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Home >> Pontiac >> 2007 >> G6 Base, 2.4 B >> Repair and Diagnosis >> Engine Performance >> System >> Engine Control System & Fuel System - 2.4L - DTC P0010 To DTC P0354 >> DTC P0106 >> Component Testing >> Skewed Signal Test

Skewed Signal Test

  1. Ignition OFF, remove the vacuum source from the MAP sensor
  2. Ignition ON, observe and recorded the scan tool MAP Sensor parameter. This is the first MAP sensor reading
  3. With the J 23738-A or J 35555 , apply 5 in Hg (17 kPa) of vacuum to the MAP sensor. Observe and record the scan tool MAP Sensor parameter. This is the second MAP sensor reading
  4. Subtract the second MAP sensor reading from the first MAP sensor reading. Verify that the vacuum decrease is within 1 in Hg (4 kPa) of the applied vacuum.
    • If the vacuum decrease is not within the specified range, replace the MAP sensor
  5. With the J 23738-A or J 35555 , apply 10 in Hg (34 kPa) of vacuum to the MAP sensor. Observe and record the scan tool MAP Sensor parameter. This is the third MAP sensor reading
  6. Subtract the third MAP sensor reading from the first MAP sensor reading. Verify that the vacuum decrease is within 1 in Hg (4 kPa) of the applied vacuum
    • If the voltage reading is erratic, replace the MAP sensor
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