TT Quattro Coupe V6-3.2L (CBRA) (2008)
Specified value: 12.5. battery voltage.
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Switch the ignition off.
If the specified value was not obtained:
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Check the Engine Control Module (ECM) (J623) electrical harness connector terminal T81/28 to the Voltage Regulator (VR) (C1) terminal DF for
an open circuit or a short to Ground (GND).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
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Switch the ignition on.
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Using a Multimeter, check the following wiring connection for voltage.
Specified value: 12.5 V
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Switch the ignition off.
If the specified value was not obtained:
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Check the Engine Control Module (ECM) (J623) electrical harness connector terminal T81/21 to Battery (A) (+) connection 1 for an open circuit
or short to Ground (GND).
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Check the electrical harness connectors for damage, corrosion, loose or broken terminals.
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If necessary, repair the wiring connection.
If no malfunctions are found in the wiring:
Checking Ground (GND)
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Using a Multimeter, check the following wiring connections for resistance.
Specified value: 1.5 ohms.
If any of the specified values are not obtained:
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Check the Engine Control Module (ECM) (J623) electrical harness connector terminals to the following Ground (GND) locations for an open
circuit or a short to Battery (+).
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Check the electrical harness connector for damage, corrosion, loose or broken terminals.