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Home >> Suzuki >> 2001 >> Vitara JS, 2D Utility, 1.6, Standard >> Repair and Diagnosis >> Engine Performance >> System >> Engine Controls - System & Component Testing >> Engine Sensors & Switches >> Intake Air Temperature Sensor
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Intake Air Temperature Sensor

  1. Disconnect Intake Air Temperature (IAT) sensor connector. Turn ignition on. Check voltage between ground and Gray/Red wire (Esteem, Vitara 1.6L and 2.0L), Light Blue wire (Grand Vitara 2.5L and XL-7) or Gray wire (Swift) terminal of connector. If voltage is not 4-6 volts (4.5-5.5 on Grand Vitara and XL-7), check wiring harness for an open or short. If voltage is as specified, go to next step.
  2. Remove IAT sensor and place in container of water with a thermometer. Heat water to specified temperature and check resistance. See IAT SENSOR RESISTANCE SPECIFICATIONS  table. See Fig 1 . Replace IAT sensor if resistance is not within specification.
IAT SENSOR RESISTANCE SPECIFICATIONS

Sensor Temperature - °F (°C) Resistance - k/ohms
Esteem & Swift
68 (20) 2.21-2.69
176 (80) .322
Grand Vitara, Vitara & XL-7
68 (20) 2.09-2.81
176 (80) .322
Fig 1: Testing Intake Air Temperature Sensor Resistance (Grand Vitara, Vitara & XL-7 Shown; Esteem & Swift Are Similar)
G99F51057Courtesy of SUZUKI OF AMERICA CORP.
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