HEATED OXYGEN SENSOR (HO2S) INSPECTION [ZJ, ZY]

id0140c4802300

Sensor Output Value Inspection (HO2S)

1.  Perform the inspection according to the following procedure using the PID/DATA monitor function. (See ON-BOARD DIAGNOSTIC TEST [ZJ, ZY].)

(1)  Start the engine and warm it up.

(2)  Drive the vehicle.

(3)  Release the accelerator pedal while the engine speed is at 3,000 rpm and verify that the following monitor items fluctuate as shown in the figure while the vehicle decelerates.

•  VSS

•  RPM

•  O2S12

am2zzw00000968

(4)  If not as specified, replace HO2S. (See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [ZJ, ZY].)

Resistance Inspection (HO2S heater)

1.  Disconnect the HO2S connector.

2.  Measure the HO2S resistance between terminals C and D.

am2zzw00000970

•  If not as specified, replace the HO2S. (See HEATED OXYGEN SENSOR (HO2S) REMOVAL/INSTALLATION [ZJ, ZY].)