LEMON Manuals: Even more car manuals for everyone: 1960-2025
Home >> Dodge and Ram >> 2003 >> Durango Base, 4.7 N, 4WD, Part Time >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 4.7L >> Diagnostic Tests >> DTC P0106: Map Sensor Performance >> Testing
April 5, 2026: LEMON Manuals is launched! Read the announcement.

DTC P0106: Map Sensor Performance: Testing

  1. Ignition on, engine not running. With the DRBIII® scan tool, 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 CONDITION  under SELF-DIAGNOSTIC SYSTEM.
  2. Turn the ignition off. 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.
    NOTE: Properly install the MAP Sensor before continuing.
  3. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Ignition on, engine not running. Measure the voltage on the (K1) MAP signal circuit in the MAP sensor harness connector. Is the voltage above 5.2 volts? If yes, repair the short to voltage in the (K1) MAP signal circuit. If no, go to next step.
  4. Turn the ignition off. Disconnect the PCM harness connectors. Ignition on, engine not running. Measure the voltage of the (K6) 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.
  5. With the DRBIII® scan tool, monitor the MAP sensor voltage with the sensor harness connector disconnected. Is the voltage above 1.2 volts? If yes, replace the MAP sensor. If no, go to next step.
  6. Turn the ignition off. Disconnect the PCM harness connectors. Measure the resistance between ground of the (K1) MAP signal circuit at the MAP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the excessive resistance between ground and the (K1) MAP signal circuit. If no, go to next step.
  7. Measure the resistance between the (K1) MAP signal circuit and the (K4) sensor ground circuit in the MAP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the short between the (K4) sensor ground and the (K1) MAP signal circuit. If no, go to step  10.
    8. 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. Install Miller Special Tool (8815) to perform diagnosis.
  8. Turn the ignition off. Disconnect the PCM harness connector. Measure the resistance of the (K6) 5-volt supply circuit from the MAP sensor harness connector to the appropriate terminal of Miller Special Tool (8815). Is the resistance below 5.0 ohms? If yes, go to next step. If no, repair the excessive resistance in the (K6) 5-volt supply circuit.
  9. Measure the resistance between ground and the (K6) 5-volt supply circuit in the MAP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the excessive resistance between ground and the (K6) 5-volt supply circuit. If no, go to next step.
  10. Using the wiring diagram as a guide, inspect the wire harness and connectors. Pay particular attention to all power and ground circuits. If there are no possible causes remaining, replace and program the PCM. See PROGRAMMING .
scientia non olet · About LEMON Manuals