Oxygen Sensor Relay: Testing and Inspection

A/F RELAY

ON-VEHICLE INSPECTION

1. REMOVE A/F RELAY (Marking: A/F HTR)

a. Remove the engine room No. 8 relay block cover.
b. Remove the relay from the engine room No. 8 relay block.

2. CHECK A/F RELAY




a. Measure the resistance of the relay.




If the result is not as specified, replace the relay.

3. INSTALL A/F RELAY