audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Camshaft Adjustment Valves and Camshaft Adjustment Valves, Exhaust, Checking|Page 2439 > < Camshaft Adjustment Valves and Camshaft Adjustment Valves, Exhaust, Checking|Page 2437
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Using a Multimeter, check the Camshaft Adjustment Valve, for resistance.

Specified value: 5.0 to 8.0 ohms (at approx. 20° C)

If the specified value was not obtained:

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Replace the Camshaft Adjustment Valve.

If the specified value was obtained:

Checking voltage

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Switch the ignition on.

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Using a Multimeter, Check the Camshaft Adjustment Valve electrical harness connector terminal to the Motronic Engine Control Module (ECM)
Power Supply Relay (J271) terminal 2/87 for voltage.

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Switch the ignition off.

Specified value: battery voltage.

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 value was obtained:

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 Motronic Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Replacing ] See: Powertrain
Management/Computers and Control Systems/Engine Control Module/Service and Repair/Engine Control Module, Replacing.

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Using a Multimeter, Check the Camshaft Adjustment Valve electrical harness connector terminal 1 to the Motronic Engine Control Module
(ECM) electrical harness connector for an open circuit.

Camshaft Adjustment Valves and Camshaft Adjustment Valves, Exhaust, Checking|Page 2439 > < Camshaft Adjustment Valves and Camshaft Adjustment Valves, Exhaust, Checking|Page 2437