Touareg V6-3.2L (BMX) (2005)
Vehicle Speed Sensor: Testing and Inspection
Diagnostic Procedures
Speed Signal, Checking
Special tools, testers and auxiliary items required
‹› Multimeter (VAG1526) or Multimeter (VAG1715)
‹› Connector test kit (VAG1594)
‹› Wiring diagram
Test requirements
‹› Fuses in E-box (plenum chamber, left) must be OK:
‹› Motronic Engine Control Module (ECM) Power Supply Relay (J271) must be OK, check:
‹› Motronic Engine Control Module (ECM) Power Supply Relay 2 (J670) must be OK, check:
‹› Control module with indicator unit in instrument panel insert (J285) must be OK.
‹› Battery voltage must be at least 11.5 volts.
Function test
‹› To check the speed signal, vehicle must be driven at a speed above 5 km/h.
Observe safety precautions that apply to road tests.
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Connect diagnostic tester.
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Start engine and let run at idle.
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Under address word 33, select "Diagnostic mode 1: Checking measured values."
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Select the measuring value "PID 13: Vehicle speed".
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Perform a road test at a speed above 5 km/h while a 2nd person observes the indication on the display.
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Check specified value of the vehicle speed: