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Home >> Hyundai >> 2012 >> Veracruz GLS, AWD >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System Diagnosis (3 Of 3) >> DTC P1107: MAP Sensor Circuit Intermittent Low >> Inspection Repair >> Component Inspection
July 1: So it begins. Don't worry, this is not in the correct legal jurisdiction!

Component Inspection

  1. MAPS performance test
    1. IG "OFF"
    2. Connect scantool to Data Link Connector (DLC) and select "Oscilloscope" then, connect probes to output signal lines of MAPS and TPS.
    3. Start engine and monitor the signal waveforms during accelerating and decelerating
      1. Specification :
      PRESSURE SPECIFICATION

      Pressure (kPa) 20 35 60 95 101.32
      Voltage (V) 0.789 1.382 2.369 3.75 4
      Tolerance (V) ± 0.045
      Fig 1: MAPS Signal Waveform
      G06860596Courtesy of HYUNDAI MOTOR CO.
      Fig 2: Checking MAPS Signal Waveform
      G06860597Courtesy of HYUNDAI MOTOR CO.
    4. Is the waveform displayed correctly? (Compare the response time of TPS and MAPS)

      YES

      Substitute with a known - good PCM and check for proper operation.

      f the problem is corrected, replace PCM and go to VERIFICATION OF VEHICLE REPAIR  procedure.

      NO

      After replacing MAPS with new one, if it operates normally, replace MAPS and go to VERIFICATION OF VEHICLE REPAIR .

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