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DTC P0113: Intake Air Temperature (IAT) Sensor Circuit High Input

  1. Connect scan tool to Data Link Connector (DLC). Turn ignition on. Select IAT sensor parameter on scan tool. If scan tool displays -40°F (-40°C), go to next step. If scan tool displays near ambient temperature, check for an intermittent problem. SeeTROUBLE SHOOTING - NO CODES article.
  2. Disconnect IAT sensor harness connector. Turn ignition switch on and measure voltage at IAT sensor harness connector Light Blue wire. If voltage is between 4-6 volts, go to next step. If voltage is not as specified, inspect Light Blue wire for an open or short circuit between IAT sensor and PCM, or poor connection at PCM. If circuit is okay, replace PCM and retest system.
  3. Connect a fused jumper wire between IAT sensor connector terminals. If scan tool displays 302°F (150°C), replace IAT sensor. If scan tool display is not as specified, check Blue/White wire for open circuit or poor PCM harness connections. Repair as necessary. If connections are okay, replace PCM and retest system.
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