Solved

Catalytic Converter Monitors Are Being Discussed

Question 21

Multiple Choice

Catalytic converter monitors are being discussed. Technician A says that if the converter is working, the downstream signal frequency should mirror the upstream sensor. Technician B says that the downstream sensor should provide a low-frequency voltage signal. Who is correct?


A) A only
B) B only
C) both A and B
D) neither A nor B

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