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Test NTC-6A - Checking Map Sensor Calibration

NOTE: Perform TEST TC-118A, TC-119A, NTC-1A or NTC-5A before proceeding.
  1. Ensure engine is off. Install vacuum "T" and vacuum gauge on vacuum hose to MAP sensor. See MAP SENSOR LOCATION  table.
  2. Start engine and allow engine to idle. If engine will not idle, maintain a constant RPM above idle. Using scan tool, read MAP sensor vacuum. Read engine vacuum on vacuum gauge.
  3. If MAP sensor vacuum is not within one in. Hg of engine vacuum on vacuum gauge, replace MAP sensor. Perform TEST VER-2A. If MAP sensor vacuum is within one in. Hg of engine vacuum on vacuum gauge, MAP sensor is operating correctly. Test is complete.
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