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− SJC8A00K77100090125FAAT30 − − − − − − − − DTC P0125: YES NO YES NO YES NO YES NO 11-76 PGM-FI System DTC Troubleshooting (cont’d) ECT Sensor 1 Malfunction/Slow Response NOTE: Before you troubleshoot, record all freeze data 1. Start the engine, and let it idle for 5 minutes or more. 2. Check ECT SENSOR 1 in the DATA LIST with the HDS. Go to step 9. Go to step 3. 3. Allow the engine to cool to 104 °F (40 °C) or less. 4. Note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS. 5. Start the engine, and let it idle. 6. Let the engine idle until ECT SENSOR 1 goes up 49 °F (27 °C) or more from the recorded 7. Note the value of ECT SENSOR 2 in the DATA LIST with the HDS. 8. Compare ECT SENSOR 2 and the recorded temperature. Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals Test the thermostat (see page 10-4). If the thermostat is OK, go to step 9. If you replaced the 9. Turn the ignition switch OFF. 10. Replace ECT sensor 1 (see page 11-201). 11. Turn the ignition switch ON (II). 12. Reset the PCM with the HDS. 13. Do the PCM idle learn procedure (see page 11-273). 14. Allow the engine to cool to the ambient temperature. 15. Start the engine, and let it idle 20 minutes. 16. Check for Temporary DTCs or DTCs with the HDS. Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the Go to step 17. 17. Monitor the OBD STATUS for DTC P0125 in the DTCs MENU with the HDS. Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 16, If the screen indicates FAILED, check for poor connections or loose terminals at ECT sensor 1, Is about 10 °F ( 12 °C) or less, or 4.45 V or mor e indicated? Did ECT SENSOR 2 change 17 °F ( 9.5 °C) or Is DT C P0125 indicated? Does the scr een indicate PASSED? |