New Beetle GLS L4-1.8L Turbo (AWV) (2001)
Electronic Throttle Control Module: Testing and Inspection
With Manufacturer's Scan Tool
Throttle Valve Control Module -J338-, Checking
Components of Throttle Valve Control Module -J338-: Throttle valve drive -G186-, Angle sensor 1 for throttle valve drive -G187- and Angle sensor 2
for throttle valve drive -G188-.
NOTE:
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If the Throttle Valve Control Module -J338- is replaced, the new control module must be adapted to the Motronic Engine Control Module (ECM)
-J220-.
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On vehicles with an automatic transmission, the transmission control module must also be adapted.
Special tools, test equipment and auxiliary items
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VAG 1551 scan tool or VAG 1552 mobile scan tool with VAG 1551/3B cable
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VAG 1598/31 test box
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VAG 1526 hand multimeter or VAG 1715 multimeter
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VAG 1594 adapter set
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Electrical Wiring Diagram
Test conditions
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Engine not running, ignition switch on
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Throttle valve not damaged or dirty
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On vehicles with automatic transmission selector lever in "P" or "N" position
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Engine Coolant Temperature (ECT) must be at least 80 °C, see display group 04, display zone 3
NOTE: Only gold-plated terminals can be used to repair the terminals in the connector for the Throttle Valve Control Module -J338-.
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Connect VAG 1551 scan tool (or VAG 1552). Switch ignition on and select Motronic Engine Control Module (ECM) -J220- with "Address word"
01. Connecting scan tool and selecting Motronic Engine Control Module (ECM) -J220-. See: Testing and Inspection/Reading and Clearing
Diagnostic Trouble Codes/Scan Tool Connecting/With Manufacturer's Scan Tool/Connecting VAG 1551 Scan Tool
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press buttons -0- and -8- for function "Read measuring value block" and confirm entry with -Q- button.
Indicated on display
Read measuring value block
Input display group number XXX
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Press buttons -0-, -6- and -2- for "Display group number 62" and confirm entry with -Q- button.
Indicated on display (1 to 4 = Display zones)
Read measuring value block 62
->
1
2
3
4
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Check throttle valve angle at idling stop from Throttle valve angle sensor 1 -G187- in display zone 1:
Specification: 10 to 88 %
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Check throttle valve at idling stop from Throttle valve angle sensor 2 -G188- in display zone 2:
Specification: 89 to 11 %