3 Series E91 330d (M57T2) TOUR
Replacement value for the sensor: 20
°
C
> E70
The separate settings for the left and right sides in the rear mean that the rear heating and air-conditioning
control panel has an automatically ventilated interior temperature sensor.
-
Solar sensor (IHKA only)
The solar sensor comprises a photodiode (2 photodiodes on the E70) and measures external sources of light or
heat (e.g. sunlight), which could affect the climate of the vehicle interior.
Sunlight compensation is only active in the automatic program.
> E81, E82, E87, E90, E91, E92, E93 (only IHKA)
The solar sensor supplies the IHKA control unit with an analogue signal that depend on the intensity of the
sunlight.
The solar sensor is clipped into the middle of the dashboard.
> E70 (IHKA High only)
The solar sensor is a component of the rain-light solar sensor (RLSS).
The RLSS measures external sources of light and heat (e.g. sunlight) for left and right sides of the vehicle. The
sensor data are processed in the electronic evaluation unit of the rain-light solar sensor.
Signal path: RLSS -> LIN bus -> FZD (overhead control panel; also serves as data interface)
-> IHKA control unit
The rain-light solar sensor is attached to the inside of the windscreen within the sweep range of the windscreen
wipers.
-
Sensor for automatic air recirculation mode
> E81, E82, E87, E90, E91, E92, E93 only IHKA
> E70: IHKA High only
The AUC sensor is fitted to the microfilter compartment. The AUC sensor detects the following pollutant
emissions from spark-ignition and diesel engines:
•
Hydrocarbons (CH)
•
Carbon monoxide (CO)
•
Nitric oxides (nitrogen monoxide NO, nitrogen dioxide NO
2
)
The junction box provides the power for the AUC sensor.
The junction box electronics unit evaluates the data from the AUC sensor.
The junction box electronics unit transmits relevant data to the IHKA control panel (via the K-CAN).
-
Condensation sensor (IHKA only)
> E81, E82, E87, E90, E91, E92, E93 only IHKA
> E70: IHKA High only
The condensation sensor measures the air humidity on the windscreen in the vehicle interior. The condensation
sensor is able to detect condensation on the windscreen before it becomes visible.
The condensation sensor draws its power supply from the roof control panel (FZD).
The FZD evaluates the condensation sensor data.
The FZD sends appropriate data to the IHKA control unit (via the K-CAN).
Measures to avoid condensation on the window surfaces are only initiated in automatic mode.
[more ...]
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Evaporator temperature sensor (IHKR, IHKA only)
SBT Integrated heating control and air-conditioning system E70, E81, E82, E87, E90,
BMW AG - TIS
18.02.2013 21:12
Issue status (12/2007) Valid only until next DVD is issued
Copyright
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