Kappi2907

I used Scantool with T-OBD to test Climate Control cycles on different 964's.

On my '89 (non-airco) none of the Climate Control tests work. on a '91 & '92 (with airco) all the tests work fine.

Is there ay difference in CCU version and/or non-airco - airco CCU's?

Does an update CCU makes it possible to run the Climate Control tests on '89 964?

All other Scantool functions work fine.

Any help welcome.

Thanks!