Touareg V10-5.0L DSL Turbo (BKW) (2004)
Engine Speed Sensor: Testing and Inspection
Diagnostic Procedures
Engine Speed Sensor, Checking
Function
The Engine Speed (RPM) Sensor (G28) detects engine speed and reference marks. Without an engine speed signal, the engine will not start. If the
engine speed signal fails while the engine is running, the engine will stop immediately.
Special tools, testers and auxiliary items required
‹› Multimeter (VAG1526) or Multimeter (VAG1715)
‹› Connector test kit (VAG1594)
‹› Wiring diagram
Test Prerequisites
‹› Fuses in E-box (plenum chamber, left) must be OK:
‹› Battery voltage must be at least 11.5 volts.
‹› Ground (GND) connections between engine and chassis must be OK.
‹› Ignition is switched off.
Test Sequence
-
Connect test box ((VAG1598/42)) to Engine Control Module (ECM) (J623) wiring harness using adapter cable ((VAG1598/39-1)) , connecting
test box for wiring test.
-
Measure resistance of sensor between sockets 43 + 58 of test box.
Specified value: 530 to 650 ohms
-
Check wires for short circuit to shielding between test box sockets.
Socket 57+43
Socket 57+58
Specified value: infinite ohms
If specified values are not obtained: