R8 Quattro Coupe V10-5.2L (BUJ) (2010)
Knock Sensor: Testing and Inspection
Knock Sensor 2, Checking
Knock Sensor 2, Checking
The following procedure is used to diagnose Knock Sensor (KS) 2 (G66) which is controlled by Motronic Engine Control Module (ECM) (J623).
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Wiring diagram.
Test requirements
‹› The mounting bolt of Knock Sensor (KS) 2 (G66) tightened to 20 Nm.
‹› The Motronic Engine Control Module (ECM) (J623) fuses OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Ignition switched off.
Test Procedure
-
Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check
-
Remove the front engine cover - 1 -.