Accord LX Sedan L4-2254cc 2.3L SOHC (VTEC) MFI (1998)
Oxygen Sensor Relay: Testing and Inspection
Normally-open type A:
Check for continuity between the terminals.
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There should be continuity between the No.1 and No.2 terminals when power and ground are connected to the No.3 and No.4 terminals.
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There should be no continuity between the No.1 and No.2 terminals when power is disconnected.
Type 1
Type 2
Heated Oxygen Sensor Relay (California)