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.