TT Quattro Roadster V6-3.2L (BHE) (2005)
Variable Induction Control Valve: Testing and Inspection
Intake Manifold Tuning Valve, Checking
Special tools, testers and auxiliary items required
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Multimeter.
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Wiring diagram.
Test requirements
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Fuse SB7 OK.
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The Motronic Engine Control Module (ECM) Power Supply Relay J271 OK.
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The parking brake engaged.
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The battery voltage at least 12.5 V.
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The selector lever of automatic transmission in position "P" or "N".
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All electrical consumers switched off (radiator fan must NOT run during test).
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A/C switched off.
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The fuel tank at least 1/ 4 filled.
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The ignition switched off.
Test procedure
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Perform a preliminary check to verify the customers complaint. See: Computers and Control Systems/Testing and Inspection/Scan Tool Testing
and Procedures/General Diagnosis
Start diagnosis
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Disconnect the Intake Manifold Runner Control (IMRC) Valve N316 electrical harness connector - arrow -.
Checking internal resistance
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Using a Multimeter, check the Intake Manifold Tuning (IMT) Valve N156 terminals 1 to 2 for resistance.
Specified value: 450 to 1000 Ohms.
If the specified value was not obtained:
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Replace the Intake Manifold Tuning (IMT) Valve N156.
If the specified value was obtained:
Checking voltage