New Beetle L4-1.8L Turbo (AWP) (2003)
Brake Light Switch: Testing and Inspection
Signal From Brake Light Switch -F- And Brake Vacuum Vent Valve Switch -F47-, Checking
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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All fuses must be OK
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Battery voltage must be at least 11.5 V
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Brake lights functioning OK
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All electrical accessories, e.g. lights and rear window defroster must be switched off
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Selector lever must be in position "P" or "N" on vehicles with an automatic transmission
Test sequence
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Connect VAG 1551 scan tool ((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-.
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
HELP
Input display group number XXX
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Press buttons -0-, -6- and -6- for "display group 66" and confirm with -Q- button.
Indicated on display (1 to 4 = Display zones)
Read measuring value block 66
->
1
2
3
4
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Observe display in display zone 2: (1st and 2nd positions from right) Brake pedal not depressed:
Specification: x x x x x x 0 0
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Depress brake pedal fully and observe display in display zone 2.