Component Inspection

1.INSPECTION START

Do you have M.U.T.-III SE?

2.CHECK HEATED OXYGEN SENSOR 2

With M.U.T.-III SE

Turn ignition switch ON and select “DATA MONITOR” mode of “ENGINE” using M.U.T.-III SE.
Start engine and warm it up to 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 "Actuator Test" (in "Special Function") mode of "ENGINE" using M.U.T.-III SE, and select "HO2S2 (B1)” as the monitor item with M.U.T.-III SE.
Check “HO2S2 (B1)” at idle speed when adjusting “FUEL INJECTION” to ± 25%.
“HO2S2 (B1)” should be above 0.71 V at least once when the “FUEL INJECTION” is + 25%.
“HO2S2 (B1)” should be below 0.18 V at least once when the “FUEL INJECTION” is − 25%.

Is the inspection result normal?

INSPECTION END

3.CHECK HEATED OXYGEN SENSOR 2-1

Without M.U.T.-III SE

Start engine and warm it up to 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 and ground as per the following condition.

ECM			Condition	Voltage
Connector	+	−
Connector	Terminal
F52	92	97	Revving up to 4,000 rpm under no load at least 10 times	The voltage should be above 0.71 V at least once during this procedure. The voltage should be below 0.18 V at least once during this procedure.

Is the inspection result normal?

INSPECTION END

4.CHECK HEATED OXYGEN SENSOR 2-2

Check the voltage between ECM harness connector and ground as per the following condition.

ECM			Condition	Voltage
Connector	+	−
Connector	Terminal
F52	92	97	Keeping engine speed at idle for 10 minutes	The voltage should be above 0.71 V at least once during this procedure. The voltage should be below 0.18 V at least once during this procedure.

Is the inspection result normal?

INSPECTION END

5.CHECK HEATED OXYGEN SENSOR 2-3

Check the voltage between ECM harness connector and ground as per the following condition.

ECM			Condition	Voltage
Connector	+	−
Connector	Terminal
F52	92	97	Coasting from 80 km/h (50 MPH) in D position	The voltage should be above 0.71 V at least once during this procedure. The voltage should be below 0.18 V at least once during this procedure.

Is the inspection result normal?

INSPECTION END

6.REPLACE HEATED OXYGEN SENSOR 2

Replace heated oxygen sensor 2. Refer to Exploded View

caution

Discard any sensor which has been dropped from a height of more than 0.5 m (19.7 in) onto a hard surface such as a concrete floor; use a new one.
Before installing new sensor, clean exhaust system threads using Oxygen Sensor Thread Cleaner [commercial service tool (J-43897-18 or J43897-12)] and approved Anti-seize Lubricant (commercial service tool).

: INSPECTION END