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Home >> BMW >> 2000 >> 740iL (E38) V8-4398cc 4.4L DOHC (M62 TU) >> Repair and Diagnosis >> Heating and Air Conditioning >> Description and Operation >> IHKA - E38 >> IHKA E38 Control Panel/Module Functions
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IHKA E38 Control Panel/Module Functions




IHKA E38 CONTROL PANEL/MODULE FUNCTIONS

The E38 control panel/module performs the same functions as the E31 control module. It controls:

- Blower speed
- Mixing flaps
- Auxiliary coolant pump
- Heater core temperatures
- Auxiliary cooling fan
- Evaporator temperature
- Air intake flaps (fresh/recirculating)
- Special programmed functions
- Air distribution flaps (face vent, foot-well, defroster, console rear outlet)
- Windshield base/washer spray jet heaters

In addition, it has an EEPROM to store fault codes. The EEPROM allows the module to "go to sleep" about 16 minutes after the ignition is switched to "Off," to reduce power consumption without losing the contents of the memory.

Fault codes stored cannot be erased by disconnecting the battery; the DIS/MoDiC must be used. A maximum of six fault codes can be stored at one time.


NOTE: If the control module is replaced it must be coded.
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