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SJC8A00K77100090111FAAT00 − − − − − − − − DTC P0111: YES NO YES NO YES NO YES NO 11-64 PGM-FI System DTC Troubleshooting (cont’d) IAT Sensor Circuit Range/ Performance Problem NOTE: Before you troubleshoot, record all freeze data 1. Check for poor connections or loose terminals at ECT sensor 1 and the IAT sensor. Go to step 2. Repair the connections or terminals, then go to step 15. 2. Remove the IAT sensor (see page 11-202). 3. Allow the IAT sensor to cool to ambient temperature. 4. Note the ambient temperature. 5. Connect the IAT sensor to its 2P connector, but do not install it on the intake manifold. 6. Turn the ignition switch ON (II). 7. Note the value of the IAT SENSOR quickly in the DATA LIST with the HDS. 8. Compare the value of the IAT SENSOR to the ambient temperature. Go to step 13. Go to step 9. 9. Disconnect the IAT sensor from the 2P connector. 10. Using a heat gun, blow hot air on the IAT sensor for a few seconds. Do not apply the heat longer than a 11. Connect the IAT sensor to its 2P connector, but do not install it on the intake manifold. 12. Check the IAT SENSOR in the DATA LIST with the HDS. Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals Go to step 13. 13. Turn the ignition switch OFF. 14. Replace the IAT sensor (see page 11-202). 15. Turn the ignition switch ON (II). 16. Reset the PCM with the HDS. 17. Do the PCM idle learn procedure (see page 11-273). 18. Check for Temporary DTCs or DTCs with the HDS. Check for poor connections or loose terminals at the IAT sensor and the PCM, then go to Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the Ar e the connections and ter minals OK ? Does the value of the IAT SENSOR dif f er 5.4 °F Does the IAT SENSOR change 58 °F ( 32 °C) or Is DT C P0111 indicated? |