Beetle L4-1781cc 1.8L Turbo (APH) (1999)
Clutch Switch: Testing and Inspection
Clutch Pedal Switch, Checking
Signal From Clutch Pedal Switch, Checking
Special tools, test equipment and auxiliary items
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Scan tool V.A.G 1551 or vehicle system tester V.A.G 1552 with cable V.A.G 1551/3B
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Test box V.A.G 1598/31
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Multimeter (Fluke 83 or equivalent)
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Adapter set V.A.G 1594
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Wiring diagram
Test conditions
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Fuses 5,10 and 29 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 scan tool V.A.G 1551 (V.A.G 1552). Then switch ignition on and select engine control module with the "Address word" 01.
Connecting scan tool and selecting Engine Control Module (ECM). Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/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 (1-4 = Display zones)
Read measuring value block 66
->
1
2
3
4
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Observe display in display zone 2 (2nd digit from left).
Specification: x 0 x x
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Depress clutch pedal fully and observe display in display zone 2.
Specification: x 1 x x