Honda Element. Manual — part 662

YES -Go to step 26.

NO -Repair open in the wire between the ECM/PCM (A23) and ECT sensor 1, then go to step 20.

17. Measure voltage between ECM/PCM connector terminal B8 and body ground.

Fig. 31: Measuring Voltage Between ECM/PCM Connector Terminal B8 And Body Ground
Courtesy of AMERICAN HONDA MOTOR CO., INC.

Is there about 5 V?

YES -Repair open in the wire between the ECM/PCM (B8) and ECT sensor 1, then go to step 20.

NO -Go to step 25.

18. Turn the ignition switch OFF.

19. Replace ECT sensor 1 (see ECT SENSOR 1 REPLACEMENT ).

20. Reconnect all connectors.

21. Turn the ignition switch ON (II).

22. Reset the ECM/PCM with the HDS.

23. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

24. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0118 indicated?

YES -Check for poor connections or loose terminals at ECT sensor 1 and the ECM/PCM, then go to step
1.

NO -Troubleshooting is complete. If any other Temporary DTCs or DTCs are indicated, go to the
INDICATED DTCS TROUBLESHOOTING.

25. Turn the ignition switch OFF.

26. Reconnect all connectors.

27. Update the ECM/PCM if it does not have the latest software (see UPDATING THE ECM/PCM ), or

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element

substitute a known-good ECM/PCM (see SUBSTITUTING THE ECM/PCM ).

28. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0118 indicated?

YES -Check for poor connections or loose terminals at ECT sensor 1 and the ECM/PCM. If the
ECM/PCM was updated, substitute a known-good ECM/PCM (see SUBSTITUTING THE
ECM/PCM ), then recheck. If the ECM/PCM was substituted, go to step 1.

NO -If the ECM/PCM was updated, troubleshooting is complete. If the ECM/PCM was substituted,
replace the original ECM/PCM (see ECM/PCM REPLACEMENT ). If any other Temporary DTCs or
DTCs are indicated, go to the INDICATED DTCS TROUBLESHOOTING.

DTC P0125: ECT SENSOR 1 MALFUNCTION/SLOW RESPONSE

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.

Is about 0°F (-18°C) or less, or 4.45 V or more indicated?

YES -Go to step 9.

NO -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 41°F (23°C) or more from the recorded temperature.

7. Note the value of ECT SENSOR 2 in the DATA LIST with the HDS.

8. Compare ECT SENSOR 2 and the recorded temperature.

Did ECT SENSOR 2 change 14°F (8°C) or more?

YES -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
ECT sensor 1, ECT sensor 2, and the ECM/PCM.

NO -Check the thermostat (see FAN MOTOR TEST ). If the thermostat is OK, go to step 9. If the
thermostat is faulty, replace it (see THERMOSTAT REPLACEMENT ), then go to step 11.

9. Turn the ignition switch OFF.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and
review the general troubleshooting information (see GENERAL
TROUBLESHOOTING INFORMATION ).

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element

10. Replace ECT sensor 1 (see ECT SENSOR 1 REPLACEMENT ).

11. Turn the ignition switch ON (II).

12. Reset the ECM/PCM with the HDS.

13. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

14. Allow the engine to cool to ambient temperature.

15. Start the engine, and let it idle for 20 minutes.

16. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0125 indicated?

YES -Check for poor connections or loose terminals at ECT sensor 1, ECT sensor 2, and the ECM/PCM,
then go to step 1.

NO -Go to step 17.

17. Monitor the OBD STATUS for DTC P0125 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 16, go
to the INDICATED DTCS TROUBLESHOOTING.

NO -If the screen indicates FAILED, check for poor connections or loose terminals at ECT sensor 1, ECT
sensor 2, and the ECM/PCM, then go to step 1. If the screen indicates NOT COMPLETED, go to step 14.

DTC P0128: COOLING SYSTEM MALFUNCTION

1. Turn the ignition switch ON (II).

2. Clear the DTC with the HDS.

3. Turn the blower switch OFF.

4. Check the FAN CTRL in the DATA LIST with the HDS.

Is it OFF?

YES -Go to step 5.

NO -Wait until the FAN CTRL is off, then go to step 5.

5. Check the radiator fan operation.

NOTE:

Before you troubleshoot, record all freeze data and any on-board snapshot, and
review the general troubleshooting information (see GENERAL
TROUBLESHOOTING INFORMATION ).

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element

Does the radiator fan keep running?

YES -Check the radiator fan circuit (see RADIATOR FAN CIRCUIT TROUBLESHOOTING ), and
the radiator fan relay (see POWER RELAY TEST ). If the circuits and the relay is OK, go to step 19.

NO -Go to step 6.

6. Let the engine cool until the coolant temperature is 104°F (40°C) or less.

7. Note the value of ECT SENSOR 1 and ECT SENSOR 2 in the DATA LIST with the HDS.

8. Start the engine, and let it idle.

9. Let the engine idle until ECT SENSOR 1 goes up 41°F (23°C) or more from the recorded temperature.

10. Check ECT SENSOR 2 in the DATA LIST with the HDS.

11. Compare the recorded value of ECT SENSOR 2 and the present value of ECT SENSOR 2.

Did temperature rise 14°F (8°C) or more?

YES -Intermittent failure, the system is OK at this time. Check for poor connections or loose terminals at
ECT sensor 1, ECT sensor 2, and the ECM/PCM.

NO -Test the thermostat (see FAN MOTOR TEST ), then go to step 12.

12. Turn the ignition switch ON (II).

13. Reset the ECM/PCM with the HDS.

14. Let the engine cool until the coolant temperature is between 21°F (-6°C) and 104°F (40°C).

15. Do the ECM/PCM idle learn procedure (see ECM/PCM IDLE LEARN PROCEDURE ).

16. Test-drive at a steady speed between 15-75 mph (24-120 km/h) for 10 minutes.

17. Check for Temporary DTCs or DTCs with the HDS.

Is DTC P0128 indicated?

YES -Check the cooling system, then go to step 1.

NO -Go to step 18.

18. Monitor the OBD STATUS for DTC P0128 in the DTCs MENU with the HDS.

Does the screen indicate PASSED?

YES -Troubleshooting is complete. If any other Temporary DTCs or DTCs were indicated in step 17, go
to the INDICATED DTCS TROUBLESHOOTING.

NO -If the screen indicates FAILED, check the cooling system, then go to step 1. If the screen indicates
NOT COMPLETED, go to step 14.

2007 Honda Element EX

2007-2008 ENGINE PERFORMANCE PGM-FI System - Element