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152 ELECTRIC/ELECTRONIC SYSTEM D AILY Base - May 2004 engine aspiration manifold. aspiration conduit between the turbine and the air filter. / A28. Pin 1 sensor - Pin A5 ECU - temperature signal The operating principle is based on a heated membrane inserted in a measurement canal through which air to the engine flows. some 120 °C above incoming air level by the heating resistor. subtract heat from the membrane so current must cross the resistor to maintain constant film temperature. the engine and is measured with a Wheatstone bridge and the signal is forwarded to the electronic centre. 1. Connector - 2. Gauge body - 3. Air input grid TECHNICAL VIEW OF GAUGE CONNECTOR Figure 164 Figure 165 003333t 003334t |