DTC Confirmation Test (Using Generic Scan Tool)
WARNING: This page is about a different car, the 2003 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.
CAUTION:
DO NOT use ECM ground terminals when measuring voltage. Damage to ECM transistor may result. Use engine ground.
NOTE:
Use the following test to check overall function of HO2S1 sensor circuit. During this test, a DTC may not be confirmed.
NOTE:
If a DTC confirmation test has been previously performed, turn ignition off and wait at least 10 seconds before performing next DTC confirmation test.
- Start engine and warm to normal operating temperature.
- Measure voltage between engine ground and ECM harness connector F101 terminal No. 91 (bank 1) or terminal No. 92 (bank 2) by backprobing.
- While observing voltmeter, increase engine speed to 2000 RPM under no load. Voltage should not remain in the range of 0.2-0.4 . If voltage is not as specified, go to DIAGNOSTIC PROCEDURE . If voltage is as specified, system is okay at this time.