2019 Infiniti M35 V6-3.5L (VQ35HR) Diagnostic and Repair Information Page 338
Component Inspection
1.INSPECTION START
Will CONSULT-III be used?
Will CONSULT-III be used?
YES - GO TO 2.
NO - GO TO 3.
2.CHECK HEATED OXYGEN SENSOR 2 (HO2S2)
With CONSULT-III
1. Turn ignition switch ON and select "DATA MONITOR" mode with CONSULT-III.
2. Start engine and warm it up to the normal operating temperature.
3. Turn ignition switch OFF and wait at least 10 seconds.
4. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
5. Let engine idle for 1 minute.
6. Select "FUEL INJECTION" in "ACTIVE TEST" mode, and select "HO2S2 (B1)/(B2)" as the monitor item with CONSULT-III.
7. Check "HO2S2 (B1)/(B2)" at idle speed when adjusting "FUEL INJECTION" to ?5%.
"HO2S2 (B1)/(B2)" should be above 0.70 V at least once when the "FUEL INJECTION" is +25%.
"HO2S2 (B1)/(B2)" should be below 0.18 V at least once when the "FUEL INJECTION" is -25%.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 6.
3.CHECK HEATED OXYGEN SENSOR 2-I
Without CONSULT-III
1. Start engine and warm it up to the normal operating temperature.
2. Turn ignition switch OFF and wait at least 10 seconds.
3. Start engine and keep the engine speed between 3,500 and 4,000 rpm for at least 1 minute under no load.
4. Let engine idle for 1 minute.
5. Check the voltage between ECM harness connector terminals under the following condition.
Is the inspection result normal?
YES - INSPECTION END
NO - GO TO 4.
4.CHECK HEATED OXYGEN SENSOR 2-II
