Beetle L4-2.0L (AEG) (2000)
Engine Speed Sensor: Testing and Inspection
With Manufacturer's Scan Tool
Engine Speed Sensor, Checking
The Engine Speed 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
-
VAG 1551/1552 Scan Tool using VAG 1551/3 Adaptor cable
-
VAG 1598/22 Test Box
-
Fluke 83 multimeter
-
VW 1594 Adaptor kit
-
Wiring diagram
Requirement
-
Battery Voltage must be 11.5 Volts minimum
Test sequence
-
Disconnect grey 3-pin harness connector from Engine Speed sensor -arrow-.
-
Measure sensor resistance between terminals 2 + 3 of connector -1-.
-
Specification: 480 to 1000 Ohms
-
Check sensor for short between terminals 1 + 2 and 1 + 3.
-
Specification: Infinity Ohms
If specifications not obtained
-
Replace Engine Speed sensor G28.
If sensor OK: