| For engines with identification characters AEG, APK, AQY |
| –
| Connect test box-V.A.G 1598/22- to the wiring loom on the engine control unit → Chapter. |
| –
| Connect voltage tester to bushes 2 and 20 of the test box. |
| For engines with identification characters AZH, AZJ |
| –
| Connect test box-V.A.G 1598/31- to the wiring loom on the engine control unit → Chapter. The control unit is not connected. |
| –
| Connect voltage tester to bushes 1 and 54 of the test box. |
| Continued for all engines |
| –
| Raise vehicle at front left. |
| –
| Rotate front wheel and observe voltage tester. |
| Specified value: the LED must flicker |
| If the LED does not flash: |
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