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E46 Climate Control
Review Questions
1. Where is the interior temperature sensor located in a vehicle equipped with IHKA? What
is this input used for?
2. How does the IHKA control the auxiliary fan? What inputs are used by the IHKA to
determine the fan speed?
4. A customer complains that every time he enters his car the AC compressor is switched
on automatically. What could be causing his complaint?
5. Describe briefly how the influence of Solar radiation affects the IHKA settings.
6. How can a technicaian test for the correct operation of the Solar Sensor?
7. What is the purpose for the RPM input to the IHKA?
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