Q7 Quattro V6-3.6L (BHK) (2007)
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:
Checking activation
CAUTION!
Do not touch the Ignition Coils connecting parts or adapter cables during the following test.
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Disable the power supply to the Fuel Injectors (N70, N127, N291, N292, N323, N324) by removing Fuse 29 (on fuse panel B) from the fuse
holder SB29, in the E-box, plenum chamber.
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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, N323, N324).
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). Refer to => [ Engine Control Module, Replacing ] See: Computers and Control
Systems/Engine Control Module/Service and Repair/Engine Control Module, Replacing.
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Using a Multimeter, Check the Ignition Coil electrical harness connector to the Engine Control Module (ECM) (J623) electrical harness connector