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DTC P0106: MAP Sensor Vacuum Connection Problem

NOTE: Before you troubleshoot, record all freeze data and review the general troubleshooting information (see GENERAL TROUBLESHOOTING INFORMATION ).
  1. Reset the ECM with the HDS (see HDS CLEAR COMMAND ).
  2. Start the engine and keep the engine speed at 1,000 RPM for one minute with the transmission in Park or neutral position.
  3. Check for Temporary DTCs or DTCs with the HDS.

    Is DTC P0106 indicated? 

    1. YES  - Go to step  8.
    2. NO  - Go to step 4.
  4. Turn the ignition switch OFF.
  5. Turn the ignition switch ON (II).
  6. Check the MAP SENSOR in the DATA LIST with the HDS.

    Does it indicate atmospheric pressure? 

    1. YES  - Go to step 7.
    2. NO  - Replace the MAP sensor.
  7. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then turn the ignition switch OFF.
  8. Start the engine.
  9. Check the MAP SENSOR in the DATA LIST with the HDS.

    Is about 40.0 kPa (12.0 in.Hg, 300 mmHg), or 1.23 V or less indicated within 1 second after starting the engine? 

    1. YES  - Intermittent failure, system is OK at this time. Check for poor connections or loose terminals at the MAP sensor and the ECM.
    2. NO  - Go to step 10.
  10. Check for a vacuum leak between the MAP sensor and the throttle body.

    Is there a leak? 

    1. YES  - Repair the vacuum leak.
    2. NO  - Go to step 11.
  11. Turn the ignition switch OFF.
  12. Turn the ignition switch ON (II).
  13. Check the MAP SENSOR in the DATA LIST with the HDS.

    Does it indicate atmospheric pressure? 

    1. YES  - Go to step 14.
    2. NO  - Replace the MAP sensor.
  14. Start the engine. Hold the engine speed at 3,000 rpm without load (in Park or neutral) until the radiator fan comes on, then turn the ignition switch OFF.
  15. Start the engine.
  16. Check the MAP SENSOR in the DATA LIST with the HDS.

    Is about 40.0 kPa (12.0 in.Hg, 300 mmHg), or 1.23 V or less indicated within 1 second after starting the engine? 

    1. YES  - Update the ECM if it does not have the latest software, or substitute a known-good ECM; 2000-2001 M/T models (see HOW TO SUBSTITUTE THE ECM FOR TESTING PURPOSES (2000-2001 M/T MODELS) ), 2002-2006 M/T models and CVT model (see ECM UPDATING AND SUBSTITUTION FOR TESTING-2002-2006 M/T MODELS AND CVT MODEL ), then recheck. If the symptom/indication goes away with a known-good ECM, replace the original ECM (see ECM REPLACEMENT ).
    2. NO  - Replace the MAP sensor.
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