Jetta GLS L4-1.8L Turbo (AWP) (2002)
Brake Light Switch: Testing and Inspection
Special tools equipment
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V.A.G 1551 Scan Tool or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3
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Test box V.A.G 1598/31
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Hand multimeter V.A.G 1526 or multimeter V.A.G 1715
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Adapter set V.A.G 1594
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Wiring diagram
Check 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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All electrical consumers, e.g. lights and rear window defroster must be switched off
Test sequence
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Connect V.A.G 1551 Scan Tool ((V.A.G 1552). Switch ignition on and select engine control module with "Address word" 01. (Connecting scan
tool and selecting engine control module). Refer to "VAG1551 Scan Tool See: Powertrain Management/Computers and Control Systems/Tools
and Equipment
Indicated on display
Rapid data transfer
HELP
Select function XX
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Press keys 0 and 8 for function "Read measured value block" and confirm entry with Q key.
Indicated on display
Read measured value block
HELP
Input display group number XXX
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Press keys 0, 6 and 6 for "display group 66" and confirm with Q key.
Indicated on display
Read measured value block 66
->
1
2
3
4
Only engine code AWP
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Observe display in display zone 2: (1st and 2nd positions from right) Specification: x x x x x x 0 0
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Depress brake pedal fully and observe display in display zone 2. Specification: x x x x x x 1 1
Only engine code AWW
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Observe display in display zone 2: (3rd and 4th positions from left) Specification: x x 0 0
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Depress brake pedal fully and observe display in display zone 2. Specification: x x 1 1