Passat Sedan L4-2.0L Turbo (BPY) (2007)
Ignition Coil: Testing and Inspection
Ignition Coils with Power Output Stage, Checking
The following procedure is used to diagnose Ignition Coils with Power Output Stage (N70, N127, N291, N292).
Special tools, testers and auxiliary items required
‹› Multimeter.
‹› Diode test lamp.
‹› Wiring diagram.
Test requirements
‹› Fuse (SB6) 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
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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check.
Start diagnosis
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Remove the engine cover with air filter.
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Remove the Ignition Coils electrical harness screws - 1 -.