Audi Q7: Fuel Supply - Gasoline Engines

 Knock Sensor 1 - G61-, Checking

General Description The Knock Sensor 1 -G61- is a tuned accelerometer on the engine which converts engine vibration to an electrical signal. The Engine Control Module -J623- uses this signal to determine the presence of engine knock and to retard spark timing, if necessary. Special tools and wor

 Current Draw Test

  WARNING Do not check or charge a Battery -A- when the visual indicator has "no color or is bright yellow". Jump starting must not be used! There is a risk of explosion during testing, charging or jump starting. These Batteries -A- must be replaced. Make sure the correct charging mode is