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Home >> Mazda >> 2000 >> Millenia Base, 2.3 2 >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics - 2.3L >> Diagnostic Trouble Code Tests >> DTC P1110: Intake Air Temperature (IAT) Sensor Dynamic Chamber, Open Or Short Circuit >> Diagnosis & Repair Procedure
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Diagnosis & Repair Procedure

  1. Ensure FREEZE FRAME PID DATA has been recorded. Inspect all applicable harness connectors. Repair as needed.
  2. Using scan tool, access PID/DATA MONITOR. Record PID data for IATDC V. Compare reading with specification. See PIN VOLTAGE/PID VALUE CHARTS article. If data is not within specification, go to next step. If data is within specification, go to step  6 .
  3. Turn ignition off. Disconnect IAT (D/C) sensor connector. Turn ignition on. Measure voltage between ground and terminal "A" (Light Green wire) on harness connector. If 5 volts is present, go to next step. If 5 volts is not present, check for open or short of Light Green wire between IAT (D/C) sensor and PCM. Repair as needed.
  4. Turn ignition off. Disconnect PCM harness connectors. PCM is mounted in front of center console, under radio. Check continuity of Black/Yellow wire between terminal No. 3AB on PCM connector and terminal "B" on IAT (D/C) sensor harness connector. See Figure . Repair as needed. If continuity exists, go to next step.
  5. Inspect IAT (D/C) sensor. See appropriate SYSTEM & COMPONENT TESTING article. Replace as needed. If IAT (D/C) sensor is okay, go to next step.
  6. Erase DTCs. See CLEARING CODES in appropriate SELF-DIAGNOSTICS - INTRODUCTION article. If DTC resets, replace PCM. If DTC is not present, intermittent poor harness connection may have caused DTC to originally set.
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