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Home >> Suzuki >> 2002 >> Grand Vitara JLX, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - Self-Diagnostics >> Diagnostic Tests >> DTC P0113: Intake Air Temperature (IAT) Sensor Circuit, High Input >> Diagnosis & Repair Procedure
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Diagnosis & Repair Procedure

  1. Perform DTC CONFIRMATION TEST  . If DTC P0113 is set, go to next step. If DTC P0113 is not set, problem is intermittent. System is okay at this time. See INTERMITTENTS TROUBLE SHOOTING - NO CODES article.
  2. Turn ignition off. Disconnect IAT sensor connector. Turn ignition on. Measure voltage between ground and IAT sensor harness connector terminal No. 2 (Light Blue wire). If 4.5-5.5 volts exist, go to next step. If 4.5-5.5 volts do not exist, check Light Blue wire for open or short to power between IAT sensor and ECM (PCM) 26-pin connector C51-3 terminal No. 8. Repair as necessary and go to DTC CONFIRMATION TEST  . See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. If wire is okay, replace ECM (PCM) and go to DTC CONFIRMATION TEST  .
  3. Turn ignition off. Using a fused jumper wire, connect IAT sensor harness connector terminals together. Turn ignition on. Measure voltage between ground and IAT sensor harness connector terminal No. 2 (Light Blue wire). If less than .15 volt exists, go to next step. If .15 volt or more exists, check for an open or short in Gray/Yellow wire between IAT sensor and ECM (PCM) 26-pin connector C51-3 terminal No. 21. See ENGINE PERFORMANCE in SYSTEM WIRING DIAGRAMS article in ELECTRICAL. Repair as necessary and go to DTC CONFIRMATION TEST  .
  4. Check IAT sensor operation. See DTC P0111: INTAKE AIR TEMPERATURE (IAT) SENSOR CIRCUIT RANGE/PERFORMANCE PROBLEM  . Replace as necessary and go to DTC CONFIRMATION TEST  . If IAT sensor is okay, replace ECM (PCM) and go to DTC CONFIRMATION TEST  .
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