Oxygen Sensor Relay: Testing and Inspection

2GR-FXE ENGINE CONTROL SYSTEM: A/F SENSOR HEATER RELAY: INSPECTION

1. INSPECT INTEGRATION RELAY (A/F)

(a) Check the A/F fuse.

(1) Measure the resistance according to the value(s) in the table below.

Standard Resistance:





If the result is not as specified, replace the A/F fuse.

(b) check the A/F relay.

(1) Measure the resistance according to the value(s) in the table below.





Standard Resistance:





Text in Illustration





NOTICE:
While using the battery for the inspection, do not bring the positive and negative tester probes too close to each other as a short circuit may occur.

If the result is not as specified, replace the engine room junction block assembly.