Operation CHARM: Car repair manuals for everyone.

Test Point 2



Checking The Actual Values

In the Actual values menu item, the current values of the following parameters can be read out and checked:

Test point 2
Vehicle speed

- Engine off
PST2 display 0 km/h

- Drive vehicle at a constant speed
PST2 display

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

Troubleshooting:
- Switch off ignition
- Pull off plug lion 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 V

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
Ohmmeter display: Infinity ohm

- Ohmmeter on instrument cluster plug II pin 16 and plug on ABS control module pin 21
Ohmmeter display: [<] 5 Ohms