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Map Sensor

  1. MAP sensor is located on right inside fenderwell. See Figure . Start engine, and warm to operating temperature. Disconnect MAP sensor electrical connector. Disconnect and plug vacuum hose "A" at MAP sensor. See Fig 1 .
  2. Connect voltmeter leads between terminals No. 1 and No. 2 (harness side) of MAP sensor connector. Voltmeter should read more than 2.5 volts. Connect vacuum hose "A" to MAP sensor.
  3. Backprobe and measure voltage across terminals No. 1 and No. 2 at MAP sensor connector. Less than 2.5 volts should be indicated. If voltage readings are not as specified, replace MAP sensor. Also, see IDLE (VACUUM) SWITCH & MAP CIRCUIT CHECK  .
Fig 1: Testing MAP Sensor Voltage
G122308Courtesy of ISUZU MOTOR CO.
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