R32 4Motion V6-3.2L (CBRA) (2008)
Exhaust Pressure Regulator: Testing and Inspection
Exhaust Flap Valve 1 N321, Checking
Exhaust Flap Valve 1 N321, 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 SB35 OK.
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The Power Supply Relay (terminal 30, B+) J317 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: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Scan Tool Testing and Procedures/Preliminary Check
Start diagnosis
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Disconnect the Exhaust Flap Valve 1 N321 electrical harness connector.
Checking internal resistance
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Using a Multimeter, check the Exhaust Flap Valve 1 N321 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 Exhaust Flap Valve 1 N321. If the specified value was obtained:
Checking voltage
Crank the engine.