Tercel Sedan 2-Door L4-1456cc 1.5L SOHC (3E-E) (1991)
Manifold Pressure/Vacuum Sensor: Description and Operation
Manifold Absolute Pressure (MAP) Sensor
The MAP Sensor, located on the center of the firewall, is an engine vacuum sensor that provides input to the ECU so fuel can be injected according to
engine load, rpm, acceleration and deceleration. The MAP Sensor also provides some air/fuel mixture compensation for altitude. The ECU provides
reference voltage to the MAP through terminal VCC, ground through terminal E2 and input to the ECU through terminal PIM.