Passat GLS Wagon L4-1.8L Turbo (AUG) (2001)
Vehicle Speed Sensor: Testing and Inspection
Speed signal, checking
Special tools and equipment
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V.A.G 1551 scan tool (or VAG1552 mobile scan tool) with VAG 1551/3B cable
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VAG 1598/31 adapter cable
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VAG 1526 multimeter or VAG 1715 multimeter
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VAG 1594 connector test kit
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Wiring diagram
Test requirements
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Battery voltage must be at least 11.5 volts.
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Speedometer must be OK. Checking speedometer.
Test sequence
NOTE: To test speed signal, vehicle must be driven. Doing this requires a second person.
WARNING!
Secure Scan Tool (ST) on the rear seat and have operated from there by second technician.
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Connect V.A.G 1551 scan tool (VAG 1552). Start engine and select the Engine Control Module (ECM) using address word 01.(connecting scan
tool and selecting ECM). Refer to "Scan Tool Testing/Scan Tool Connecting and Initial Checks/Connecting VAG 1551 Scan Tool", See: Testing
and Inspection
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. Press - Q- button to confirm input.
Indicated on display:
Read measuring value block
HELP
Enter display group number XXX
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Press buttons -0-, -0- and -5- to select "Display group number 5". Press -Q- button to confirm input.
Indicated on display: (1 to 4 = display fields)
Read measuring value block 5
->
1
2
3
4
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Perform a road test, and have the 2nd person observe the indication on the display.
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Read value indicated in display field 3. Specification: approx. vehicle speed
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Press -> button.
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Press buttons -0- and -6- to select "End Output" function 06. Press -Q- button to confirm input.
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Switch ignition off.
If no speed is indicated: