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Home › Chevrolet › 2007 › Optra5 LS, Automatic › Repair and Diagnosis › Engine Performance › System › Engine Controls And Fuel - 1.8L (LDA) › Diagnostic Information and Procedures › DTC P0107 or P0108 › Component Testing

Component Testing

  1. Ignition OFF, perform one of the following applicable procedures.
    • Disconnect the vacuum supply hose from the MAP sensor.
    • Remove the MAP sensor from the intake manifold.
  2. Ignition ON, observe and record the scan tool MAP sensor pressure data parameter. This is the first MAP sensor reading.
  3. With the J 23738-A  , apply 17 kPa (5 in Hg) of vacuum to the MAP sensor. Observe and record the scan tool MAP sensor pressure data 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 4 kPa (1 in Hg) of the applied vacuum.
    • If the vacuum decrease is not within the specified range, replace the MAP sensor.
  5. With the J 23738-A  , apply 34 kPa (10 in Hg) of vacuum to the MAP sensor. Observe and record the scan tool MAP sensor pressure data 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 4 kPa (1 in Hg) of the applied vacuum.
    • If the vacuum is not with in the specified range, replace the MAP sensor.
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