M103 -- O2 sensor and X11 pin 3 relationship
What's the relationship between the O2 sensor reading and the reading at pin 3 of the X11 diagnostic port?
I've seen the O2 sensor reading oscillate in a range between 0-1V as it should and read that the voltage at pin 3 should be somewhere between 6.8-7.2V. What happens in between? Thanks, Sixto 91 300SE 87 300SDL |
Sixto:
I'm a diyer, so take this for what's it's worth: Regarding your first question...the relationship. The 2 sec. vascillation of voltage on the O2 sensor between .2v and .9v and the 6.6v - 7.2v reading on pin 3(50 per cent duty cycle) to me are somewhat synonymous. Not sure I understand the tail end of your 2nd question. The final post in the following thread might be of interest if you're trouble-shooting a mixture control issue. http://www.peachparts.com/shopforum/tech-help/7232-o2-sensor-failure-lambda-testing.html |
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