Speedometer Vehicle Speed Sensor (VSS) -G22-, Checking

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
- VW1594 Adaptor kit
- VAG 1527B Voltage tester
- Wiring diagram

Checking requirements

- Speedometer OK, checking:


NOTE: The vehicle must be driven to check the vehicle speed signal, and requires a second technician.


WARNING! Secure Scan Tool to rear seat and operate from this position using a second technician


Test sequence

- Connect VAG 1551/1552 Scan Tool. Scan Tool Testing and Procedures
- Start engine and let idle
- Press 0 and 1 buttons to select Address word 01: "Engine electronics"

Display will appear as shown


Rapid data transfer HELP
Select function XX


- Press 0 and 8 buttons to select Function 08: "Read measuring value block"
- Press 0 button to enter input

Display will appear as shown


Read measuring value block HELP
Input display group number XXX


- Press 0, 0 and 6 buttons to select "Display group 6"
- Press Q button to enter input
- Make a test drive and compare value in display 2 (2nd person required) using the tachometer indicator

Specification display zone 1: Approximately road speed.


Read measuring value block 6 ->
0 km/h 000 000000 255


- Press -> button.
- Press 0 and 6 buttons to select Function 06: "End output"
- Press Q button to enter input

If no speed is indicated:
- Connect VAG 1598/22 Test Box to ECM harness connector.







- Connect VAG 1527B Voltage tester between socket 1 (Ground) and socket 43 (road speed signal).
- Switch ON ignition and rotate drivers front wheel by hand.
- Diode test lamp must flash approximately four times per wheel revolution.


NOTE: If necessary, hold the right front wheel to prevent it from turning.

- If Voltage tester does not flash, check wiring for open/short circuit between ECM connector terminal 43 and instrument cluster.
See Wiring diagrams, Electrical Troubleshooting and Component locations.
- Display Readiness code. Monitors, Trips, Drive Cycles and Readiness Codes

If DTC memory has been erased
- Create Readiness code. Monitors, Trips, Drive Cycles and Readiness Codes