Test Point 2

TEST POINT 2
Vehicle Speed

Note:
In the Actual Values menu item of the PST 2, the current values of the following parameters can be read out and checked.

- Engine off

PST 2 display: 0 km/h

- Drive vehicle at a constant speed

PST 2 display: Tester display approximately equal to actual driving speed in km/h.

Troubleshooting

- Switch off ignition

- Pull off plug II on the instrument cluster

- Switch ignition on

- Lift the vehicle

- Rotate the rear left wheel by hand

- measure the voltage between plug II, pin 16 and ground (AC range)

Voltmeter display: > 1 Volt

If the wheel speed signal is present at the instrument cluster, replace the instrument cluster.

If the wheel speed signal is not present at the instrument cluster:

- Switch off ignition

- Pull plug off the ABS control module

- Ohmmeter on instrument cluster plug II, pin 16 and ground.

Display: infinity

- Ohmmeter on instrument cluster plug II, pin 16 and plug on ABS control module pin 21.

Display: < 5 ohms