Test point 12

Average speed

Engine off

Select average speed with on-board computer selector lever PST2 display:

Tester display approximately equals the average speed See also Actual values chapter, "Speed", Test point 2

Engine off PST2 display:

Tester display approximately equals the ambient temperature


Warm sensor with fingers and observe the increase in temperature on PST2. If no change in temperature is determined or displayed:

Disconnect outside temperature sensor

Switch ignition on

Measure the voltage at the outside temperature plug pin 1 and

Ohmmeter on pin 1 and pin 2 on the outside temperature sensor Switch off ignition

Pull off plug I on the instrument cluster Switch ignition on

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