Jetta L4-2.0L (AEG) (2000)
Vehicle Speed Sensor: Testing and Inspection
With Manufacturer's Scan Tool
Vehicle Speed Signal, Checking
Special tools and equipment
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V.A.G1551 Scan Tool (ST) or VAG1552 mobile scan tool with VAG1551/3 adapter cable
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VAG1598/22 test box
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Multimeter (Fluke 83 or equivalent)
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VW1594 adapter set
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Wiring diagram
Test requirements
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Battery (B+) voltage at least 11.5 V
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Speedometer OK
Test sequence
NOTE: You must drive the vehicle in order to check the speed signal. This requires a second person.
WARNING! Secure scan tool to rear seat and operate from this position.
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Connect V.A.G1551 (VAG1552) Scan Tool (ST). See: Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting
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Turn on ignition and press buttons -0- and -1- to insert "Engine Electronics" address word 01.
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 and press -Q- button to confirm input.
Indicated on display
Read Measuring Value Block
Input display group number XXX
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Press buttons -0-, -0- and -5- to input display group number 5 (005) and press -Q- button to confirm input.
Indicated on display: (1-4 = display fields)
Read Measuring Value Block 5
->
1
2
3
4
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Carry out test drive with 2nd person to observe display.
Observe safety precautions when performing road test. See: Fuel Delivery and Air Induction/Service Precautions/Technician Safety Information
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Observe figure displayed in display field 3:
Specified value: approx. driven speed