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DTC P0113 - INTAKE AIR TEMPERATURE (IAT) SENSOR HIGH VOLTAGE INPUT Isuzu Oasis I

Testing & Diagnostics ~211 words
  1. Turn ignition on. Check IAT sensor using OBD-II scan tool. If -4°F (-20°C) or less, or 5.0 volts is indicated, go to next step. If -4°F (-20°C) or less, or 5.0 volts is not indicated, problem is intermittent. Check for poor connections or loose wires at IAT sensor connector and PCM connector. See WIRING DIAGRAMS article.
  2. Turn ignition off. Disconnect IAT 2-pin connector. Connect a fused jumper wire between IAT sensor connector terminals. Turn ignition on. Using OBD-II scan tool, check intake air temperature. If -4°F(-20°C) or less, or 5.0 volts is indicated, go to next step. If -4°F (-20°C) or less, or 5.0 volts is not indicated, replace IAT sensor.
  3. Turn ignition off. Using backprobe kit, connect a fused jumper wire between PCM 31-pin connector "C" terminal C18 (Green/Black wire) and terminal C25 (Red/White wire). (Схема №3) Turn ignition on. Using OBD-II scan tool, check intake air temperature. If -4°F (-20°C) or less, or 5.0 volts is not indicated, repair open in wiring between IAT sensor and PCM connector "C". See WIRING DIAGRAMS article. If -4°F (-20°C) or less, or 5.0 volts is indicated, substitute a known-good PCM and recheck. If symptom or indication goes away, replace original PCM.

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