Toyota Avalon (XX50) 2019-2022 Service & Repair Manual: Inspection

INSPECTION

PROCEDURE

1. INSPECT HEATED OXYGEN SENSOR (for Bank 1)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 (HT1B) - 2 (+B)	20°C (68°F)	5 to 10 Ω
1 (HT1B) - 4 (E2)	Always	10 kΩ or higher

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

*a	Component without harness connected (Heated Oxygen Sensor)

2. INSPECT HEATED OXYGEN SENSOR (for Bank 2)

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

Standard Resistance:

Tester Connection	Condition	Specified Condition
1 (HT2B) - 2 (+B)	20°C (68°F)	5 to 10 Ω
1 (HT2B) - 4 (E2)	Always	10 kΩ or higher

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

*a	Component without harness connected (Heated Oxygen Sensor)

Toyota Avalon (XX50) 2019-2022 Service & Repair Manual > Theft Deterrent System(for Gasoline Model): Power Source Circuit
DESCRIPTION Based on changes in the power source voltage, the main body ECU (multiplex network body ECU) can detect if the battery has been disconnected and reconnected. WIRING DIAGRAM CAUTION / NOTICE / HINT NOTICE: Before replacing the main body ECU (multiplex network body ECU), refer to Registrat ...

Toyota Avalon (XX50) 2019-2022 Owners Manual