GTI V6-2.8L (BDF) (2002)
Engine Speed Sensor: Testing and Inspection
With Manufacturer's Scan Tool
Engine Speed (RPM) Sensor -G28-, Checking
Function
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, workshop equipment, testers, measuring instruments and auxiliary items required
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VAG 1526 Hand multimeter or VAG 1715 multimeter
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VAG 1594 Adapter set
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VAG 1598/31 test box
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Electrical Wiring Diagrams
Test sequence
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Separate grey 3-pin connector -arrow-to Engine Speed (RPM) Sensor.
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Measure sensor resistance between connector terminals 2 and 3 to sensor.
Specification: 480 to 1000 ohms
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Check sensor for short circuit between terminals 1 and 2 as well as 1 and 3.
Specification: infinity ohms
If the specifications are not obtained:
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Replace Engine Speed (RPM) Sensor -G28-, item 16.
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Check DTC memory, repair malfunctions if necessary and then erase 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 the DTC memory has been erased or the Motronic Engine Control Module (ECM) -J220- was disconnected from battery
positive (B+), the 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
If no sensor Diagnostic Trouble Code (DTC) is detected:
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Remove wiper arms and cowl panel: