Nissan 370Z Forum - View Single Post - Throttle Actuators on engine shutdown: self-check?

ByThaBay · 02-15-2013, 03:49 AM

You are probably hearing the "Spring Test." During this test the ECM operates the throttle to check if it can react to the command and return to the default (home) position. This self-test is used by the ECM to determine that the spring and motor inside the throttlebody are working correctly.

02-15-2013, 03:49 AM	#3 (permalink)
ByThaBay Base Member Join Date: Aug 2011 Location: Bay Area, CA Posts: 239 Drives: 2015 370z Rep Power: 10080	You are probably hearing the "Spring Test." During this test the ECM operates the throttle to check if it can react to the command and return to the default (home) position. This self-test is used by the ECM to determine that the spring and motor inside the throttlebody are working correctly.