Overall Function Check

WARNING: This page is about a different car, the 2004 Infiniti G35. However, it is still accessible from the selected car via links, so may be relevant.

Use this procedure to check the overall function of the heated oxygen sensor 1 circuit. During this check, a 1st trip DTC might not be confirmed.

WITH GST

Start engine and warm it up to normal operating temperature.
Set voltmeter probes between ECM terminal 35 [HO2S1(B1) signal] or 16 [HO2S1(B2) signal] and ground.
Check the following with engine speed held at 2,000 rpm constant under no load.
The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V more than 5 times within 10 seconds.
1. 1 time: 0 - 0.3V --> 0.6 - 1.0V --> 0 - 0.3V
2. 2 0 - 0.3V --> 0.6 - 1.0V --> 0 - 0.3V --> 0.6 - 1.0V times: --> 0.03V
If NG, go to "Diagnostic Procedure ".

Fig 1: Overall Function Check With GST
Courtesy of NISSAN MOTOR CO., U.S.A.