Beetle L4-1781cc 1.8L Turbo (APH) (1999)
Ignition Coil: Testing and Inspection
With Manufacturer's Scan Tool
Ignition Coils With Power Output Stage, Checking
Special tools, test equipment and auxiliary items
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Test box VAG 1598/31
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Multimeter (Fluke 83 or equivalent)
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Diode test lamp V.A.G 1527
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Adapter set V.A.G 1594
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Wiring diagram
Check conditions
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Fuse 29 must be OK
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The battery voltage must be at least 11.5 V
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Camshaft Position (CMP) sensor must be OK, checking. See: Camshaft Position Sensor/Testing and Inspection
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Engine speed sender must be OK, checking. See: Computers and Control Systems/Engine Speed Sensor/Testing and Inspection
Test sequence
NOTE: Ignition coils and final power output stages are one component and cannot be replaced individually.
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Pull 4 pin connector -1- off power output stage for ignition coils (arrow).
Checking voltage supply