LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Saturn >> 2009 >> Sky Base, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 2.4L - DTC P0010 To DTC P0366 >> DTC P0106 >> Component Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

Component Testing

Skewed Sensor Test

  1. Using the following steps and referencing the table below will determine if the MAP sensor is skewed.
  2. Ignition ON, engine OFF, observe the MAP sensor scan tool parameter.
  3. Use the observed MAP Sensor Scan Tool parameter that is closest to a value that is indicated in the first column.

    THEN

  4. Using the J 23738-A  or the J 35555  to apply 5 in Hg of vacuum to the MAP sensor, the parameter in the first column should decrease by 17 kPa. The acceptable range is indicated in the second column.
  5. Using the J 23738-A  or the J 35555  to apply 10 in Hg of vacuum to the MAP sensor, the parameter in the first column should decrease by 34 kPa. The acceptable range is indicated in the third column.
  6. Substract 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 vacuum decrease is not within the specified range, replace the MAP sensor.

Skewed Signal Test

  1. Using the following steps and referencing the table below will determine if the MAP sensor is skewed.
  2. Ignition ON, engine OFF, observe the MAP Sensor Scan Tool parameter.
  3. Use the observed MAP Sensor Scan Tool parameter that is closest to a value that is indicated in the first column.

    THEN

  4. Using the J 23738-A  or the J 35555  to apply 5 in Hg of vacuum to the MAP sensor, the parameter in the first column should decrease by 17 kPa. The acceptable range is indicated in the second column.
  5. Using the J 23738-A  or the J 35555  to apply 10 in Hg of vacuum to the MAP sensor, the parameter in the first column should decrease by 34 kPa. The acceptable range is indicated in the third column.
Ignition ON, Engine OFF, MAP Sensor Parameter MAP Sensor Parameter With 17 kPa (5 Inches) of Vacuum Applied MAP Sensor Parameter With 34 kPa (10 Inches) of Vacuum Applied
100 kPa 79-87 kPa 62-70 kPa
95 kPa 74-82 kPa 57-65 kPa
90 kPa 69-77 kPa 52-60 kPa
80 kPa 59-67 kPa 42-50 kPa
70 kPa 49-57 kPa 32-40 kPa
60 kPa 39-47 kPa 22-30 kPa

Erratic Signal Test

  1. Ignition OFF, remove the MAP sensor.
  2. Install a 3A fused jumper wire between the 5-volt reference circuit terminal 1 and the corresponding terminal of the MAP sensor.
  3. Install a jumper wire between the low reference circuit terminal 2 of the MAP sensor and ground.
  4. Install a jumper wire at terminal 3 of the MAP sensor.
  5. Connect a DMM between the jumper wire from terminal 3 of the MAP sensor and ground.
  6. Ignition ON, install the J 23738-A  or J 35555  to the MAP sensor vacuum port. Slowly apply vacuum to the sensor while observing the voltage on the DMM. The voltage should vary between 0-5.2 volts without any spikes or dropouts.
    • If the voltage reading is erratic, replace the MAP sensor.
scientia non olet · About LEMON Manuals