engine operation is normal, but the owner complains about excessive fuel consumption. A diagnostic trouble code (DTC) is stored indicating secondary air injection system air flow is always upstream. Technician A says the secondary air injection diverter (AIRD) solenoid plunger may be sticking open. Technician B says the secondary air injection diverter (AIRD) valve may be sticking. Who is right?

▸ Technician A

▸ Technician B

▸ Both technicians

▸ Neither technician

Textbook

Advanced Engine Performance Diagnosis

Edition: 4^th

Author: Halderman

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coolcat Author

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Just got PERFECT on my quiz

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