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Home >> Cadillac >> 2007 >> XLR V >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls And Fuel - 4.4L - DTC P0010 To DTC P0154 >> DTC P0106 >> Circuit/System Testing
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Circuit/System Testing

    IMPORTANT: You must perform the Circuit/System Verification before proceeding with the circuit/system testing.
  1. Ignition OFF, disconnect the harness connector at the MAP sensor.
  2. Ignition OFF, test for less than 5 ohms of resistance between the low reference circuit terminal A and ground.
    • If greater than the specified range, test the low reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
  3. Ignition ON, test for 4.8-5.2 volts between the 5-volt reference circuit terminal C and ground.
    • If less than the specified range, test the 5-volt reference circuit for an open/high resistance. If the circuit tests normal, replace the ECM.
  4. Verify the scan tool MAP Sensor parameter is less than 15 kPa.
    • If greater than the specified range, test the signal circuit for a short to voltage. If the circuit tests normal, replace the ECM.
  5. Install a 3-amp fused jumper wire between the signal circuit terminal B and the 5-volt reference terminal. Verify the scan tool MAP Sensor parameter is greater than 200 kPa.
    • If less than the specified range, test the signal circuit for a short to ground, open or high resistance. If the circuit tests normal, replace the ECM.
  6. If all circuits test normal, test the MAP sensor. Refer to Component Test  for instructions.
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