Golf GLS L4-2.0L (AEG) (2001)
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VAG1598/22 test box
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Multimeter (Fluke 83 or equivalent)
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VW1594 adapter set
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Wiring diagram
Test requirements
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Fuses 10 and 29 OK
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Battery (B+) voltage at least 11.5 V
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Turn off all electrical consumers (e.g. lights and window defroster)
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Turn off A/C
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Automatic transmission selector lever in P (Park) or N (Neutral) position
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Generator OK
Test sequence
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Connect V.A.G1551 (VAG1552) Scan Tool (ST). Refer to Scan Tool Testing See: Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting
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Turn on ignition and press buttons -0- and -1- to insert "Engine Electronics" address word 01. Engine must be running at idle when performing this
step.
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press buttons -0- and -8- to select "Read Measuring Value Block" function 08 and press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
Input display group number XXX
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Press buttons -0-, -0- and -4- to input display group number 4 (004) and press -Q- button to confirm input.
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06 and press -Q- button to confirm input.
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Turn off ignition.
Indicated on display: (1-4 = display fields)
Read Measuring Value Block
->
1
2
3
4
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Read off supply voltage for Engine Control Module (ECM) in display field 2.