A5 Quattro Coupe V6-3.2L (CALA) (2009)
Variable Induction Control Valve: Testing and Inspection
Diagnostic Procedures
Intake Manifold Tuning Valve, Checking
Special tools, testers and auxiliary items required
‹› multimeter.
‹› Wiring diagram.
Test requirements
‹› Fuse (SB5) OK.
‹› The Secondary Air Injection (AIR) Pump Relay (J299) OK.
‹› The parking brake engaged.
‹› The battery voltage at least 12.5 V.
‹› The selector lever of automatic transmission in position "P" or " N".
‹› All electrical consumers switched off (radiator fan must NOT run during test).
‹› A/C switched off.
‹› The fuel tank at least 1/4 filled.
‹› The ignition switched off.
Test procedure
-
Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
and Inspection/Scan Tool Testing and Procedures/Preliminary Check.
Start diagnosis
-
Disconnect the Intake Manifold Tuning (IMT) Valve (N156) electrical harness connector - 1 -.
Checking internal resistance
-
Using a multimeter, check the Intake Manifold Tuning (IMT) Valve (N156) terminals 1 to 2 for resistance.