New Beetle GLS L4-1.8L Turbo (AWV) (2001)
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Systematically spray parts of intake system with engine leak detector spray.
If the engine speed drops or the oxygen sensor control changes:
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Press -> button.
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Press buttons -0- and -6- for function "End output" and confirm entry with -Q- button.
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Switch off ignition.
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Check sprayed areas of intake system for leaks and repair if necessary.
If the engine speed and the oxygen sensor control do not change:
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Press -> button.
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Press buttons -0- and -6- for function "End output" and confirm entry with -Q- button.
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Switch off ignition.
With Generic Scan Tool
Intake System For Leaks (false Air), Checking
Checking with engine leak detection spray
Recommended special tools and equipment
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Engine leak detection spray G 001 800 A1
Test requirement
Coolant temperature must be at least 80 degrees C, Diagnostic mode 1: Check measuring values; PID 5, Coolant temperature. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/Read Measuring Value Blocks (Function
08)/With Generic Scan Tool/Diagnostic Mode 1: Check Measured Values
Test sequence
NOTE:
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The negative pressure in the intake system sucks in the leak detection spray with the false air. Leak detection spray decreases ignition quality of the
fuel mixture. This causes a drop in engine speed and changes the value produced by the Heated Oxygen Sensor (HO2S).
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It is absolutely necessary to follow the safety precautions listed on the can.
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Connect diagnostic tester. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/With Generic Scan Tool/Diagnostic Tester, Connecting
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Start engine and let run at idle.
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Under address word 33, select "Diagnostic mode 1: Checking measured values."
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Select the following measured values and check the specified values at idle.
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Select the following measured values:
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PID 06: Short time gasoline-air ratio bank 1
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PID 12: Engine rotations per minute (RPM)
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Observe the short time gasoline-air ratio bank 1 and the engine speed.
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Spray intake system parts with engine leak detection spray in a systematic manner.