October 30: LEMON manuals on a temporary server, it is slow and having issues, download the manuals you need! Later in November we will switch back to the fast server.

Manifold Absolute Pressure (Map) Sensor

MAP sensor measures absolute pressure in intake manifold. Both mixture density and ambient barometric pressure are supplied to ECU by MAP sensor. Sensor is mounted in middle of firewall in engine compartment. Sensor receives manifold pressure information through vacuum line from throttle body. See Fig 1 .

Fig 1: Manifold Absolute Pressure (MAP) Sensor

Courtesy of AMERICAN MOTORS/JEEP CORP.