With Manufacturer's Scan Tool

Additional signals, checking

Engine Speed (RPM) signal, checking

NOTE: The signal is generated by Engine Speed (RPM) Sensor -G28 and processed by the engine control module.

To obtain engine speed, proceed as follows:
- Connect Vehicle Diagnostic, Testing and Information System VAS5051 or VAG 1551 Scan Tool and select engine electronics control module by entering address word "01". When doing this the ignition must be switched on.

Indicated on display

Rapid data transfer HELP
Enter address word XX

- Check all control modules for a missing RPM signal via the "Automatic Test sequence."

- Press -0- button twice to select "Automatic Test Sequence" function and confirm entry by pressing -Q- button.

No malfunctions relating to a missing "Engine Speed (RPM) signal" should be stored in any of the control modules.

If one of the control modules indicates a malfunction:
- Check for open circuit or short circuit between engine control module and the control module concerned.

- Display readiness code, Readiness Code Reading. Readiness code must be generated if DTC memory was erased, Readiness Code, Generating