ecu is the following · · · · · cold and hot start acceleration enrichment battery ... sensor map the map sensor is a three-wire sensor located on or attached to the ... air mass flow rate the maf works on the hotwire or hot film concept the hotwire/ ... the passing air cools down the hotwire/film and the added energy required to ... to the mass of air passing by the hotwire the maf also compensates for humidity ... sensor tps the tps is a three-wire sensor that is mounted on the throttle ...