With Manufacturer's Scan Tool

Engine Speed (RPM) Signal, Checking

Special tools and equipment







- VAG1526A
- VAG1527B
- VAG1594A
- VAG1598/31
- VAS5051 with VAG5051/1

NOTE: The signal is generated from terminal 37 of the ECM. The engine speed signal is displayed on the tachometer in the instrument cluster.

- Connect test box V.A.G 1598/31 to wiring harness for Engine Control Module (ECM); do not connect Engine Control Module (ECM). Electrical Testing Using VAG1598/31 Test Box
- Check for open circuit and short to positive (B+) or ground (GND) in following wiring connections:

Test box V.A.G 1598/31 Instrument cluster:
Socket terminal
37

- Repair any open/short circuit as needed.