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P0111 IAT SENSOR EC-181 < DTC/CIRCUIT DIAGNOSIS > [VK56DE] C D E F G H I J K L M A EC N P O P0111 IAT SENSOR DTC Logic INFOID:0000000009886576 DTC DETECTION LOGIC DTC CONFIRMATION PROCEDURE 1. INSPECTION START Is it necessary to erase permanent DTC? YES >> GO TO 3. NO >> GO TO 2. 2. PERFORM COMPONENT FUNCTION CHECK Perform component function check. Refer to EC-182, "Component Function Check" . NOTE: Use the component function check to check the overall function of the IAT sensor circut. During this check, a 1st trip DTC might not be confirmed. YES >> INSPECTION END NO >> Proceed to . 3. PRECONDITIONING If DTC CONFIRMATION PROCEDURE has been previously conducted, always perform the following proce- dure before conducting the next test. 1. Turn ignition switch OFF and wait at least 10 seconds. 2. Turn ignition switch ON. 3. Turn ignition switch OFF and wait at least 10 seconds. TESTING CONDITION: • Before performing the following procedure, do not add fuel. • Before performing the following procedure, check that fuel level is between 1/4 and 4/4. • Before performing the following procedure, confirm that battery voltage is 11 V or more at idle. >> GO TO 4. 4. PERFORM DTC CONFIRMATION PROCEDURE 1. Start engine and let it idle for 60 minutes. 2. Move the vehicle to a cool place. NOTE: Cool the vehicle in an environment of ambient air temperature between −10°C (14°F) and 35°C (95°F). 3. Turn ignition switch OFF and soak the vehicle for 12 hours. CAUTION: Never turn ignition switch ON during soaking. NOTE: The vehicle must be cooled with the food open. 4. Start engine and let it idle for 5 minutes or more. CAUTION: Never turn ignition switch OFF during idling. DTC No. Trouble diagnosis (Trouble diagnosis content) DTC detecting condition Possible cause P0111 IAT SENSOR 1 B1 The comparison result of signals transmitted • Harness or connectors (High or low resistance in the IAT sen- • IAT sensor |