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Home >> Dodge and Ram >> 2002 >> Durango Base, 5.9 Z, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - NGC >> Diagnostic Tests >> DTC P0106: Map Sensor Performance >> Testing
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DTC P0106: Map Sensor Performance: Testing

NOTE: If DTC P0107 or P0108 is also set with this DTC, diagnose that DTC before continuing with this test. See DTC P0107: MAP SENSOR CIRCUIT LOW  or DTC P0108: MAP SENSOR CIRCUIT HIGH  .
  1. Turn the ignition on, with the engine off. With the DRBIII(R), read DTCs and record the related Freeze Frame data. Is the Good Trip counter displayed and equal to zero? If yes, go to next step. If no, see INTERMITTENT FAILURES  under ON-BOARD DIAGNOSTICS.
  2. With the DRBIII(R), read the MAP Sensor voltage. Is the voltage less than 3.19 volts? If yes, go to next step. If no, go to step  11
  3. Turn the ignition off. Disconnect the MAP Sensor harness connector. Turn the ignition on, with the engine off. Measure the voltage on the 5-volt Supply circuit in the MAP Sensor harness connector. Is the voltage 4.5-5.2 volts? If yes, go to next step. If no, go to step  8 .
  4. With the DRBIII(R), read the MAP Sensor voltage. Is the voltage more than 1.2 volts? If yes, replace the MAP Sensor. If no, go to next step.
  5. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance between ground and the MAP Signal circuit in the MAP Sensor harness connector. Is the resistance less than 100 ohms? If yes, repair the short to ground in the MAP Signal circuit. If no, go to next step.
  6. Measure the resistance between the MAP Signal circuit and the Sensor Ground circuit in the MAP Sensor harness connector. Is the resistance less than 100 ohms? If yes, repair the short between the Sensor Ground and the MAP Signal circuit. If no, go to next step.
    7. NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push-out. Repair as necessary.
  7. There are no possible causes remaining, replace the PCM.
  8. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance between ground and the 5-volt Supply circuit in the MAP Sensor harness connector. Is the resistance less than 100 ohms? If yes, repair the short to ground in the 5-volt Supply circuit. If no, go to next step.
    9. CAUTION: DO NOT probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal-to-pin connection. Use Miller Special Tool (8815) when performing diagnosis at PCM harness connectors.
  9. Measure the resistance of the 5-volt Supply circuit from the MAP Sensor harness connector to the appropriate terminal of the Miller Special Tool. Is the resistance less than 5.0 ohms? If yes, go to next step. If no, repair the open in the 5-volt Supply circuit.
    10. NOTE: Before continuing, check the PCM harness connector terminals for corrosion, damage, or terminal push-out. Repair as necessary.
  10. There are no possible causes remaining, replace the PCM.
    11. CAUTION: DO NOT probe the PCM harness connectors. Probing the PCM harness connectors will damage the PCM terminals resulting in poor terminal-to-pin connection. Use Miller Special Tool (8815) when performing diagnosis at PCM harness connectors.
  11. Turn the ignition off. Disconnect the MAP Sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance of the 5-volt Supply circuit from the MAP Sensor harness connector to the appropriate terminal of the Miller Special Tool. Is the resistance less 5.0 ohms? If yes, go to next step. If no, repair the open in the 5-volt Supply circuit.
  12. Remove the MAP Sensor. Inspect the vacuum port, check for restrictions or any foreign materials. Were any restrictions found? If yes, repair as necessary. If no, go to next step.
  13. There are no possible causes remaining, replace the MAP Sensor.
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