Component Inspection

WARNING: This page is about a different car, the 2018 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.

INSPECTION START
Will CONSULT be used?

Will CONSULT be used?

YES

GO TO 2.

NO

GO TO 3.

CHECK HEATED OXYGEN SENSOR 2

With CONSULT

Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT.
Start engine and warm it up to the normal operating temperature.
Turn ignition switch OFF and wait at least 10 seconds.
Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
Let engine idle for 1 minute.
Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)/(B2)" as the monitor item with CONSULT.

Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to ± 25%.

Courtesy of NISSAN NORTH AMERICA, INC.

	: The voltage should be above 0.72 V at least on time.
	: The voltage should be below 0.27 V at least on time.

"HO2S2 (B1)/(B2)" should be above 0.72 V at least once when the "FUEL INJECTION" is + 25%.

"HO2S2 (B1)/(B2)" should be below 0.27 V at least once when the "FUEL INJECTION" is - 25%.

Is the inspection result normal?

YES

INSPECTION END

Replace malfunctioning heated oxygen sensor 2. Refer to Removal and Installation (bank 2) , Removal and Installation (bank 1) .

CHECK HEATED OXYGEN SENSOR 2-I

Without CONSULT

Start engine and warm it up to the normal operating temperature.
Turn ignition switch OFF and wait at least 10 seconds.
Start engine and keep the engine speed between 3, 500 and 4, 000 rpm for at least 1 minute under no load.
Let engine idle for 1 minute.

Check the voltage between ECM harness connector terminals under the following conditions.

ECM			Condition	Voltage
Connector	+	-
	Terminal
F13	32	35	Revving up to 4, 000 rpm under no load at least 10 times	The voltage should be above 0.72 V at least once during this procedure. The voltage should be below 0.27 V at least once during this procedure.
	41

Is the inspection result normal?

YES

INSPECTION END

GO TO 4.

CHECK HEATED OXYGEN SENSOR 2-II

Check the voltage between ECM harness connector terminals under the following conditions.

ECM			Condition	Voltage
Connector	+	-
	Terminal
F13	32	35	Keeping engine at idle for 10 minutes	The voltage should be above 0.72 V at least once during this procedure. The voltage should be below 0.27 V at least once during this procedure.
	41

Is the inspection result normal?

YES

INSPECTION END

GO TO 5.

CHECK HEATED OXYGEN SENSOR 2-III

Check the voltage between ECM harness connector terminals under the following conditions.

ECM			Condition	Voltage
Connector	+	-
	Terminal
F13	32	35	Coasting from 80 km/h (50 MPH) with selector lever in the D position	The voltage should be above 0.72 V at least once during this procedure. The voltage should be below 0.27 V at least once during this procedure.
	41

Is the inspection result normal?

YES

INSPECTION END

Replace malfunctioning heated oxygen sensor 2. Refer to Removal and Installation (bank 2) , Removal and Installation (bank 1) .