A8L Quattro Sedan V8-4.2L (BVJ) (2007)
/Page-2029005.png)
If the specified value was not obtained:
-
Replace Camshaft Adjustment Valve 1 (exhaust) (N318).
If the specified value was obtained:
Checking voltage
-
Switch the ignition on.
-
Using a Multimeter, Check the Camshaft Adjustment Valve 1 (exhaust) (N318) electrical harness connector terminal 2 to Ground (GND) for
voltage.
-
Switch the ignition off.
Specified value: battery voltage.
If the specified value was not obtained:
-
Check the wiring connection from the Camshaft Adjustment Valve 1 (exhaust) (N318) electrical harness connector terminal 2 to the Motronic
Engine Control Module (ECM) Power Supply Relay (J271) socket 2/87 for an open circuit, short circuit to Battery (+) or Ground (GND).
-
Check the wiring connection for damage, corrosion, lose or broken terminals.
-
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.
-
Install the test box.
If the manufacturers test box is not being used. Perform the following step.
-
Remove the Motronic Engine Control Module (ECM) (J623). Refer to => [ Engine Control Module, Removing and Installing ] See: Powertrain
Management/Computers and Control Systems/Engine Control Module/Service and Repair.
-
Using a Multimeter, check the Camshaft Adjustment Valve 1 (exhaust) (N318) electrical harness connector terminal 1 to the Motronic Engine
Control Module (ECM) (J623) electrical harness connector T60 for an open circuit.
