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Home › Isuzu › 1995 › Trooper LS, Standard › Repair and Diagnosis › Engine Performance › System › Engine Controls - System/Component Tests - DOHC › Engine Sensors & Switches › Manifold Absolute Pressure (Map) Sensor

Manifold Absolute Pressure (Map) Sensor

NOTE: A malfunctioning MAP sensor may set Code 33A or 33B. For additional testing, see TESTS W/CODES - 3.2L article.
  1. Using Digital Volt-Ohmmeter (DVOM) with a minimum 10-megohm input impedance, connect DVOM (on voltmeter scale) to Green/Orange wire and Blue/White wire at back of MAP sensor connector. Voltage should indicate more than 2.5 volts. Unplug and reconnect MAP sensor vacuum hose. Voltage should indicate less than 2.5 volts. If voltage is not as indicated, replace MAP sensor.
  2. On Trooper DOHC, sensor is located on top front of engine to left of throttle body. To diagnose MAP sensor problem, proceed to CHART C-1D  under DIAGNOSTIC CHARTS.
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