With GST
- Start engine and warm it up to normal operating temperature.
- Set voltmeter probes between ECM terminal 35 (HO2S1 bank 1 signal) or 16 (HO2S1 bank 2 signal) and engine 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 time: 0 - 0.3V --> 0.6 - 1.0V --> 0 - 0.3V
2 times: 0 - 0.3V --> 0.6 - 1.0V --> 0 - 0.3V --> 0.6 - 1.0V --> 0 - 0.3V
- The voltage fluctuates between 0 to 0.3V and 0.6 to 1.0V more than 5 times within 10 seconds.
- If NG, go to "DIAGNOSTIC PROCEDURE " .