Had an 2018 Buick Envision 2.0 With a code U1510, ECM lost communication with LIN bus . This would indicate that the ECM lost communication with the Active Air Shutter. Part of the diagnosis is to do a functional test of the Active Air Shutter. I did not find the test in the functional tests menu in the ECM. I would not think the test would be in any other module as the Shutter is connected to the ECM.
Missing functional Test
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Corrosion at the air shutter connector is an issue that I see often in some GM models.Comment
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I apologize, my bad. The 2018 Envision has a 2.5 not a 2.0, but it is still equipped with a front shutter that operates on the same principle. It doesn't make any difference if I enter the vehicle manually, no functional output test for the shutters. The vehicle was at a body shop when I looked at it earlier this week so my scanners were not connected any wifi. It seems that my Verus Edge did not save the vehicle in the history, not sure why, just had the screen shot of the functional tests that I saved. I found the session saved in my Apollo D9 with the VIN.Comment
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