Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

Or, hide this message: temporarily or permanently

Heated Oxygen Sensor





2AZ-FE ENGINE CONTROL: HEATED OXYGEN SENSOR: INSPECTION

1. INSPECT HEATED OXYGEN SENSOR (for 4WD)

(a) Check the resistance.





(1) Using an ohmmeter, measure the resistance between the terminals.

Standard Resistance:





If the resistance is not as specified, replace the heated oxygen sensor.

2. INSPECT HEATED OXYGEN SENSOR (for 2WD)

(a) Check the resistance.





(1) Using an ohmmeter, measure the resistance between the terminals.

Standard Resistance:





If the resistance is not as specified, replace the heated oxygen sensor.