New Beetle L4-1.8L Turbo (AWV) (2005)
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Vehicle Speed Sensor: Testing and Inspection
Speed Signal, Checking
Speed Signal, Checking
Recommended special tools and equipment
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VA.G 1526 multimeter or V.A.G 1715 multimeter
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V.A.G 1594 connector test kit
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Wiring diagram
Test requirements
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The respective fuses of Motronic Engine Control Module (ECM) -J220- must be OK:
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Battery voltage must be at least 11.5 volts.
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Speedometer -G21- must be OK.
Function test
NOTE: To check the speed signal, vehicle must be driven at a speed above 5 km/h.
Observe the safety precautions that apply to road tests.
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Connect diagnostic tester. See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic
Trouble Codes/Scan Tool Connecting/Diagnostic Tester, Connecting
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Start engine and let run at idle.
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Under address word 33, select "Diagnostic mode 1: Check 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:
NOTE: Vehicle speed must not drop to below 5 km/h during test.
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End diagnosis and switch ignition off.
If no speed is indicated:
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Check wires to control module according to wiring diagram.
Check wires to control module
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Connect test box to control module wiring harness. connect test box for wiring test. See: Powertrain Management/Computers and Control
Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Scan Tool Connecting/Test Box, Connecting For Wiring Test
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Remove instrument cluster.
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Check wire connection from Motronic Engine Control Module (ECM) -J220- to Speedometer -G21- according to wiring diagram.
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Erase DTC memory of Engine Control Module (ECM). Diagnostic mode 4: Reset/erase diagnostic data. See: Powertrain Management/Computers
and Control Systems/Testing and Inspection/Scan Tool Testing and Procedures/With Generic Scan Tool/Diagnostic Mode 4: Reset/Erase
