BMW ONBOARD COMPUTER User Manual download pdf (Page 9)

E46 Driver information

ANALOG INPUT SIGNALS

BATTERY VOLTAGE - Battery voltage is monitored by the cluster and a fault is stored if

the voltage exceeds 16 volts

FUEL TANK LEVEL - Two lever action sensors are wired in parallel to the cluster. The two

varying voltage signals are processed by the cluster for fuel gauge and low fuel warning

display.

OUTSIDE TEMPERATURE SENSOR - A NTC sensor is used to measure the ambient

temperature. The signal is processed by the cluster and passed out over the K Bus to mod-

ules requiring this input for processing.

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BMW ONBOARD COMPUTER User Manual Page 9