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2. 1.8L ENGINE - CHECK INTAKE AIR TEMPERATURE (IAT) SENSOR ELECTRICAL CONNECTOR • Disconnect the IAT sensor (1) (For 1.8L engine: IAT sensor is built-into MAF sensor) electrical connec- • Inspect the electrical connector for damage. Is the electrical connector OK? Yes >> Go to the next step. No >> Repair or replace the electrical connector as necessary. 3. 1.8L ENGINE - CHECK THE INTAKE AIR TEMPERATURE (IAT) SENSOR SIGNAL CIRCUIT • Turn ignition switch on. • Check reference voltage between IAT sensor termi- nal 1 and ground in the IAT sensor electrical con- • 5 V should exist. Is the check result normal? Yes >> Go to Step 6. No >> Repair circuit for an open or short to DIAGNOSIS & TESTING LTSMD030075 LTSMD030031 03
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