Volkswagen Workshop Manuals
Eos (1F7) V6-3.2L (BUB) (2008)
Powertrain Management > Sensors and Switches - Powertrain Management > Sensors and Switches - Computers and Control Systems > Engine Speed Sensor > Component Information > Locations > Page 2575
Engine Speed Sensor: Testing and Inspection
Engine Speed Sensor G28, Checking
‹› Use only gold-plated terminals when servicing terminals in the electrical harness connector of the Engine Speed (RPM) Sensor (G28 ).
Special tools, testers and auxiliary items required
‹› Wiring diagram.
‹› The Engine Control Module (ECM) ( J623) fuses OK.
‹› Battery voltage at least 12.5 volts.
‹› All electrical consumers such as, lights and rear window defroster, switched off.
‹› Vehicles with automatic transmission, shift selector lever into position " P" or "N".
‹› A/C switched off.
‹› Ground (GND) connections between engine/transmission/chassis OK.
‹› Ignition switched off.
The Engine Speed (RPM) Sensor (G28) detects RPM and reference marks. Without an engine speed signal, the engine will not start. If the engine
Perform a preliminary check to verify the customers complaint. Refer to => [ Preliminary Check ] See: Computers and Control Systems/Testing
Connect the scan tool.
Switch the ignition on.
Using the scan tool, check the engine speed:
End diagnosis and switch ignition off.
If the specified value was not obtained:
Checking internal resistance
Disconnect the gray Engine Speed (RPM) Sensor ( G28) electrical harness connector - arrow -.
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