audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

Variable Valve Timing Actuator|Testing and Inspection|Page 4454 > < Variable Valve Timing Actuator|Testing and Inspection|Page 4452
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‹› Motronic Engine Control Module (ECM) Power Supply Relay (J271) OK.

‹› Battery voltage at least 12.5 volts.

‹› All electrical consumers such as, lights and rear window defroster, switched off.

‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".

‹› A/C switched off.

‹› Ground (GND) connections between engine/transmission/chassis OK.

‹› Ignition switched off.

Test procedure

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Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Testing and Inspection/Scan Tool Testing
and Procedures/Preliminary Check.

Start diagnosis

-

Disconnect the Camshaft Adjustment Valve 1 (exhaust) (N318) electrical harness connector - 2 -

Checking internal resistance

-

Using a Multimeter, check the Camshaft Adjustment Valve 1 (exhaust) (N318) terminals 1 to 2 for resistance.

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

Variable Valve Timing Actuator|Testing and Inspection|Page 4454 > < Variable Valve Timing Actuator|Testing and Inspection|Page 4452