Touareg V8-4.2L (BAR) (2007)
Specified value: battery voltage.
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Switch the ignition off.
If the specified value was not obtained:
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Check the Ignition Coil electrical harness connector terminal 1 to the Motronic Engine Control Module (ECM) Power Supply Relay (J271)
terminal 87 for an open circuit.
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, loose 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, N325, N326) 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.