Cherokee & Wrangler

NOTE: For circuit identification and wiring diagram, see WIRING DIAGRAMS article. After each repair procedure has been completed, reconnect all components. Perform TEST VER-2 under VERIFICATION TESTS to ensure system is functioning properly.

Turn ignition on, engine off. Using scan tool, read and record IAT sensor value. Remove IAT sensor. Fig 1 or Fig 2 . Using a thermometer, read temperature inside IAT sensor opening. If IAT sensor value is within 10 degrees of thermometer reading, reinstall IAT sensor. IAT sensor is operating properly. Test is complete. If IAT sensor value is not within 10 degrees of thermometer reading, replace IAT sensor.

Fig 1: Locating MAP, IAT & TP Sensors, & IAC Motor (Cherokee 2.5L & Wrangler 2.5L)

Courtesy of DAIMLERCHRYSLER CORPORATION

Fig 2: Locating MAP, IAT & TP Sensors, & IAC Motor (Cherokee 4.0L & Wrangler 4.0L)

Courtesy of DAIMLERCHRYSLER CORPORATION