mazda Workshop Repair Guides

Mazda Workshop Service and Repair Manuals

Relays and Modules - Fuel Delivery and Air Induction > < Main Relay (Computer/Fuel System)|Locations|Page 961
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Oxygen Sensor Relay: Testing and Inspection

1.  

Check that a "clicking" sound is heard at the oxygen sensor relay when turning the ignition switch OFF and ON.

Testing Relay

2.  

Apply 12 volts and a ground to relay terminals "A" and "B".

3.  

Check for continuity at relay terminals "C" and "D" with an ohmmeter.  With 12 volts applied at terminals "A" and "B", there should be continuity
between terminals "C" and "D".  With the voltage removed, there should no longer be continuity between the two terminals.

Relays and Modules - Fuel Delivery and Air Induction > < Main Relay (Computer/Fuel System)|Locations|Page 961