A5 Quattro Coupe V6-3.2L (CALA) (2009)
Ignition Coil: Testing and Inspection
Diagnostic Procedures
Ignition Coil with Power Output Stage, Checking
Observe all safety precautions: => [ Safety Precautions ] See: Computers and Control Systems/Service Precautions/Safety Precautions
View clean working conditions: => [ Clean Working Conditions ] See: Computers and Control Systems/Service Precautions/Clean Working
Conditions
Use only gold-plated terminals when servicing any component with gold-plated electrical harness connector terminals.
For wiring diagrams, component locations, and connector views, Refer to the applicable wiring diagram.
Special tools, testers and auxiliary items required
‹› multimeter.
‹› Diode test lamp.
‹› Wiring diagram.
Test requirements
‹› The Ignition Coils with Power Output Stage (N70, N127, N291, N292, N323, N324) fuses OK.
‹› The Motronic Engine Control Module (ECM) Power Supply Relay (J271) OK.
‹› The Engine Speed (RPM) Sensor (G28) OK.
‹› The Camshaft Position (CMP) Sensor (G40)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