Quote:
Originally Posted by scottfab
This is almost true but not quite. Yes the ECM will do a test of the ESC module once after start but these two conditions must also be present:
1. Eng temp above 194deg F.
2. at or near WOT (high load)
So, based on this circuit description it is entirely possible to not get a code 43 when the sensor is unplugged.
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Thanks for clarifying the fine print Scott
So..... if you drive like a granny (I can assume LGAFF does not qualify on this count), OR you've changed your thermostat and/or fan cut-in - you won't get a DTC?
I dunno - I have early activation of my fans and I still see temps > 200. Sounds like I need to disconnect the sensor and see what happens.