Golf GLS L4-2.0L (AVH) (2002)
Checking idling speed
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Change to display group 56 as follows:
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Press C key.
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Press keys 0, 5 and 6 for "Display group number 56" and confirm entry with Q key.
Indicated on display: (1 to 4 = Display zones)
System in basic setting 56
->
1
2
3
4
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Check the operating mode in display zone 4
Specification: 0x000
(Significance) See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With
Manufacturer's Scan Tool/Read Measuring Value Blocks (Function 08)/Evaluating Measuring Value Blocks/Display Groups 50-69 (Speed / RPM
Regulation)
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Check the specified idling speed in display zone 2.
Specification:
Manual transmission 780 RPM
Automatic transmission 790 to 890 RPM
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Check idling speed in display zone 1.
Specification: 730 to 890 RPM
NOTE: During idling check the EVAP canister purge regulator valve and the air conditioner are switched off and the Oxygen sensor control learning
procedure is initiated.
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Press -> key.
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Press keys 0 and 6 for the "End data transfer" function and confirm input with the Q key.
If the idling speed is not obtained:
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Adapt the engine control module to the throttle valve control module. See: Powertrain Management/Computers and Control Systems/Testing and
Inspection/Component Tests and General Diagnostics/Engine Control Module (ECM), Adapting to Throttle Valve Control Module
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Test drive vehicle.
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Again check the control module DTC memory.
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Repeat the idling check.
If the specifications are not obtained again:
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Check throttle valve control part. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests and
General Diagnostics/Throttle Valve Control Module, Checking
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Check the operating condition of engine. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component Tests
and General Diagnostics/Engine Operating Conditions, Checking
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Check the intake air system for unmetered air. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Component
Tests and General Diagnostics/Intake Air System, Checking For Leaks (False/Unmetered Air)