Component Inspection
- INSPECTION START
Do you have CONSULT?
YES
GO TO 2.
NO
GO TO 3.
- CHECK HEATED OXYGEN SENSOR 2
With CONSULT
- Turn ignition switch ON.
- On CONSULT screen, select "ENGINE">>"Data Monitor".
- 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.
- On CONSULT screen, select "ENGINE">>"Active Test">>"FUEL INJECTION"
- Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to +/-25%.
"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
NO
Replace malfunctioning heated oxygen sensor 2. Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST .
- 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 condition.
ECM
Condition
Voltage
Connector
+
-
Terminal
F79
110
[HO2S2 (bank 1)]
99
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.
98
[HO2S2 (bank 2)]
Is the inspection result normal?
YES
INSPECTION END
NO
GO TO 4.
- CHECK HEATED OXYGEN SENSOR 2-II
Check the voltage between ECM harness connector terminals under the following condition.
ECM
Condition
Voltage
Connector
+
-
Terminal
F79
110
[HO2S2 (bank 1)]
99
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.
98
[HO2S2 (bank 2)]
Is the inspection result normal?
YES
INSPECTION END
NO
GO TO 5.
- CHECK HEATED OXYGEN SENSOR 2-III
Check the voltage between ECM harness connector terminals under the following condition.
ECM
Condition
Voltage
Connector
+
-
Terminal
F79
110
[HO2S2 (bank 1)]
99
Coasting from 80 km/h (50 MPH) in 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.
98
[HO2S2 (bank 2)]
Is the inspection result normal?
YES
INSPECTION END
NO
Replace malfunctioning heated oxygen sensor 2. Refer to EXHAUST MANIFOLD AND THREE WAY CATALYST .