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Home >> Hummer >> 2008 >> H2 4D Utility Wagon >> Repair and Diagnosis >> External Pages >> Different car >> Section 512 (Engine Controls/Fuel - 5.3L, 6.0L, 6.2L - DTC P0010 To DTC P0358) >> Diagnostic Information and Procedures >> DTC P0106 >> Component Testing

Component Testing

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NOTE:

You must perform the Circuit/System Testing in order to verify the integrity of the MAP sensor circuits before proceeding with the 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.
  4. Using the J-35555  metal mityvac or the J-23738-A  mityvac 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-35555  metal mityvac or the J-23738-A  mityvac 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 5 Inches of Vacuum Applied MAP Sensor Parameter With 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 3 A fused jumper wire between the 5 V reference circuit terminal C and the corresponding terminal of the MAP sensor.
  3. Install a jumper wire between the low reference terminal A of the MAP sensor and ground.
  4. Install a jumper wire at terminal B of the MAP sensor.
  5. Connect a DMM between the jumper wire from the terminal B of the MAP sensor and ground.
  6. Ignition ON, with the J-35555  metal mityvac or the J-23738-A  mityvac, slowly apply vacuum to the sensor while observing the voltage on the DMM. The voltage should vary between 4.9-0.2 V without any spikes or dropouts.
    • If the voltage is erratic, replace the MAP sensor.
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