90S Quattro (Canada) V6-2.8L (AAH) (1993)
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Connect multimeter between terminal 1 of ignition coil harness connector and terminal 1 of power output stage harness connector.
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Specified value: 0.5-1.0 ohm for each coil
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Repeat test for corresponding connector terminals 2 and 3.
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Specified value must be obtained for all three measurements
If specified values are not obtained:
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Replace ignition coil.
CHECKING BATTERY POSITIVE VOLTAGE (B+) SUPPLY FOR IGNITION COILS
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Circuit breaker -S64- must be OK (yellow holder in electronics box, passenger side footwell)
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Disconnect white harness connector at connector holder (on engine bulkhead) Item 1B.
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Switch ignition on.
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Connect US 1115 LED tester or equivalent between Ground (GND) and all three terminals of connector in sequence.
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LED must light up each time
If LED does NOT light up:
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Check for open circuit using wiring diagram and repair as necessary.
