Golf GL L4-2.0L (AZG) (2001)
Brake Light Switch: Testing and Inspection
Signal From Brake Light Switch and Brake Pedal Switch, Checking
Special tools and equipment
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V.A.G 1551 scan tool or 1552 scan tool with cable VAG 1551/3
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Test box VAG 1598/31
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Hand multimeter VAG 1526 or multimeter VAG 1715
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Adapter set VAG 1594
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Wiring diagram
Check conditions
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All fuses must be OK.
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The battery voltage must be at least 11.5 V.
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All electrical consumers, e.g. lights and rear window heating must be switched off
Test sequence
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Connect the V.A.G 1551 scan tool ((VAG 1552). Then switch ignition on and select engine control module with the "Address word" 01.
(Connecting scan tool and selecting engine control module.). Refer to "Scan Tool Connecting Testing/Test Requirements and Work
Procedures/VAG 1551 Scan Tool" See: Powertrain Management/Computers and Control Systems/Testing and Inspection
Indicated on display:
Rapid data transfer
HELP
Select function XX
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Press keys 0 and 8 for the function "Read measuring value block" and confirm entry with Q key.
Indicated on display:
Read measuring value block
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 measuring value block 66
->
1
2
3
4
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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
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Press the -> key.
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Press keys 0 and 6 for the "End output" function and confirm input with the Q key.