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DTC P0106: Map Sensor Performance: Testing

NOTE: If DTC P0107 or P0108 is also set with P0106, diagnose DTCs before continuing with this test. See DTC P0107: MAP SENSOR LOW  or DTC P0108: MAP SENSOR HIGH  .
  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. Ignition on, engine not running. With the DRBIII® scan tool, read the MAP sensor voltage. Is the voltage below 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. Ignition on, engine not running. Measure the voltage of the (K6) 5-volt supply circuit in the MAP sensor harness connector. Is the voltage between 4.5 to 5.2 volts? If yes, go to next step. If no, go to step  8.
  4. Turn the ignition off. Disconnect the MAP sensor harness connector. With the DRBIII® scan tool, monitor the MAP sensor voltage. Ignition on, engine not running. Is the voltage between 4.75 and 5.2 volts? If yes, inspect the MAP sensor and the intake for any restrictions, repair as necessary. If OK, replace the MAP sensor.
  5. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. Measure the resistance between ground and the (K1) MAP signal circuit at the MAP sensor harness connector. Is the resistance below 100 ohms? If yes, repair the short to ground in the (K1) MAP signal circuit. If no, go to next step.
  6. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. 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 (K4) sensor ground shorted to the (K1) MAP signal circuit. If no, go to next step.
  7. 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 .
  8. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. 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 short to ground in the (K6) 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. Install Miller Special Tool (8815) to perform diagnosis.
  9. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. 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 open in the (K6) 5-volt supply circuit.
  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 .
    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. Install Miller Special Tool (8815) to perform diagnosis.
  11. Turn the ignition off. Disconnect the MAP sensor harness connector. Disconnect the PCM harness connectors. 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 open in the (K6) 5-volt supply circuit.
  12. 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.
  13. If there are no possible causes remaining, replace the MAP sensor.
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