A4 Quattro Wagon V6-3.2L (BKH) (2005)
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Using a diode test lamp, check the Ignition Coil electrical harness connector terminals 2 to 3 for voltage.
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Operate the starter.
The LED should flicker.
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Switch the ignition off.
If the LED flickers and the voltage was OK:
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Replace the faulty Ignition Coils with Power Output Stage N70, N127, N291, N292.
If the LED does not flicker:
Checking wiring
If the manufacturers test box is being used. Perform the following step.
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Install the test box.
If the manufacturers test box is not being used. Perform the following step.
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Remove the Engine Control Module (ECM) J623.
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Using a Multimeter, Check the Ignition Coil electrical harness connector to the Engine Control Module (ECM) J623 electrical harness connector
T60 for an open circuit.
Ignition Coils with Power
Engine Control Module
Output Stage electrical harness
(ECM) electrical harness
connector terminal
connector T60 terminal or test box socket
N70 3
8
N127 3
6
N291 3
7
N292 3
23
N323 3
21
N324 3
22
Specified value: 1.5 Ohms Max.
If the specified value was not obtained:
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Check the wiring connection for an open circuit, short circuit to Battery (+) or Ground (GND).
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Check the wiring connection for damage, corrosion, lose or broken terminals.
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If necessary, repair the faulty wiring connection.
If the specified values were obtained: