New Beetle L4-1.8L Turbo (AWP) (2003)
Engine Speed Sensor: Testing and Inspection
Engine Speed (RPM) Sensor, Checking
With Manufacturer's Scan Tool
Engine Speed (RPM) Sensor, Checking
The Engine Speed (RPM) Sensor -G28- is a speed and reference mark sensor. The engine will not start if there is no speed signal. If the speed signal fails
when the engine is running, it will cause the engine to stall immediately.
Special tools, test equipment and auxiliary items
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VAG 1551 scan tool or VAG 1552 mobile scan tool with VAG 1551/3B cable
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VAG 1598/31 test box
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VAG 1526 hand multimeter or VAG 1715 multimeter
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VAG 1594 adapter set
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Electrical Wiring Diagram
Test sequence
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Separate gray 3-pin connector -1- to Engine Speed (RPM) Sensor -G28-.
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Measure sensor resistance between terminals 2 + 3 of connector to sensor.
Specification: 730 to 1000 Ohms
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Check sensor for short between terminals 1 + 2 as well as 1 + 3.
Specification: Infinity Ohms
If the specifications are not obtained:
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Replace Engine Speed (RPM) Sensor -G28-, item 13.
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Check DTC Memory, if necessary, repair any malfunctions and then Erase DTC Memory, Checking and Erasing DTC Memory. See: Powertrain
Management/Computers and Control Systems/Testing and Inspection/Reading and Clearing Diagnostic Trouble Codes/Reading Diagnostic
Trouble Codes
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Read readiness code. If DTC memory has been erased or Motronic Engine Control Module (ECM) -J220- was disconnected from battery positive,
readiness code must be generated again.
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes
See: Powertrain Management/Computers and Control Systems/Testing and Inspection/Monitors, Trips, Drive Cycles and Readiness Codes